INSITUFORM TECHNOLOGIES INC
10-K, 1998-03-30
WATER, SEWER, PIPELINE, COMM & POWER LINE CONSTRUCTION
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                          UNITED STATES
               SECURITIES AND EXCHANGE COMMISSION
                     Washington, D.C. 20549

                            FORM 10-K
(Mark One)
[ X ]         ANNUAL REPORT PURSUANT TO SECTION 13 
         OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

          For the fiscal year ended December 31, 1997
                                
                               OR

[   ]        TRANSITION REPORT PURSUANT TO SECTION 
       13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

     For the transition period from ---------- to ----------

                Commission file number 0-10786 

                  INSITUFORM TECHNOLOGIES, INC.
    --------------------------------------------------------
     (Exact name of registrant as specified in its charter)

         Delaware                               13-3032158      
- -------------------------------               ------------------
(State or other jurisdiction of               (I.R.S. Employer
incorporation or organization)                Identification No.)

   702 Spirit 40 Park Drive
   Chesterfield, Missouri                          63005
- ----------------------------------------          ------------
(Address of principal executive offices)          (Zip Code)

Registrant's telephone number, including area code:  314-530-8000
                                                    ------------
Securities registered pursuant to Section 12(b) of the Act:  None
                                                            ----
Securities registered pursuant to Section 12(g) of the Act:


              Class A Common Stock, $.01 par value
              ------------------------------------
                        (Title of class)


     Indicate by a check mark whether the registrant (1) has filed
all reports required to be filed by Section 13 or 15(d) of the
Securities Exchange Act of 1934 during the preceding 12 months (or
for such shorter period as the registrant was required to file
such reports), and (2) has been subject to such filing
requirements for the past 90 days.

                       Yes [ X ]           No [    ]<PAGE>
<PAGE>
          Indicate by check mark if disclosure of delinquent
filers pursuant to Item 405 of Regulation S-K (Section 229.405 of
this chapter) is not contained herein, and will not be contained,
to the best of registrant's knowledge, in definitive proxy or
information state-ments incorporated by reference in Part III of
this Form 10-K or any amendment to this Form 10-K. [  ]

          State the aggregate market value of the voting and non-
voting stock held by non-affiliates of the registrant. The
aggregate market value shall be computed by reference to the price
at which the common stock was sold, or the average bid and asked
prices of such common equity, as of a specified date within 60
days prior to the date of filing.

Aggregate market value as of March 15, 1998.....$228,062,297

          Indicate the number of shares outstanding of each of the
registrant's classes of common stock as of the latest practicable
date.

          Class A Common Stock, $.01 par value,
           as of March 15, 1998................. 26,959,459 shares



               DOCUMENTS INCORPORATED BY REFERENCE

List hereunder the documents, all or portions of which are
incorporated by reference herein, and the part of the Form 10-K
into which the document is incorporated: Proxy Statement to be
filed with respect to the 1998 Annual Meeting of Stockholders-Part
III.

<PAGE>
<PAGE>
                             PART I
ITEM 1. BUSINESS

General

     Insituform Technologies, Inc. (the "Company") is a worldwide
provider of proprietary trenchless technologies for the
rehabilitation and improvement of sewer, water, gas and industrial
pipes. The Company's primary technology is the Insituform(R)
Process (the "Insituform Process"), a "cured-in-place,"
non-disruptive pipeline rehabilitation process that, during the
Company's most recent fiscal year, contributed approximately 63%
of the Company's revenues.  

     In addition to the Insituform Process, the Company offers
certain other products in trenchless pipeline system
rehabilitation. The Company's NuPipe(R) Process (the "NuPipe
Process"), which utilizes a "fold and formed" technology, is used
primarily to repair smaller or less damaged pipe. The Company also
exercises the exclusive rights in substantially all of North
America, and non-exclusive rights in specified other territories,
to the Paltem(R)-HL system and to the Thermopipe(TM) System (the
"Thermopipe Process"). 

     The Company's Tite Liner(R) Process (the "Tite Liner
Process") is used to line new and existing steel pipelines.
Through its Affholder, Inc. subsidiary, the Company is engaged in
trenchless tunnelling used in the installation of new underground
pipelines. 

     The Company was incorporated in Delaware in 1980 under the
name Insituform of North America, Inc., in order to act as the
exclusive licensee of the Insituform Process in most of the United
States of Insituform Group Limited, the then owner of the
worldwide rights to the Insituform Process, and to license other
companies to market and provide Insituform installation services
in return for royalties and sales from materials manufactured by
the Company. Contemporaneously with the consummation in 1992 of
the Company's acquisition of IGL, the name of the Company was
changed to Insituform Technologies, Inc.

     As a result of its successive licensee acquisitions, the
Company has further integrated its business to perform the entire
process of manufacture and installation using its trenchless
processes. In 1995, Insituform Mid-America, Inc. ("IMA") which,
together with its subsidiaries, was licensed to provide the
Insituform technology in all or a portion of 22 states, was merged
with a subsidiary of the Company as a result of which IMA became
a wholly-owned subsidiary of the Company (the "IMA Merger"). The
IMA Merger has been accounted for as a pooling-of-interests and,
accordingly, the consolidated financial statements for the three<PAGE>
<PAGE>
years ended December 31, 1997 included in response to "Item 14.
Exhibits, Financial Statement Schedules, and Reports on Form 8-K"
for the periods prior to the IMA Merger, and (unless the context
otherwise requires) all other financial information included
herein for such periods and prior periods, include the combined
historical results of the Company and IMA. 

     As used in this Annual Report on Form 10-K, the term the
"Company" refers to the Company and, unless the context otherwise
requires, its direct and indirect subsidiaries. For certain
information concerning each of the Company's industry segments and
domestic and foreign operations, see Note 18 of the Notes to the
Company's Consolidated Financial Statements included in response
to "Item 14. Exhibits, Financial Statement Schedules, and Reports
on Form 8-K," which information is incorporated herein by
reference. 

     This Annual Report on Form 10-K contains various forward
looking statements and information that are based on information
currently available to management and management's beliefs and
assumptions. When used in this document, the words "anticipate,"
"estimate," "believes," "plans," and similar expressions are
intended to identify forward-looking statements, but are not the
exclusive means of identifying such statements. Such statements
are subject to risks and uncertainties, and the Company's actual
results may vary materially from those anticipated, estimated or
projected due to a number of factors, including, without
limitation, the competitive environment for the Company's products
and services, the geographical distribution and mix of the
Company's work, and other factors set forth in reports and other
documents filed by the Company with the Securities and Exchange
Commission from time to time.

Technologies

     Pipeline System Rehabilitation. The Insituform Process for
the rehabilitation of sewers, pipelines and other conduits
utilizes a custom-manufactured tube, or liner, made of a synthetic
fiber with a plastic coating on one side which, after
installation, becomes the new inside surface of the pipe being
rehabilitated. After the pipe is saturated (impregnated) with a
thermosetting resin, the liner is inverted into the host pipe by
various processes, and the resin is then heated by various means
until it hardens, or cures, forming a new hard pipe within a pipe.

     The Company's NuPipe Process entails the manufacture of a
folded replacement pipe from a thermoplastic material which is
stored on a reel in a reduced shape. The pipe is heated at the
installation site in order to make it flexible enough to be
inserted into an existing conduit, pulled into place and then
sequentially expanded to match the existing conduit by internal<PAGE>
<PAGE>
heat and pressure and progressive rounding, creating a tight fit
against the conduit being repaired.

      See "Patents and Licenses" below for information concerning
the Paltem system and the Thermopipe Process, both licensed by the
Company, neither of which were material to the Company's results
of operations during the year ended December 31, 1997.

     Corrosion and Abrasion Protection.  The Company's Tite Liner
Process is a method of lining new and existing steel pipelines
with a corrosion and abrasion resistant polyethylene pipe.

     Tunnelling.  Tunnelling is a trenchless, subterranean
construction process that generally is utilized for the
construction of pipeline systems. The Company utilizes its
tunnelling machines to construct new pipes from two to fourteen-
foot diameter in size.

Rehabilitation Activities

     The Company conducts its rehabilitation activities through
direct installation and other construction operations performed
through wholly-owned and, in some cases, majority-owned
subsidiaries. During the year ended December 31, 1997, such
operations accounted for approximately 92% of the Company's
consolidated revenues. In addition, in those areas of the world in
which the Company's management believes it would not be profitable
for the Company to exploit its trenchless processes directly, the
Company has granted licenses to unaffiliated companies. The
Company has also entered into joint ventures from time to time to
encourage additional royalties, sales of its products and
exploitation of its trenchless rehabilitation processes.

     Direct Installation and Other Construction Activities.  The
Company's direct installation operations are conducted in North
America principally through subsidiaries which hold the Insituform
Process and NuPipe Process licenses for 39 of the 50 states (and
a portion of another state), in addition to Puerto Rico and the
U.S. Virgin Islands, and all of Canada, and the rights in
substantially all of North America to the Paltem system and to the
Thermopipe Process. Outside of North America, the Company conducts
Insituform Process or NuPipe Process direct installation
operations through its subsidiaries in the United Kingdom and
France.

     North American rehabilitation operations are headquartered in
Chesterfield, Missouri, with principal operations facilities
maintained in approximately thirteen locations geographically
dispersed through all major regions. European operations are
headquartered in La Courneuve, France, with regional operations
facilities located in the United Kingdom. <PAGE>
<PAGE>
     The worldwide rights to the Tite Liner Process are applied by
United Pipeline Systems USA, Inc. and, through its United Pipeline
division, Insituform Technologies Limited, both subsidiaries of
the Company. During 1994, Tite Liner operations commenced in Chile
through a newly-organized subsidiary, United Sistema de Tuberias
Ltda. ("United Chile"), and during 1996, through newly organized
subsidiaries in Argentina and Mexico. The Company's corrosion and
abrasion protection work is coordinated through facilities in
Durango, Colorado, with regional facilities located in Canada and
Latin America. Following consummation of the IMA Merger, and in
view of the start-up nature of operations conducted by the Company
under the UltraPipe(R) name, the Company has consolidated such
operations with IMA's larger corrosion and abrasion protection
activities. 

     The Company's Affholder, Inc. subsidiary, in addition to
tunnelling, offers a range of pipe rehabilitation and construction
services. 

     The direct installation business of the Company is
project-oriented, and contracts may be obtained through
competitive bidding, usually requiring performance at a fixed
price. The profitability of these operations to the Company
depends upon the ability to estimate costs accurately, and such
estimates may prove to be inaccurate as a result of unforeseen
conditions or events. A substantial proportion of the work on any
given project may be subcontracted out to third parties by the
Company. 

     Proper trenchless installation requires certain expertise
that is acquired on the job and through training, and, if an
installation is improperly performed, the Company may be required
to repair the defect, which may involve excavation. The Company,
accordingly, has incurred significant costs in establishing new
field installation crews, in training new operations personnel and
in equipping its direct installation staff. The Company generally
invoices installation revenues on a percentage-of-completion
basis. Under ordinary circumstances, collection from governmental
agencies in the United States is made within 60 to 90 days of
billing. In some cases, five to fifteen percent of the contract
value is withheld by the owner until testing is completed or the
warranty period has expired.

     The Company is required to carry insurance and bonding in
connection with certain direct installation projects, and,
accordingly, maintains comprehensive insurance policies, including
workers' compensation, general and automobile liability, and
property coverage. The Company believes that it presently
maintains adequate insurance coverage for all direct installation
activities. The Company has also arranged bonding capacity for
bid, performance and payment bonds. Typically, the cost of a<PAGE>
<PAGE>
performance bond is less than approximately 1% of the contract
value. The Company is required to indemnify surety companies for
any payments the sureties are required to make under the bonds. 

     The Company's principal direct installation and other
construction activities are conducted by direct or indirect
wholly-owned subsidiaries, except for the following subsidiaries
that are less than wholly-owned:
<TABLE>
<CAPTION>
     Subsidiary         Processes    Territory     Interest
     ----------         ---------    ---------     --------
     <S>                <C>          <C>           <C>
     Insituform France  Insituform   France        66-2/3% of
      S.A.                                          stock(2)

     United Pipeline    Tite Liner   Mexico(1)     55% of
      de Mexico, S.A.                              stock(3)

_______________________

(1)  Jurisdiction of incorporation.

(2)  The remaining interest is held by a subsidiary of Lyonnaise des Eaux S.A.

(3)  The remaining interest is held by a subsidiary of Produtos y Servicios
     Miller de Mexico, S.A.
</TABLE>

     In March 1998, the Company completed the acquisition of the
entire minority interest in United Chile for an aggregate purchase
price of approximately $2.1 million. See "Item 7. Management's
Discussion and Analysis of Financial Condition and Results of
Operations-Liquidity and Capital Resources."

     Licensing Operations.  The Company grants licenses for the
Insituform Process and the NuPipe Process, covering exclusive and
non-exclusive territories, to licensees who provide  pipeline
repair and rehabilitation services throughout their respective
licensed territories. The licenses generally grant to the licensee
the right to utilize the know-how and practice the invention of
the patent rights (where they exist) relating to the subject
process, and to use the Company's copyrights and trademarks. At
present, the Insituform Process is commercialized under license by
an aggregate of 35 unaffiliated licensees and sublicensees, and
the NuPipe Process is commercialized under license by an aggregate
of seven unaffiliated licensees. 

     The Company's licensees generally are obligated to pay a
royalty at a specified rate, which in many cases is subject to a
minimum royalty payment. Domestic licensees are also obligated to
pay specified royalty surcharges on their sales and contracts
outside of their licensed territories, which are then paid by the<PAGE>
<PAGE>
Company to the domestic licensee in whose territory the
installation was performed.  Any improvements or modifications a
licensee may make in the subject process during the term of the
license agreement becomes the property of the Company or are
licensed to the Company. Should a licensee fail to meet its
royalty obligations or other material obligations, the Company may
terminate the license. Many licensees (including the domestic
licensees), upon prior notice to the Company, may also terminate
the license for any reason. The Company may vary the agreement
used with new licensees  according to prevailing conditions. 

     The Company has also granted an exclusive license to use the
Tite Liner Process for specified uses in much of the Middle East,
in exchange for royalty payments calculated on the basis of the
licensee's gross sales (subject to minimum payments).

     Ownership Interests in Licensees.  The Company, through two
subsidiaries, holds an aggregate of 57.5% of the partnership
interest in Midsouth Partners, the Company's licensee of the
Insituform and NuPipe Processes in Tennessee and portions of
Mississippi and Kentucky,with the remaining interest in Midsouth
Partners  held by a subsidiary of  Insituform East, Incorporated
("Insituform East"), an unaffiliated licensee. The management and
conduct of the business of Midsouth Partners is vested in a
management committee comprised of seven members. Notwithstanding
the Company's majority equity ownership interest in Midsouth
Partners, as a result of the determination in June 1996 by an
arbitration panel that one Company subsidiary was in default of
certain obligations under the partnership agreement, Insituform
East was awarded majority control of the management committee and
effectively determines the partnership's business strategy and its
implementation. Partnership interests in Midsouth Partners may not
be transferred nor may there be a change in control of any
partner, without the approval of all partners. 

     The Company, through its subsidiary, Insituform Holdings (UK)
Limited, holds one-half of the equity interest in Insituform
Rohrsanierungstechniken GmbH, the Company's licensee of the
Insituform and NuPipe Processes in Germany. The joint venture
partners have rights-of-first-refusal in the event either party
determines to divest its interest. 

     The Company holds additional ownership interests in licensees
as follows: 
<PAGE>
<PAGE>
<TABLE>
<CAPTION>
Licensee               Processes    Territory           Interest
- --------               ---------    ---------           --------
<S>                    <C>          <C>                 <C>
N.V. Kumpen-Insituform Insituform   Belgium,            50% joint venture
                                    Luxembourg          interest(1)

Ka-Te Insituform A.G.  Insituform   Switzerland,        50% joint venture
                                    Liechtenstein and   interest(2)
                                    Voralberg, Austria
_____________________
(1) The remaining interest is held by N.V. Kumpen.
(2) The remaining interest is held by Ka-Te Holding A.G.
</TABLE>

    The Company has also entered into contractual joint ventures
in order to develop joint bids on contracts for its direct
installation business, and for tunnelling operations. The Company
continues to investigate opportunities for augmenting its business
through such arrangements.

Marketing

    The Company has focused the marketing of its rehabilitation
technologies primarily on the municipal wastewater markets
worldwide, which the Company expects to remain the largest part of
its business for the foreseeable future. The Company produces
sales literature and presentations, participates in trade shows,
conducts national advertising and executes other marketing
programs for the Company's own sales force and those of
unaffiliated licensees.

    As a result of its acquisitions, the Company's distribution
efforts are implemented predominantly through the direct
installation activities of its subsidiaries. See "Rehabilitation
Activities" above for a description of the Company's licensing
operations and investments in licensees. The Company's
unaffiliated licensees are responsible for marketing and sales
activities in their respective territories, and each has a staff
for that purpose.

    The Company offers its corrosion and abrasion protection
technologies worldwide to line new and existing steel pipelines.

    No customer accounted for more than ten percent of the
Company's consolidated revenues during the years ended December
31, 1997, 1996 and 1995, respectively.

<PAGE>
<PAGE>
Backlog

    At December 31, 1997 and 1996, respectively, the Company
recorded backlog from construction operations (excluding projects
where the Company has been advised that it is the low bidder) in
the amounts of approximately $102.1 million and $167.6 million,
respectively. The Company anticipates that substantially all
construction backlog recorded at December 31, 1997 will be
completed in 1998.

Product Development

    The Company, by utilizing its own laboratories and test
facilities and outside consulting organizations and academic
institutions, continues to develop improvements to its proprietary
processes, including the materials used and the methods of
manufacturing and installing pipe. See "Item 2. Properties" and
"Item 7. Management's Discussion and Analysis of Financial
Condition and Results of Operations-Liquidity and Capital
Resources" for information concerning inauguration of the
Company's new research and development facility in Chesterfield,
Missouri. During the years ended December 31, 1997, 1996 and 1995,
the Company spent approximately $7.0 million, $7.7 million and
$7.6 million, respectively, on all strategic marketing and product
development activities. 

Manufacturing and Suppliers

    The Company maintains its principal North American liner
manufacturing facility in Batesville, Mississippi, with an
additional facility located in Memphis, Tennessee. In Europe,
Insituform Linings Plc ("Linings"), a joint venture between the
Company and five licensees, manufactures and sells linings from
its plant located in Wellingborough, United Kingdom. The Company,
through a subsidiary, owns 51% of the equity of Linings. In 1992,
the Company inaugurated its liner manufacturing facility in
Matsubuse, Japan. 

     While raw materials used in the Company's Insituform products
are typically available from multiple sources, the Company's
historical practice has been to purchase materials from a limited
number of suppliers. The Company maintains its own felt
manufacturing facility contiguous to its Insitutube manufacturing
facility in Batesville, and purchases substantially all of its
fiber requirements from one source, alternate vendors of which the
Company believes are readily available. Although it is working
with one vendor to develop a uniform and standard resin to source
substantially all of its resin requirements, the Company believes
that resins are also readily available from a number of major
corporations. The Company believes that the sources of supply in<PAGE>
<PAGE>
connection with its Insituform operations are adequate for its
needs.

    The Company has entered into a supply agreement with an
unaffiliated party, under which the Company will purchase the
thermoplastic pipe to satisfy the substantial portion of its
NuPipe requirements, subject to automatic annual renewal periods
and to minimum purchases by the Company. The Company believes that
alternative sources of supply for its pipe requirements in
connection with the NuPipe Process are available. If the Company
were unable to obtain its NuPipe requirements under its existing
third party arrangements, the Company might be adversely affected
until arrangements with alternative sources are formulated.

    The Company sells liners and related products utilized in the
Insituform Process, and the thermoplastic pipe utilized in the
application of the NuPipe Process, to its licensees, in the case
of domestic licenses pursuant to fixed-term supply contracts. 

    The Company manufactures certain equipment used in its
corrosion and abrasion protection operations, and, in connection
with any licenses to unaffiliated parties, will sell such
equipment to its licensees. 

Patents and Licenses

    The Company currently holds 64 patents in the United States
relating to the Insituform Process, the last to expire of which
will remain in effect until 2015, and has obtained patent
protection in its principal overseas markets covering aspects of
the Insituform Process. These patents cover certain aspects of the
Insituform Process including the manufacture of liners, the resin
saturation process and the process of reconstructing the pipeline.
Two of the significant patents relating to the Insituform Process,
covering, respectively, the curing of a resin-impregnated tube and
material aspects of the inversion process, have expired where
previously in effect. 

    The specifications and/or rights granted in relation to each
patent will vary from jurisdiction to jurisdiction. In addition,
as a result of differences in the nature of the work performed and
in the climate of the countries in which the work is carried out,
not every licensee uses each patent, and the Company does not
necessarily seek patent protection for all of its inventions in
every jurisdiction in which it does business. 

    Although the Company believes these patents are important to
the business of the Company, there can be no assurance that the
validity of the patents will not be successfully challenged or
that they are sufficient to afford protection against another
company utilizing a process similar to the Insituform Process. The<PAGE>
<PAGE>
Company's business could be adversely affected by increased
competition in the event that one or more of the patents were
adjudicated to be invalid or inadequate in scope to protect the
Company's operations or upon expiration of the patents. The
Company believes, however, that while the Company has relied on
the strength and validity of its patents, the Company's long
experience with the Insituform Process, its continued commitment
to support and develop the Insituform Process, the strength of its
trademarks, and its degree of market penetration, should enable
the Company to continue to compete effectively in the pipeline
rehabilitation market. 

    Ten patents covering the NuPipe Process or the materials used
in connection with the NuPipe Process have been issued in the
United States. The Company holds patents in connection with the
NuPipe Process in 21 other countries.

    The Company believes that the success of its corrosion and
abrasion protection operations will depend primarily upon its
proprietary know-how and its marketing and sales skills. 

    Pursuant to a license from Ashimori Industry Co., Ltd.
("Ashimori"), the Company holds the exclusive rights to use the
patents, trademarks and know-how related to the Paltem-HL system,
a process for rehabilitating pressure pipes, and certain other
products which are in various stages of development, for
substantially all of North America. In March 1998, the license was
amended to extend to additional non-exclusive territories in the
eastern hemisphere and Latin America. Ashimori is entitled to
receive ongoing royalties at specified rates on installations and
sales of liners. The license extends for an initial term through
2009 and automatically is renewed for successive one-year terms
unless the Company gives notice of non-renewal at least 90 days
prior to the end of a term. In the event annual minimum royalties
are not met, Ashimori has the right to render the agreement non-
exclusive and, in the event minimum royalties are not met for two
consecutive years, to terminate the agreement. 

    Under a license from Angus Fire Armour Limited ("Angus"), the
Company holds exclusive rights for the United States and Canada,
and non-exclusive rights in Mexico and certain territories in the
eastern hemisphere, to use the patents, trademarks and know-how
related to the Thermopipe Process, which the Company intends to
introduce for rehabilitating potable water and other aqueous fluid
pipes. Angus has the option under the license to convert the
exclusive rights to non-exclusive rights in those territories
where the Company does not meet certain minimum purchases of
Thermopipe liner. The license extends for an initial term of five
years and is renewable by the Company for an additional five year
term, subject to termination in the event of specified defaults.<PAGE>
<PAGE>
After payment of an initial license fee, no further royalties are
due under the license. 

Competition

    The pipeline reconstruction, rehabilitation and repair
business is highly competitive, and the Company competes against
many companies, some of which have far greater financial resources
and experience than the Company. Accordingly, there can be no
assurance as to the success of the Company's processes in
competition with such companies and alternative technologies for
pipeline rehabilitation. 

    In each of its rehabilitation markets, the Company currently
faces competition from more conventional methods, including: (i)
total replacement, which is the excavation and replacement of an
entire section of pipe; (ii) point repair, which is the
replacement of cracked or structurally failed sections of pipes by
actual excavation and replacement; (iii) sliplining, which is the
insertion of a smaller pipe within an existing deteriorated pipe;
and (iv) the placement of gelatinous material, hydraulic cement,
or other acceptable material in defective pipes to repair leaks
and prevent infiltration in gravity sewers. 

    In addition, the Company faces competition from other
trenchless processes throughout the world. In the United States,
the Company faces competition from several cured-in-place
processes and, outside of the United States, from additional
cured-in-place processes currently in regional use. The Company
also faces competition from several fold and formed thermoplastic
processes. Several companies offer in-place polyethylene lining
systems which compete with the Company's abrasion and corrosion
protection technologies. The Company's trenchless processes may
also encounter competition from alternative trenchless approaches
such as pipe bursting and other methods.

    The Company's tunnelling operation competes with utility
contracting firms throughout North America.

Seasonality

    Although the Company's operations can be affected by severe
weather, for the past five years seasonal variation in work
performed has not had a material effect on the Company's
consolidated results of operations.

Employees

    As of December 31, 1997, the Company employed 1,420
individuals. Certain of the Company's contracting operations are
parties to collective bargaining agreements covering an aggregate<PAGE>
<PAGE>
of 244 employees. The Company generally considers its relations
with its employees to be good. 

Government Regulation

    The Company and its licensees are required to comply with all
national, state and local statutes, regulations and ordinances,
including those disclosure and filing requirements relating to the
grant of licenses. In addition, the Company's direct installation
and other construction operations, and those of its licensees, may
have to comply with relevant code specifications, permit
requirements, and bonding and insurance requirements as well as
with fire regulations relating to the storage, handling and
transporting of flammable materials. The Company's manufacturing
facilities, as well as its direct installation operations and
those of its licensees, are subject to state and national
environmental protection regulations, none of which presently has
any material effect on the Company's capital expenditures,
earnings or competitive position in connection with the Company's
present business. However, while the Company's direct installation
operations have established monitoring programs relating to the
use of solvents, further restrictions could be imposed on the use
of solvents or the thermosetting resins used in the Insituform
Process. The Company believes that it is in material compliance
with environmental laws and regulations applicable to it.

    The use of both thermoplastics and thermosetting resin
materials in contact with drinking water is strictly regulated in
most countries. In the United States, a consortium led by NSF
International ("NSF"), under arrangements with the United States
Environmental Protection Agency (the "EPA"), establishes minimum
requirements for the control of potential human health effects
from substances added indirectly to water via contact with
treatment, storage, transmission and distribution system
components, by defining the maximum permissible concentration of
materials which may be leached from such components into drinking
water, and methods for testing them. In February 1996, the Paltem-
HL and Frepp processes under license from Ashimori were certified
by the NSF for use in drinking water systems, followed in April
1997 by certification by the NSF of the Insituform pressure pipe
liner for such use. The Thermopipe product also has NSF approval.
The NSF assumes no liability for use of any products, and the
NSF's arrangements with the EPA do not constitute the EPA's
endorsement of the NSF, the NSF's policies or its standards.
Because of the need for dedicated equipment in connection with use
of these products in drinking water applications, and the time
required for the marketing process, the Company does not expect
meaningful revenues from drinking water rehabilitation at least
through 1998.
<PAGE>
<PAGE>
Executive Officers

    The executive officers of the Company, and their respective
ages and positions with the Company, are as follows:
<TABLE>
<CAPTION>
                         Age at          Position with
     Name            March 15, 1998       the Company 
     ----            --------------      --------------
<S>                  <C>                 <C>
Anthony W. Hooper         50             Chairman of the Board,
                                          President and Chief
                                          Executive Officer

Jerome Kalishman          70             Vice Chairman of the
                                          Board

Robert W. Affholder       62             Senior Executive Vice 
                                          President

William A. Martin         56             Senior Vice
                                          President-Chief
                                          Financial Officer

Robert L. Kelley          52             Vice President-General
                                          Counsel
</TABLE>

    Anthony W. Hooper has been Chairman of the Board of the
Company since June 1997, and has been President of the Company
since November 1996. Mr. Hooper was previously, since August 1994,
Senior Vice President-Marketing and Technology of the Company,
having served as Senior Vice President-Marketing of the Company
from November 1993 to that date. From 1992 until joining the
Company, Mr. Hooper was President of Huyck Formex/Weavexx
Corporation, a North Carolina industrial textile and process
equipment manufacturer and subsidiary of BTR, Inc. 

    Jerome Kalishman has been Vice Chairman of the Board of the
Company since June 1997, and held such position from October 1995
until November 1996. Mr. Kalishman served as Chairman of the Board
of the Company from November 1996 until June 1997. Prior to the
IMA Merger and since prior to 1992, Mr. Kalishman was Chairman of
the Board and Chief Executive Officer of IMA.

    Robert W. Affholder has been Senior Executive Vice President
of the Company since August 1996. Mr. Affholder was previously,
since October 1995, Senior Vice President-Chief Operating Officer
of North American Contracting Operations of the Company. Mr.
Affholder was President of IMA from 1994 to October 1995 and from<PAGE>
<PAGE>
prior to 1992 to 1993, and was Vice Chairman of IMA from 1993 to
1995.

    William A. Martin has been Chief Financial Officer of the
Company since 1988, a Vice President from 1989 to January 1993 and
a Senior Vice President since January 1993. 

    Robert L. Kelley has been Vice President of the Company since
June 1996, having joined the Company as General Counsel in the
prior month. Mr. Kelley was Assistant General Counsel of Monsanto
Company from prior to 1992 until joining the Company.

ITEM 2. PROPERTIES

    The Company's executive offices, located in Chesterfield,
Missouri, a suburb of St. Louis, at 702 Spirit 40 Park Drive, are
leased from an unaffiliated party through May 31, 2002.

    The Company maintains a liner fabrication facility and
contiguous felt manufacturing facility in Batesville, Mississippi.
The industrial development bond used to finance such facilities
was prepaid in February 1997. The property remains leased to the
Company under arrangements that provide for the Company's purchase
option at (subsequent to such prepayment) nominal value. 

    The Company's manufacturing facilities in Memphis, Tennessee
are located on land sub-leased from an unaffiliated entity for an
initial term of forty years expiring on December 31, 2020. The
cost of the building, together with certain machinery and
equipment, was financed from the sale of a $1.5 million industrial
development bond and secured by a mortgage on the premises and
equipment. 

    Linings (a 51%-owned subsidiary) owns certain premises
comprising its liner manufacturing facility, located in
Wellingborough, England. The Company leases additional
manufacturing space in Matsubuse, Japan.

    In March 1998, the Company inaugurated a new research and
development facility owned by it and adjacent to its installation
operations in Chesterfield, comprising approximately 59,500 square
feet of space.

    In support of its direct installation operations, the Company
owns or leases facilities in the United States, Europe and Latin
America, the principal sites of which currently are in
Chesterfield, Missouri, Charlton, Massachusetts, Jacksonville,
Florida, Birmingham, Alabama, Hammond, Indiana, Lemont, Illinois,
Owosso, Michigan, Houston, Texas, Wichita, Kansas, Santa Fe
Springs, California, Salem, Oregon, Edmonton, Alberta, Surrey,
British Columbia, Ossett, United Kingdom, Antofagasta, Chile and<PAGE>
<PAGE>
Villahermosa, Mexico. The Ossett and Jacksonville properties are
subject to mortgages.

    The foregoing facilities are regarded by management as
adequate for the current and anticipated future requirements of
the Company's business. In order to rationalize the Company's
operations combined as a result of the IMA Merger, the Company may
seek to relocate certain operations.

ITEM 3. LEGAL PROCEEDINGS
    
    Cat Proceeding.  The Company, in 1990, initiated proceedings
against Cat Contracting, Inc., et. al. in the United States
District Court for the Southern District of Texas, Houston
Division (Civil Action No. H-90-1690)(the "Cat Proceeding"),
alleging infringement of certain of the Insituform patents in
connection with conduit relining work performed in Houston by
licensees of Kanal Sanierung Hans Muller GmbH & Co. In such
proceeding, defendants asserted counterclaims alleging that the
suit had been brought in bad faith, that the Company had engaged
in certain antitrust violations and further that the Company had
engaged in unfair competition.

    In 1991, the jury rendered its verdict finding that defendants
had infringed the Insituform patents at issue and that such
patents were not invalid. In response to defendants' request, the
court declined to declare such patents invalid and further
declined to disturb the jury's verdict rejecting defendant's
counterclaims that the suit had been brought in bad faith and
defendant's claims that plaintiffs had engaged in unfair
competition. The court did, however, grant the defendants' motion
for a new trial on the matter of whether defendants had infringed
certain of the Insituform patents under the doctrine of
equivalents, setting aside that portion of the jury's verdict; and
granted defendants judgment notwithstanding the jury verdict on
the issue of literal infringement of that patent.

    In October 1995, the court held the mandated new trial and
ruled that defendants' serial vacuum impregnation processes
infringed the Company's patent under the doctrine of equivalents.
The court further issued a permanent injunction against
defendants' use of the processes covered by such patent and
ordered a trial on the issue of damages, the amount of which had
yet to be determined. Defendants filed a notice of appeal to the
United States Court of Appeals for the Federal Circuit and the
Company filed a notice of cross-appeal from the 1991 judgment.

    In November 1996, the Court of Appeals for the Federal Circuit
affirmed the District Court in declining to declare the Company's
serial vacuum impregnation patent invalid and found that the
jury's rejection of defendants' challenge to the validity of that<PAGE>
<PAGE>
patent was supported by the evidence. The Court of Appeals further
affirmed the District Court's grant to defendants of judgment
notwithstanding the jury verdict on the issue of the literal
infringement of the patent, and vacated the District Court's
finding of infringement under the doctrine of equivalency, holding
that the District Court had used incorrect claim construction. The
Court of Appeals remanded the case to the District Court for new
findings on the infringement issue. In March 1997, defendants
sought a writ of certiorari from the U.S. Supreme Court to review
that ruling, which was denied by the Court.

    In December 1996, the District Court issued its new findings
under the guidelines suggested by the Court of Appeals and again
found that both of the processes employed by defendants infringed
the Company's serial vacuum impregnation patent. In January 1997
defendants appealed from those findings, as well as from the
refusal of the District Court to consider allegedly new evidence
on the issue of equivalency. That appeal has been fully briefed
and is awaiting argument. The District Court, as affirmed by the
Court of Appeals in May 1997, has denied defendants' February 1996
motion for a partial new trial, which alleged that the Company
gave false testimony at the 1991 trial and sought dismissal of the
action and monetary sanctions.

    The damages portion of the Cat Proceeding was tried before the
District Court in September 1997. The parties now await the
District's Court's decision as to the amount of damages due to the
Company as a result of defendant's infringement of the Company's
serial vacuum impregnation patent during the period of 1989-90
through October 1995.

    Additional Texas Proceeding.  In October 1996, two of the
defendants in the Cat Proceeding filed a separate action in the
District Court against the Company and Insituform East,
Incorporated (Inliner U.S.A. and Cat Contracting, Inc. v.
Insituform Technologies, Inc. and Insituform East, Inc. [Civil
Action No. H96-3627]) alleging, among other matters, that the
Company had commenced the Cat Proceeding with knowledge that the
Company's serial impregnation patent was invalid and gave false
testimony in the Cat Proceeding. The suit further alleges that the
Company committed various infractions of the antitrust laws,
including conduct by the Company constituting unreasonable
restraints of trade and monopolization of its market, in violation
of Sections 1 and 2 of the Sherman Act, made false or misleading
representations in violation of Sections 1 and 2 of the Sherman
Act, made false or misleading representations in violation of
Section 43(a) of the Lanham Act, and engaged in other anti-
competitive practices in violation of Texas state law, and seeks
compensatory and punitive damages. 

<PAGE>
<PAGE>
    The Company has denied the allegations, raised affirmative
defenses, and filed a motion to dismiss regarding certain of the
antitrust claims. In August 1997, the District Court issued its
Memorandum and Order in which it granted the Company's motion to
dismiss as to claims arising out of the Cat Proceeding, as well as
Noerr-Pennington immunity for the patent litigation in the Cat
Proceeding and the obtaining of certain product standards, among
other matters, and dismissed plaintiffs claims that the
acquisition by the Company of a number of its licensees
constituted anti-competitive practices. The court further ordered
plaintiffs to refile an amended complaint alleging with factual
particularity any timely claims for tortious interference with
business and contractual relations, as well as facts demonstrating
certain antitrust injury and Section 43(a) Lanham Act claims of
misrepresentation. Although the court denied the Company's motion
as to the antitrust claims of complimentary bidding, bid rigging,
and predatory pricing, the court ordered the plaintiffs to refile
an amended complaint alleging with factual particularity any
timely claims for tortious interference with business and
contractual relations, true "sham" efforts to manipulate
municipalities for exclusionary purposes, antitrust injury in
regard to acts of complementary bidding, bid rigging and predatory
price fixing, and Section 43(a) Lanham Act claim of
misrepresentation.

    Plaintiffs motion to file an amended complaint purporting to
add a subsidiary of the Company, Insituform Gulf South, Inc., as
a defendant has been denied by the court. In its third amended
complaint, plaintiffs allege that the Company committed various
violations of the antitrust laws, including conduct by the Company
constituting unreasonable restraints of trade and monopolization
of its market in violation of Sections 1 and 2 of the Sherman Act,
violations of Section 2 of the Clayton Act, made false or
misleading representations in violation of Section 43(a) of the
Lanham Act, tortious interference and business disparagement, and
seeks compensatory and punitive damages. No discovery has been
conducted to date. A scheduling order has been entered with trial
currently set for November 1998.

    Western Slopes Utilities.  In October 1996, Western Slope
Utilities, Inc., which utilizes a serial impregnation process
licensed from Inliner U.S.A., one of the defendants in the Cat
Proceeding, commenced an action against the Company in the United
States District Court for the District of Colorado (Western Slope
Utilities, Inc. v. Insituform Technologies, Inc. and Insituform
(Netherlands) B.V. [Civil Action No. 96-N-2394]), seeking, among
other things, a judgment declaring the Company's serial
impregnation patent invalid, unenforceable and not infringed by
plaintiff's current activities, and injunctive relief enjoining
the Company from charging plaintiff or any of its customers or
suppliers with infringing that patent. This case has been<PAGE>
<PAGE>
transferred to the United States District Court for the Southern
District of Texas, and plaintiff's application for writ of
mandamus with the United States Court of Appeals for the Federal
Circuit contesting the transfer order has been denied. In August
1997, the Company filed a motion to dismiss and, in the
alternative, a motion for summary judgment dismissing plaintiff's
declaratory judgment claims. Plaintiff has acquiesced in the
Company's motion to dismiss the declaratory judgment claims and
the court has consented and ordered those claims dismissed.
Accordingly, the only remaining issues in the suit entail claims
under Section 43(a) of the Lanham Act and tortious interference
with business relationships under state law.

    LaRoche Industries.  In February 1998, a settlement was
reached in LaRoche Industries, Inc. v. Affholder, Inc. (Civil
Action 96-3487(L)), pending in the United States District Court
for the Eastern District of Louisiana. Claims that Affholder, Inc.
and United Pipeline Systems USA, Inc., both subsidiaries of the
Company, had performed negligent rehabilitation work on and had
employed defective materials in repair of a brine line were
dismissed. The Company's payments to plaintiff under the
settlement had been fully reserved.

    Other.  The Company is involved in certain additional
litigation incidental to the conduct of its business and affairs.
Management does not believe that the outcome of any such
litigation will have a material adverse effect on the financial
condition or results of operations of the Company.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

    (a)  On October 8, 1997, the Company convened its Annual
Meeting of Stockholders (the "Annual Meeting").

    (b)  Not applicable because (i) proxies for the Annual Meeting
were solicited pursuant to Regulation 14A under the Securities
Exchange Act of 1934 together with the Company's Proxy Statement
dated August 25, 1997 (the "1997 Proxy Statement"); (ii) there was
no solicitation in opposition to management's nominees as listed
in the 1997 Proxy Statement and (iii) all of such nominees were
elected.

    (c)  At the Annual Meeting, the stockholders voted in favor of
a proposal to approve an amendment of the Certificate of
Incorporation of the Company to amend Article SIXTH in order to
eliminate the three-year staggered terms of the directors and to
provide for a new procedure to fill vacancies on the Board of
Directors. The holders of 21,618,768 shares voted in favor of, the
holders of 241,244 shares voted against, the holders of 104,923
shares abstained and there were 335,076 broker non-votes with
respect to approval of such proposal.<PAGE>
<PAGE>
     At the Annual Meeting, the stockholders voted in favor of a
proposal to approve an amendment to Article III, Section 2, of the
By-Laws of the Company in order to reduce the size of the Board of
Directors to eight, with an automatic adjustment to nine upon
appointment of an additional director. The holders of 21,640,228
shares voted in favor of, the holders of 335,611 shares voted
against, the holders of 104,483 shares abstained and there were
219,689 broker non-votes with respect to approval of such
proposal.

      At the Annual Meeting, the stockholders voted in favor of
management's nominees for election as directors of the Company.
The holders of 21,982,887 shares voted in favor of, and holders of
317,124 shares withheld their vote for, the election of Robert W.
Affholder; the holders of 22,000,949 shares voted in favor of, and
holders of 299,062 shares withheld their vote for, the election of
Paul A. Biddelman; the holders of 22,001,099 shares voted in favor
of, and holders of 298,912 shares withheld their vote for, the
election of Stephen P. Cortinovis; the holders of 21,996,324
shares voted in favor of, and holders of 303,687 shares withheld
their vote for, the election of Anthony W. Hooper; the holders of
21,993,723 shares voted in favor of, and holders of 306,288 shares
withheld their vote for, the election of Jerome Kalishman; the
holders of 21,999,245 shares voted in favor of, and holders of
300,766 shares withheld their vote for, the election of Silas
Spengler; the holders of 22,002,095 shares voted in favor of, and
holders of 297,916 shares withheld their vote for, the election of
Russell B. Wight, Jr.; and the holders of 22,001,749 shares voted
in favor of, and holders of 298,262 shares withheld their vote
for, the election of Sheldon Weinig.

    (d)  The terms of the Company's settlement agreement dated
July 25, 1997 with the Dissident Group (as defined therein) and
the additional incumbents on its Board of Directors are contained
under the caption "IV. Settlement Agreement" contained in the 1997
Proxy Statement, the pertinent information of which is
incorporated herein by reference.

                             PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY
        AND RELATED STOCKHOLDER MATTERS

    (a)   The Company's class A common stock, $.01 par value
("Common Stock"), is traded in the over-the-counter market under
the symbol "INSUA." The following table sets forth the range of
quarterly high and low sales prices commencing after December 31,
1995, as reported on The Nasdaq Stock Market. Quotations represent
prices between dealers and do not include retail mark-ups,
mark-downs or commissions.
<PAGE>
<PAGE>
<TABLE>
<CAPTION>
    Period                       High          Low
    ------                       ----          ---
   <S>                           <C>         <C>
   1997
        First Quarter            $ 7.88      $5.50
        Second Quarter             6.75       5.38
        Third Quarter              9.25       5.88
        Fourth Quarter            10.19       7.38

    Period                       High          Low
    ------                       ----          ---
   1996
        First Quarter            $12.00       $9.38
        Second Quarter            13.38        7.63
        Third Quarter              8.00        6.13
        Fourth Quarter             8.38        6.38

</TABLE>

        As of March 15, 1998, the number of record holders of the
Company's Common Stock was 1,703.

        Holders of Common Stock are entitled to receive dividends
as and when they may be declared by the Company's Board of
Directors. The Company has never paid a cash dividend on the
Common Stock. The Company's present policy is to retain earnings
to provide for the operation and expansion of its business.
However, the Company's Board of Directors will review the
Company's dividend policy from time to time and will consider the
Company's earnings, financial condition, cash flows, financing
agreements and other relevant factors in making determinations
regarding future dividends, if any. Under the terms of certain
debt arrangements to which the Company is a party, the Company is
subject to certain limitations in paying dividends. See Note 8 of
the Notes to the Company's Consolidated Financial Statements
included in response to "Item 14. Exhibits, Financial Statement
Schedules, and Reports on Form 8-K" and "Item 7. Management's
Discussion and Analysis of Financial Condition and Results of
Operations-Liquidity," which information is incorporated herein by
reference.

    (b) Not applicable.

ITEM 6. SELECTED FINANCIAL DATA

        The selected financial data set forth below have been
derived from the Company's consolidated financial statements
referred to under "Item 14. Exhibits, Financial Statement
Schedules, and Reports on Form 8-K" of this Annual Report on Form<PAGE>
<PAGE>
10-K, and previously published historical financial statements not
included in this Annual Report on Form 10-K. In October 1995, the
Company consummated the IMA Merger, which the Company has
accounted for as a pooling-of-interests and, accordingly, the
historical financial statements of the combining companies have
been retroactively combined (after adjustments to eliminate
intercompany balances and transactions, and to conform reporting
periods and accounting methods) as if the companies had operated
as a single entity for the periods presented. Certain historical
financial data of IMA have been reclassified to conform to the
Company's accounting policies. The selected financial data set
forth below should be read in connection with "Item 7.
Management's Discussion and Analysis of Financial Condition and
Results of Operations" and the Company's consolidated financial
statements, including the notes thereto, referred to herein.
<TABLE>
<CAPTION>
                                                      Unaudited
                                               Year Ended December 31,
                              -----------------------------------------------------
                              1997        1996       1995(1)     1994(2)      1993(3)
                              ----        -------     -------     -------      -------
                                   (in thousands, except per share amounts)
INCOME STATEMENT DATA:
<S>                          <C>          <C>           <C>         <C>         <C>
Revenues..................   $320,640     $289,933      $ 272,203   $ 223,171   $151,622
Operating income..........     25,030       14,346         11,750(4)   29,232     15,107
Income (loss) from
 continuing operations....      9,644        4,492           (966)(5)  15,667      9,734
Net income (loss).........      9,419        4,492           (966)     14,503      7,487
Basic and diluted earnings
 (loss) per share:
 Income (loss) from 
  continuing operations...        .36          .17           (.04)        .57        .36
Net income (loss).........        .35          .17           (.04)        .53(6)     .28(6)

BALANCE SHEET DATA:

Working capital...........    114,283       78,876         69,538      46,403     40,724
Current assets............    161,273      130,372        120,711     106,926     81,102
Property and equipment....     57,983       57,266         59,773      51,471     40,407
Total assets..............    297,852      265,502        260,300     227,627    177,010
Long-term debt............    111,440       82,384         82,813      47,347     36,297
Redeemable preferred
 stock....................       --           --             --          --          157
Total liabilities.........    162,705      136,664        137,845     110,310     77,108
Total common stock and
 other stockholders' 
 equity..................     131,502      123,203        116,810     114,880    100,106

___________________
(1)   In 1995, the Company consummated the acquisition of the pipeline rehabilitation
      business of Enviroq Corporation, which has been accounted for under the purchase
      method of accounting.

(2)   In 1994 the Company consummated the acquisition of Gelco Services, Inc. and
      affiliates, which has been accounted for under the purchase method of accounting.<PAGE>
<PAGE>
(3)   In 1993 the Company consummated the acquisitions of Naylor Industries, Inc. and
      Insituform Midwest, Inc., which have been accounted for under the purchase method of
      accounting.

(4)   Reflects $6.5 million in costs associated with the IMA Merger, which have been charged
      to operations primarily in the fourth quarter of 1995, and a pre-tax charge in the
      amount of $8.1 million for restructuring costs, primarily for consolidation of
      corrosion and abrasion protection operations, rationalization of Canadian operations
      to one facility, elimination of duplicative management positions, relocation of
      certain domestic employees and functions, and termination of construction of proposed
      manufacturing capacity.

(5)   In 1995 the Company settled certain outstanding litigation for a cash payment of $3.2
      million and issuance of 30,000 shares of its Common Stock, resulting in an after-tax
      charge against earnings of approximately $2.2 million.

(6)   In December 1993 the Company determined to discontinue the operations of its division
      engaged in the offsite rehabilitation of downhole tubulars for the oil and gas
      industry. As a result, the Company recorded a fourth quarter 1993 charge to write down
      the division's assets to their estimated net realizable values and to accrue for
      operating losses during the anticipated phase-out period. The statement of operations
      and balance sheets have been restated to reflect continuing operations. The Company
      also recorded a fourth quarter 1994 charge resulting from the abandonment of efforts
      to find a purchaser for, and shut down of, such division.

</TABLE>

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF
        FINANCIAL CONDITION AND RESULTS OF OPERATIONS

GENERAL

     The Company's rehabilitation revenues derive primarily from
direct installation and other contracting activities, generated by
the Company's subsidiaries operating in the United States, Canada,
France, the United Kingdom, Chile, Argentina and Mexico, and
include product sales to, and royalties and license fees paid by,
the Company's 35 unaffiliated Insituform licensees and sub-
licensees and its seven unaffiliated NuPipe licensees. During the
three years ended December 31, 1997, 1996 and 1995, approximately
62.5%, 69.7% and 71.2%, respectively, of the Company's
consolidated revenues related to the Insituform Process.

     The Company was incorporated in Delaware in 1980 in order to
act as the exclusive licensee of the Insituform Process in most of
the United States. In October 1995, the Company consummated the
IMA Merger, which has been accounted for as a pooling-of-
interests. Under the pooling-of-interests method of accounting,
the historical financial statements of the combining companies are
retroactively combined (after adjustments to eliminate
intercompany balances and transactions, and to conform accounting
methods) as if the companies had operated as a single entity. The
Company's acquisition in April 1995 of the pipeline rehabilitation
business of Enviroq Corporation (the "Enviroq Acquisition"), and<PAGE>
<PAGE>
its November 1995 acquisition of the FormaPipe division of
Waterflow Services Limited, have been accounted for under the
purchase method of accounting, so that the results of the acquired
companies are included in the Company's historical results of
operations from the consummation of such transactions,
respectively. 

     Fluctuations in the exchange rates between the United States
dollar and the currencies of other countries in which the Company
operates or has licensees may have an impact on the Company's
consolidated results during the relevant reporting period. The
Company intends to manage any such foreign currency exposure in
the context of discrete commercial transactions and, when
appropriate, to offset such exposure in whole or in part by
entering into foreign currency forward contracts, in order to
reduce the impact of such fluctuations on results of operations.
The Company does not anticipate that the circumstances in which
such hedging activity would be appropriate will have a material
effect on the Company's liquidity.

RESULTS OF OPERATIONS

     Year Ended December 31, 1997 Compared to Year Ended
      December 31, 1996

     Total rehabilitation revenues increased 10.6% to $320.6
million from $289.9 million in 1996. The primary reason for the
increase was increased volume from the Company's corrosion and
abrasion operations in the United States and Latin America. This
increase was offset slightly by lower volume from the Company's
North American and European pipeline rehabilitation operations,
primarily due to the elimination of non-core projects, such as
cleaning and inspection. In addition, since April 1997, the
Company has accounted for its investment in Midsouth Partners on
an equity basis as a result of the composition of its management
committee; prior to such date, the Company recorded $1.8 million
of revenue in 1997, compared to $7.0 million in 1996. Fluctuations
in currency exchange rates did not have a material impact on
revenues in 1997.

     The Company's gross profit from rehabilitation activities
increased 6.5% to $94.5 million from $88.7 million in 1996. This
increase was primarily due to increased revenue, offset slightly
by lower margins. The overall gross margin achieved in 1997 was
29.5% versus 30.6% in 1996. This decrease was primarily due to
increased volume from the Company's corrosion and abrasion
operations, which traditionally carry lower margins than the
Company's pipeline rehabilitation operations.

<PAGE>
<PAGE>
     Selling administrative and general expenses decreased 4.0% to
$57.8 million from $60.2 million in 1996. This decrease was due to
cost savings gained from the reorganization of the Company's
pipeline rehabilitation operations through elimination of
positions, facilities, and realignment of responsibilities, along
with the consolidation of the Company's headquarters in
Chesterfield. This was offset slightly by increased overhead costs
related to the buildup of personnel for the Company's corrosion
and abrasion operations in Latin America. As a percentage of
revenues, selling, administrative and general expenses decreased
to 18.0% from 20.8% in 1996. This decrease was primarily
attributable to economies of scale resulting from increased
volume, along with the decrease in costs as a result of
reorganization.

     Strategic marketing and product development costs decreased
10.0% to $7.0 million from $7.7 million in 1996. This decrease was
primarily attributable to controlled spending in advertising and
research projects, along with decreased personnel in industrial
marketing.

     During 1997, the Company charged to earnings $4.6 million in
unusual expenses related to further reorganization of the
Company's pipeline rehabilitation operations and the Company's
headquarters. The expenses primarily consist of severance, moving
costs of employees and office equipment, and costs related to
exiting facilities and markets. In 1996, the unusual expenses of
$6.5 million relate to the Company's rationalization of
rehabilitation operations, as described below.

     Interest expense increased 40.3% to $8.7 million from $6.2
million in 1996, due primarily to increased debt principal of
approximately $23 million from the senior notes financing
completed in February 1997. See "Liquidity and Capital Resources"
below.

     Taxes on income increased 42.0% to $7.1 million from $5.0
million 1996 due primarily to an increase in income before taxes
on income of $7.5 million from 1996, offset by a decrease in the
effective tax rate to 41.7% from 53.0% in 1996. As indicated in
Note 16 of the Notes to Consolidated Financial Statements included
in response to "Item 14. Exhibits, Financial Statement Schedules
and Reports on Form 8-K", the 1997 and 1996 effective tax rates
were higher than the United States federal statutory rate,
primarily due to non-deductibility of goodwill amortization
associated with acquisitions, which is generally not deductible
for tax purposes, and the effect of foreign income earned taxed at
higher rates.

<PAGE>
<PAGE>
     In February 1997, as a result of the closing of the Company's
senior note financing, certain previous debt facilities were
retired. Costs of $0.4 million ($0.2 million after-tax benefits)
associated with these debt facilities which were capitalized, such
as commitment fees and legal costs, were written off. This expense
has been classified as an extraordinary item in the Company's
results of operations for 1997.

     As a result of the foregoing, net income for 1997 was $9.4
million, an increase of $4.9 million from net income in 1996.

     Year Ended December 31, 1996 Compared to Year Ended December
      31, 1995

     Rehabilitation revenues increased 6.5% to $289.9 million from
$272.2 million in the prior year, primarily as a result of the
April 1995 Enviroq Acquisition (and the consequent consolidation
of Midsouth Partners), in addition to revenue increases in United
Kingdom operations which primarily reflect the acquisition of the
FormaPipe business in November 1995. Fluctuations in currency
exchange rates of the Japanese yen, British pound sterling, French
franc and Canadian dollar to the United States dollar negatively
impacted revenues by approximately $1.2 million in 1996.

     In 1996, gross profit from rehabilitation activities
decreased 1.3% to $88.7 million from $89.9 million in 1995,
primarily due to lower margins achieved by newly-acquired
subsidiaries. In addition, there was an increase in 1996 in
worldwide volume of the Company's corrosion and abrasion
operations, which carry lower margins than those of the Company's
pipeline rehabilitation operations. 

     In 1996, selling, administrative and general expenses
increased 7.5% to $60.2 million, compared to $56.0 million in
1995. This increase is due, in large part, to the incremental
costs of operations for recently acquired entities of $1.0 million
(of which $0.3 million related to incremental goodwill and non-
compete amortization). Other increases were attributable to added
personnel costs in the Company's pipeline rehabilitation
operations, principally in the areas of industrial sales, and
operations and project management.

     Strategic marketing and product development costs did not
materially change between 1995 and 1996.

     In 1996, the Company recognized $6.5 million in unusual items
in connection with the Company's rationalization of its
contracting operations. These consisted primarily of: (i) the
write-off of certain assets associated with the use of the
Company's Paltem product line in the gas distribution main<PAGE>
<PAGE>
installation market (approximately $3.6 million), (ii) charges
related to the disposition of excess facilities (approximately
$1.4 million), and (iii) costs related to reorganization of North
American contracting operations (approximately $1.5 million).  In
1995, the Company recognized merger and restructuring costs of
approximately $14.5 million in connection with the IMA Merger,
completed in October 1995. These included transaction costs
related to the merger of $6.5 million, which were primarily
attributable to investment banking fees, legal and accounting
fees, filing fees, and management travel costs and a charge for
approximately $8.1 million relating to restructuring costs. 

     In 1996, other income increased to $1.3 million from a $1.7
million expense in 1995, primarily due to a 1995 charge to
earnings of $3.6 million during the second quarter as a result of
the settlement of a pending shareholder class action lawsuit which
entailed a cash payment to class members in the amount of $3.2
million and the issuance of 30,000 shares of Common Stock.

     In 1996, interest expense decreased 3.1% to $6.2 million from
$6.4 million in 1995, due primarily to reduced principal of the
Company's indebtedness and lower interest rates in 1996.

     Taxes on income increased to $5.0 million from $4.0 million
in 1995 as a result of an increase of $5.8 million in income
before taxes on income, offset by a decrease in the effective tax
rate to 53.0% from 109.8% in 1995. As indicated in Note 16 of the
Notes to Consolidated Financial Statements included in response to
"Item 14. Exhibits, Financial Statement Schedules and Reports on
Form 8-K," the 1996 and 1995 effective tax rates were higher than
the United States federal statutory rate, primarily due to the
non-deductibility of goodwill amortization associated with the
recent acquisitions, which is generally not deductible for tax
purposes. The 1995 effective rate was also affected by certain
merger costs which were capitalized for tax purposes.

     As a result of the foregoing, net income for 1996 was $4.5
million, an increase of $5.5 million from net income in 1995.

LIQUIDITY AND CAPITAL RESOURCES
     
     At December 31, 1997, the Company had $45.7 million in cash,
U.S. Treasury bills, and short-term investments, as compared to
$13.5 million at December 31, 1996. Cash and cash equivalents
increased by the amount of $32.2 million, primarily as a result of
the Company's completion in February 1997 (the "Senior Note
Closing") of the sale, in a private placement transaction, of $110
million principal amount of its 7.88% Senior Notes, Series A, due
February 14, 2007 (the "Senior Notes"), approximately $85 million
of which was applied at closing to the refinancing of outstanding
indebtedness of the Company and the remainder of which was applied<PAGE>
<PAGE>
to short-term investments. The Company's working capital ratio was
3.4-to-1.0 at December 31, 1997 representing an increase from 2.5-
to-1.0 from December 31, 1996.

     Operations provided cash of $27.2 million in 1997, as
compared to $28.2 million in 1996. The decline was primarily due
to slightly unfavorable changes in operating assets and
liabilities. Trade receivables, together with costs and estimated
earnings in excess of billings and retainage under construction
contracts, increased 4.8% to $88.7 million from $84.6 million in
1996, primarily attributable to an increase in revenue volume
during 1997. The collection cycle for construction receivables is
generally longer than for the Company's manufacturing and royalty
operations due to provisions for retainage, often 5% to 15% of the
contract amount, as well as the slow internal review processes
often employed by the construction subsidiaries' municipal
customers. In the United States retainage receivables are
generally received within 60 to 90 days after the completion of a
contract.

     Capital expenditures were $16.6 million in 1997, compared to
$18.2 million in 1996. Capital expenditures generally reflect
replacement equipment required by the Company's contracting
subsidiaries. During the second quarter of 1997, the Company
commenced combination of its corporate headquarters, engineering
and development center, and North American contracting
headquarters in new facilities located in Chesterfield. The cost
of moving employees and offices was estimated at $3.5 million,
including severance of approximately $1.0 million. In the second
quarter the Company incurred approximately $0.8 million and
accrued an additional $2.5 million; in the third and fourth
quarters $2.3 million was spent and applied to the accrual. The
remaining accrual will be applied to costs to be incurred over the
remaining phases of combination of facilities and employees. In
addition, during 1997 the Company commenced the construction of
its new research and development facility. The total cost of such
facility is estimated at $3.5 million, of which $2.9 has been
incurred through December 31, 1997.

     The Company has several information system improvement
initiatives underway that will require increased expenditures
during the next several years. These initiatives, which began
principally in 1997, include an improved data collection system
from our field contracting units, and continual accounting system
upgrades and modifications. The Company has assessed and continues
to assess the impact of the year 2000 issues on its operations.
Management believes that all system modifications necessary will
be completed well before the year 2000, and spending on
modifications will not have a significant impact on the Company's
operations.
<PAGE>
<PAGE>
     Financing activities provided $23.4 million in cash in 1997,
as compared to cash used of $6.1 million in 1996. This difference
is primarily related to cash generated from the Senior Notes of
approximately $25 million in February 1997, as compared to 1996,
in which the Company made net principal payments totalling $1.2
million relating to the Company's prior existing credit facility
with SunTrust Bank, Nashville, N.A. ("SunTrust") and repayment of
other subsidiary debt of $4.7 million.

     At December 31, 1996, $76.3 million was outstanding under the
Company's credit agreement (the "SunTrust Credit Agreement") with
SunTrust, as agent, and a group of participating lenders (the
"Lenders"), which provided for advances by the Lenders on a
revolving basis aggregating up to $105 million (including a $5
million standby letter of credit facility). Interest on
indebtedness under the SunTrust Credit Agreement was payable at a
rate per annum selected by the Company as either SunTrust's prime
rate plus a margin of up to .25% in the event certain financial
ratios were not maintained, or an adjusted LIBOR rate, plus a
margin ranging from 1.00% to 1.75%, depending on the maintenance
of certain financial ratios. At the Senior Note Closing, all
outstanding indebtedness to the Lenders under the Credit Agreement
($76.2 million), and outstanding indebtedness owed to SunTrust
under an industrial revenue bond encumbering the Company's
Batesville facility ($3.3 million), was prepaid.

     At the Senior Note Closing, the Company also prepaid recorded
amounts outstanding under the Company's senior subordinated note
acquired by Hanseatic Corporation in July 1993, which required
quarterly payments of interest at 8.5% per annum. Warrants with
respect to 350,877 shares of Common Stock issued in connection
with such note remain exercisable, at the election of the holder,
through July 25, 1998, at a price per share of Common Stock of
$14.25, and such shares are entitled to demand and incidental
registration rights.

     The Senior Notes issued by the Company in February 1997
mature on February 14, 2007, and bear interest, payable semi-
annually in August and February of each year, at the rate per
annum of 7.88%. Each year, from February 2001 to February 2006,
inclusive, the Company will be required to make principal payments
of $15.7 million, together with an equivalent payment at maturity.
The Senior Notes may be prepaid at the Company's option, in whole
or in part, at any time, together with a make whole premium, and
upon specified change in control events each holder has the right
to require the Company to purchase its Senior Note without any
premium thereon. 

<PAGE>
<PAGE>
     The note purchase agreements pursuant to which the Senior
Notes were acquired obligate the Company to comply with certain
financial ratios and restrictive covenants that, among other
things, place limitations on operations and sales of assets by the
Company or its subsidiaries, and limit the ability of the Company
to incur further secured indebtedness and liens and of
subsidiaries to incur indebtedness, and, in the event of default
under the Senior Notes, limit the ability of the Company to pay
cash dividends or make other distributions to the holders of its
capital stock or to redeem such stock. Such agreements also
obligate the Company's subsidiaries to provide guarantees to
holders of the Senior Notes if guaranties are delivered by them to
specified other lenders. To the extent not utilized to refinance
indebtedness of the Company at the Senior Note Closing, proceeds
of the sale of the Senior Notes are available for general
corporate purposes, including possible acquisitions of products,
technologies and businesses and repurchases of Common Stock. The
Company has not reached any determination with respect to any such
transaction, and there can be no assurance that any such
transaction will be undertaken.

     Effective August 20, 1997, the Company entered into a Loan
Agreement dated such date (the "NationsBank Credit Agreement")
with NationsBank, N.A. ("NationsBank"), whereby NationsBank will
make available to the Company, until September 1, 2000 (the
"Maturity Date"), a revolving credit line of up to $20,000,000
aggregate principal amount for working capital and permitted
acquisitions, including $5,000,000 available for standby and
commercial letters of credit. Interest on outstanding advances
accrues, at the election of the Company, at either the lender's
prime rate, payable monthly, or its LIBOR rate, plus a margin
ranging from .5% to 1.5% depending on the maintenance of certain
financial ratios, payable at the end of selected interest periods
(from one to six months). Outstanding principal is subject to
repayment on the Maturity Date, except that advances for permitted
acquisitions must be repaid within six months after disbursement.

     The NationsBank Credit Agreement obligates the Company to
comply with certain financial ratios and restrictive covenants
that, among other things, prohibit dividends and stock repurchases
in the event of loan defaults, place limitations on operations and
sales of assets by the Company and its subsidiaries and limit the
ability of the Company and its subsidiaries to incur further
secured indebtedness and liens and of subsidiaries to incur
additional indebtedness. The NationsBank Credit Agreement also
obligates certain of the Company's domestic subsidiaries to
guaranty the Company's obligations, as a result of which the same
subsidiaries have also delivered their guaranty with respect to
the Senior Notes.

<PAGE>
<PAGE>
     In October 1997, the Company completed payment of certain
secured notes issued in connection with the acquisition in October
1994 of all of the outstanding stock of Gelco and affiliates,
aggregating $1.4 million, representing net current liabilities of
the acquired companies to related parties and a portion of working
capital at closing.

     In March 1998, the Company completed the acquisition of the
entire minority interest in United Chile for an aggregate purchase
price of approximately $2.1 million, $1 million of which was paid
in connection with closing, $.6 million of which is due at the
first anniversary of closing, and the remainder of which is due on
the second anniversary of closing.

     Management believes its current working capital will be
adequate to meet its requirements for the foreseeable future.

RECENTLY ISSUED ACCOUNTING STANDARDS

     In the first quarter of 1997, the Financial Accounting
Standards Board (the "Board") issued Statement of Financial
Accounting Standards No. 128, Earnings Per Share ("SFAS 128"),
effective for financial statements for both interim and annual
periods ending after December 15, 1997. The new standard replaces
the provisions prescribed by the Accounting Principles Board
Opinion 15, simplifying earnings per share calculations and
requiring further disclosures. In addition, the Board also issued
Statement of Financial Accounting Standards No. 129, Disclosure of
Information about Capital Structure ("SFAS 129"), effective for
financial statements for periods ending after December 15, 1997.
SFAS 129 continues the existing requirements to disclose pertinent
rights and privileges of all securities other than ordinary common
stock, but expands the number of companies subject to the
requirements. The provisions of SFAS 128 and SFAS 129, and its
adoption thereof, did not have a material effect on the Company's
financial statements.

     In 1998, the Company will adopt the provisions of SFAS No.
130, "Reporting Comprehensive Income" and SFAS No. 131,
"Disclosure About Segments of an Enterprise and Related
Information." The Company does not believe the adoption of these
standards will have a material effect on the Company's financial
statement.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES
         ABOUT MARKET RISK

     Not applicable.

<PAGE>
<PAGE>
ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

          For information concerning this item, see "Item 14.
Exhibits, Financial Statement Schedules, and Reports on Form 8-K,"
which information is incorporated herein by reference. 

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON
        ACCOUNTING AND FINANCIAL DISCLOSURE

          Not applicable.  The Company has filed a Current Report
on Form 8-K dated July 17, 1996 reporting, under "Item 4. Changes
in Registrant's Certifying Accountant" thereunder, the engagement
of Arthur Andersen LLP as the Company's independent accountant in
substitution for BDO Seidman, LLP.

                            PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

          For information concerning this item, see "Item 1.
Business-Executive Officers" and the Proxy Statement to be filed
with respect to the 1998 Annual Meeting of Stockholders (the "1998
Proxy Statement"), which information is incorporated herein by
reference.

ITEM 11. EXECUTIVE COMPENSATION

          For information concerning this item, see the 1998 Proxy
Statement, which information is incorporated herein by reference.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
         MANAGEMENT

          For information concerning this item, see the 1998 Proxy
Statement, which information is incorporated herein by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

          For information concerning this item, see the 1998 Proxy
Statement, which information is incorporated herein by reference.

                             PART IV

ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES,
         AND REPORTS ON FORM 8-K

          (a)  1. Financial Statements:

          The consolidated financial statements filed in this
Annual Report on Form 10-K are listed in the attached Index to
Consolidated Financial Statements and Schedules. <PAGE>
<PAGE>
               2. Financial Statement Schedules:

          No Financial Statement Schedules are included herein
because they are not required or are not applicable or the
required information is contained in the consolidated financial
statements or notes thereto.

               3. Exhibits:

          The exhibits required to be filed as part of this Annual
Report on Form 10-K are listed in the attached Index to Exhibits.

          (b) Current Reports on Form 8-K:

               During the quarter ended December 31, 1997, the
Company did not file a Current Report on Form 8-K.

<PAGE>
<PAGE>
                        POWER OF ATTORNEY

          The registrant and each person whose signature appears
below hereby appoint Anthony W. Hooper, William A. Martin, and
Robert L. Kelley as attorneys-in-fact with full power of
substitution, severally, to execute in the name and on behalf of
the registrant and each such person, individually and in each
capacity stated below, one or more amendments to the annual report
which amendments may make such changes in the report as the
attorney-in-fact acting deems appropriate and to file any such
amendment to the report with the Securities and Exchange
Commission.


                           SIGNATURES

          Pursuant to the requirements of Section 13 or 15(d) of
the Securities Exchange Act of 1934, the registrant has duly
caused this report to be signed on its behalf by the undersigned,
thereunto duly authorized.

Dated: March 30, 1998         INSITUFORM TECHNOLOGIES, INC.


                              By s/Anthony W. Hooper
                                 --------------------------------
                                 Anthony W. Hooper
                                   President and Chief Executive
                                   Officer


          Pursuant to the requirements of the Securities Exchange
Act of 1934, this report has been signed below by the following
persons on behalf of the registrant and in the capacities and on
the dates indicated:


Signature                        Title               Date


s/Anthony W. Hooper
- -----------------------
Anthony W. Hooper         Principal Executive     March 30, 1998
                          Officer and Director


s/William A. Martin
- -----------------------
William A. Martin         Principal Financial     March 30, 1998
                          and Accounting Officer
<PAGE>
<PAGE>


s/Robert W. Affholder
- -----------------------
Robert W. Affholder       Director                March 30, 1998



s/Paul A. Biddelman
- -----------------------
Paul A. Biddelman         Director                March 30, 1998


s/Stephen P. Cortinovis
- -----------------------
Stephen P. Cortinovis     Director                March 30, 1998


s/Jerome Kalishman
- -----------------------
Jerome Kalishman          Director                March 30, 1998


s/Silas Spengler
- -----------------------
Silas Spengler            Director                March 30, 1998


s/Sheldon Weinig
- -----------------------
Sheldon Weinig            Director                March 30, 1998


s/Russell B. Wight, Jr.
- -----------------------
Russell B. Wight, Jr.     Director                March 30, 1998


s/Alfred L. Woods
- -----------------------
Alfred L. Woods           Director                March 30, 1998


<PAGE>
<PAGE>
                  INDEX TO FINANCIAL STATEMENTS



Reports of Independent Certified Public
  Accountants........................................  F-2

Consolidated Balance Sheets, December 31,
  1997 and 1996....................................    F-4

Consolidated Statements of Operations for
  each of the three years in the period
  ended December 31, 1997............................  F-6

Consolidated Statements of Stockholders'
  Equity for each of the three years in
  the period ended December 31, 1997.................  F-7

Consolidated Statements of Cash Flows
  for each of the three years in the
  period ended December 31, 1997.....................  F-8

Notes to Consolidated Financial Statements...........  F-10


     No Financial Statement Schedules are included herein because
they are not required or not applicable or the required information
is contained in the consolidated financial statements or notes
thereto.





















                               F-1<PAGE>
<PAGE>
            REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS


To the Shareholders and Board of Directors of
Insituform Technologies, Inc.:

We have audited the accompanying consolidated balance sheets of
Insituform Technologies, Inc. and subsidiaries (a Delaware
corporation) as of December 31, 1997 and 1996, and the related
consolidated statements of operations, stockholders' equity and
cash flows for the years then ended.  These financial statements
are the responsibility of the Company's management.  Our
responsibility is to express an opinion on these financial
statements based on our audits.

We conducted our audits in accordance with generally accepted
auditing standards.  Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the
financial statements are free of material misstatement.  An audit
includes examining, on a test basis, evidence supporting the
amounts and disclosures in the financial statements.  An audit
also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating
the overall financial statement presentation.  We believe that our
audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present
fairly, in all material respects, the financial position of
Insituform Technologies, Inc. and subsidiaries as of December 31,
1997 and 1996, and the results of their operations and their cash
flows for the years then ended, in conformity with generally
accepted accounting principles.



ARTHUR ANDERSEN LLP



St. Louis, Missouri,
     March 4, 1998









                               F-2<PAGE>
<PAGE>
       REPORT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


To the Shareholders and Board of Directors of
Insituform Technologies, Inc.:

We have audited the accompanying consolidated statements of
operations, stockholders' equity, and cash flows of Insituform
Technologies, Inc. and subsidiaries for the year ended
December 31, 1995.  These financial statements are the
responsibility of the Company's management. Our responsibility is
to express an opinion on these financial statements based on our
audit.

We conducted our audit in accordance with generally accepted
auditing standards. Those standards require that we plan and
perform the audit to obtain reasonable assurance about whether the
financial statements are free of material misstatement. An audit
includes examining, on a test basis, evidence supporting the
amounts and disclosures in the financial statements.  An audit
also includes assessing the accounting principles used and
significant estimates made by management, as well as evaluating
the overall financial statement presentation. We believe that our
audit provides a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to
above present fairly, in all material respects, the results of
operations and cash flows of Insituform Technologies, Inc. and
subsidiaries for the year ended December 31, 1995, in conformity
with generally accepted accounting principles.


                              BDO SEIDMAN, LLP




Memphis, Tennessee
March 8, 1996, except for
Note 13 which is as of 
March 26, 1997








                               F-3
<PAGE>
<PAGE>
<TABLE>

                      INSITUFORM TECHNOLOGIES, INC.

      CONSOLIDATED BALANCE SHEETS--AS OF DECEMBER 31, 1997 AND 1996
                (in thousands, except share information)
<CAPTION>
                  ASSETS                               1997           1996
                  ------                             --------       --------
<S>                                                  <C>            <C>
CURRENT ASSETS:
 Cash and cash equivalents, restricted
  $-0- and $573, respectively                        $ 45,734       $ 13,476
 Trade receivables, less allowance for
  doubtful accounts of $2,587 and $1,031               58,660         52,030
 Costs and estimated earnings in excess
  of billings                                          15,551         20,127
 Retainage under construction contracts                14,480         12,456
 Refundable income taxes                                2,517          4,141
 Inventories                                           12,214         15,781
 Deferred income taxes                                  5,439          4,651
 Prepaid expenses and other                             6,678          7,710
                                                     --------       --------
         Total current assets                         161,273        130,372
                                                     --------       --------

PROPERTY AND EQUIPMENT,
 less accumulated depreciation                         57,983         57,266
                                                     --------       --------

OTHER ASSETS:
 Goodwill, less accumulated amortization
  of $12,483 and $9,837, respectively                  54,133         56,943
 Patents and patent applications, less
  accumulated amortization of $4,496
  and $3,889, respectively                             11,610         10,049
 Investments in licensees and affiliated
  companies                                             5,499          3,137
 Noncompete agreements, less accumulated
  amortization of $4,282 and $3,327,
  respectively                                          1,744          2,699
 Other                                                  5,610          5,036
                                                     --------       --------
         Total other assets                            78,596         77,864
                                                     --------       --------
         Total assets                                $297,852       $265,502
                                                     ========       ========


                    (Continued on the following page)

                                   F-4
</TABLE>
<PAGE>
<PAGE>
<TABLE>
                  (in thousands, except per share data)
<CAPTION>
    LIABILITIES AND STOCKHOLDERS' EQUITY               1997           1996
    ------------------------------------             --------       --------
<S>                                                  <C>            <C>
CURRENT LIABILITIES:
 Notes payable to banks                              $  1,231       $  1,387
 Accounts payable and accruals                         41,698         40,578
 Income taxes payable                                   3,172          2,801
 Current maturities of long-term debt                     889          6,730
                                                     --------       --------
      Total current liabilities                        46,990         51,496

LONG-TERM DEBT, less current maturities               111,440         82,384

DEFERRED INCOME TAXES                                   3,258          1,700

OTHER LIABILITIES                                       1,017          1,084
                                                     --------       --------
      Total liabilities                               162,705        136,664
                                                     --------       --------
MINORITY INTERESTS                                      3,645          5,635
                                                     --------       --------
COMMITMENTS AND CONTINGENCIES (Note 17)

STOCKHOLDERS' EQUITY:
 Preferred stock, undesignated, $.10 par-
  shares authorized 2,000,000; none out-
  standing                                               -             -
 Common stock, $.01 par- shares authorized
  40,000,000; shares outstanding 27,214,718
  and 27,144,331                                          272            271
 Additional paid-in capital                            68,119         67,824
 Retained earnings                                     68,468         59,049
                                                     --------       --------
                                                      136,859        127,144

Treasury stock - 255,801 shares                        (3,269)        (3,269)
Cumulative foreign currency translation
 adjustments                                           (2,088)          (672)
                                                     --------       --------
     Total stockholders' equity                       131,502        123,203
                                                     --------       --------
     Total liabilities and stockholders' equity      $297,852       $265,502
                                                     ========       ========






   The accompanying notes are an integral part of these balance sheets

                                   F-5
</TABLE>
<PAGE>
<PAGE>
<TABLE>
             INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

                  CONSOLIDATED STATEMENTS OF OPERATIONS

          FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995

<CAPTION>
                                          1997       1996     1995
                                        -------    -------  -------
                                             (In thousands, except
                                               per share amounts)
<S>                                     <C>        <C>      <C>
REHABILITATION REVENUES                 $ 320,640  $ 289,933$ 272,203
                                        ---------  ------------------
OPERATING COSTS AND EXPENSES:
 Cost of rehabilitation                   226,152    201,219  182,286
 Selling, administrative and general       57,845     60,181   55,990
 Strategic marketing and product
   development                              7,007      7,689    7,636
 Unusual items                              4,606      6,498   14,541
                                        ---------  ------------------
TOTAL OPERATING COSTS AND EXPENSES        295,610    275,587  260,453
                                        ---------  ------------------
OPERATING INCOME                           25,030     14,346   11,750
                                        ---------  ------------------
OTHER INCOME (EXPENSE):
 Interest expense                          (8,750)    (6,223)  (6,393)
 Other                                        647      1,290   (1,727)
                                        ---------  ------------------
TOTAL OTHER INCOME (EXPENSE)               (8,103)    (4,933)  (8,120)
                                        ---------  ------------------
INCOME BEFORE TAXES ON INCOME              16,927      9,413    3,630

TAXES ON INCOME                             7,067      4,985    3,987
                                        ---------  ------------------
INCOME (LOSS) BEFORE MINORITY INTERESTS
 AND EQUITY IN EARNINGS                     9,860      4,428     (357)

MINORITY INTERESTS                           (519)      (377)  (1,275)

EQUITY IN EARNINGS OF AFFILIATED COMPANIES    303        441      666
                                        ---------  ------------------
INCOME (LOSS) BEFORE EXTRAORDINARY ITEM     9,644      4,492     (966)
EXTRAORDINARY ITEM-  Loss on early
 retirement of debt (net of income tax
 benefits)                                   (225)      -          -
                                        ---------  ------------------
NET INCOME (LOSS)                       $   9,419  $   4,492$    (966)
                                        =========  ==================
BASIC AND DILUTED EARNINGS (LOSS)
 PER SHARE OF COMMON STOCK AND
 COMMON STOCK EQUIVALENTS:
   Income (loss) before extraordinary item$     .36$     .17$    (.04)
   Extraordinary loss, net of income
     tax benefits                            (.01)      -        -
                                        ---------  ------------------
   Net income (loss)                    $     .35  $     .17$    (.04)
                                        =========  ==================

                                 F-6
</TABLE>
<PAGE>
<PAGE>
<TABLE>
                        INSITUFORM TECHNOLOGIES, INC.

               CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

            FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
<CAPTION>
                                                                                Cumulative
                                                                                 Foreign
                            Common Stock      Additional                         Currency
                          -----------------    Paid-In     Retained   Treasury  Translation
                          Shares     Amount    Capital     Earnings    Stock    Adjustments
                         --------   --------  -----------  --------   --------  -----------
                                        (In thousands, except number of shares)
<S>                      <C>        <C>       <C>          <C>        <C>       <C>
BALANCE,
 December 31, 1994       26,711,031  $267     $63,270      $56,262    $   -     $(1,733)

 Net Loss for the year       -         -         -            (966)       -         -
 Issuance of common
  stock upon exercise
  of options, including
  income tax benefit of
  $530                      393,909     4       4,157          -          -         -
 Dividends declared          -         -         -            (739)       -         -
 Other                       -         -         -             -          -         (88)
                         ----------  ----     -------      -------    --------  -------
BALANCE,
 December 31, 1995       27,104,940   271      67,427       54,557        -      (1,821)

 Net income for the year     -         -         -           4,492        -         -
 Issuance of common
  stock upon exercise
  of options, including
  income tax benefit of
  $15                         9,391    -           76          -          -         -
 Stock issued in con-
  junction with liti-
  gation settlement          30,000    -          321          -          -         -
 Foreclosure of note
  receivable from
  affiliates                 -         -         -             -       (3,269)      -
 Other                       -         -         -             -          -       1,149
                         ----------  ----     -------      -------    --------  -------
BALANCE,
 December 31, 1996       27,144,331   271      67,824       59,049     (3,269)     (672)

 Net income for the year     -         -         -           9,419        -         -
 Issuance of common
  stock upon exercise
  of options                 70,387     1         295          -          -         -
 Other                       -         -         -             -          -      (1,416)
                         ----------  ----     -------      -------    --------  -------
BALANCE,
 December 31, 1997       27,214,718  $272     $68,119      $68,468    $(3,269)  $(2,088)
                         ==========  ====     =======      =======    ========  =======



                      (Continued on the following page)

                                     F-7
/TABLE
<PAGE>
<PAGE>
<TABLE>
<CAPTION>
                            Unrealized        Notes
                             Holding        Receivable        Total
                             Gains on         From         Stockholders'
                            Investments     Affiliates        Equity
                            -----------     ----------     -------------
                                  (In thousands, except number of shares)
<S>                         <C>             <C>            <C>
BALANCE,
 December 31, 1994          $ 438           $(3,624)       $114,880

 Net Loss for the year        -                -               (966)
 Issuance of common
  stock upon exercise
  of options, including
  income tax benefit of
  $530                        -                -              4,161
 Dividends declared           -                -               (739)
 Other                       (438)             -               (526)
                            -----           -------        --------
BALANCE,
 December 31, 1995            -              (3,624)        116,810

 Net income for the year      -                -              4,492
 Issuance of common
  stock upon exercise
  of options, including
  income tax benefit of
  $15                         -                -                 76
 Stock issued in con-
  junction with liti-
  gation settlement           -                -                321
 Foreclosure of note
  receivable from
  affiliates                  -               3,624             355
 Other                        -                -              1,149
                            -----           -------        --------
BALANCE,
 December 31, 1996            -                -            123,203

 Net income for the year      -                -              9,419
 Issuance of common
  stock upon exercise
  of options                  -                -                296 
 Other                        -                -             (1,416)
                            -----           -------        --------
BALANCE,
 December 31, 1996          $ 0             $  0           $131,502
                            =====           =======        ========






       The accompanying notes are an integral part of these statements


</TABLE>
<PAGE>
<PAGE>
<TABLE>
               INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

                    CONSOLIDATED STATEMENTS OF CASH FLOWS

            FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995

<CAPTION>
                                          1997       1996     1995
                                        -------    -------  -------
                                               (In thousands)
<S>                                     <C>        <C>      <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
 Net income (loss)                      $  9,419   $  4,492 $   (966)
 Adjustments to reconcile net income
  (loss) to net cash provided by
  operating activities-
   Minority interests in net income          519        377    1,275
   Provision for unusual items              (891)     2,381    4,123
   Depreciation and amortization          19,240     19,180   16,799
   Other                                   1,095      1,909      424
   Deferred income taxes                     728       (279)  (1,246)
   Equity in earnings of affiliated
    companies                               (303)      (441)    (666)
   Changes in operating assets and
    liabilities, net of effects of
    businesses purchased-
     Receivables                          (5,805)    (8,217)    (972)
     Inventories                           2,766        (15)  (4,106)
     Prepaid expenses and other            1,032      2,510   (4,084)
     Other assets                           (526)       609      123
     Accounts payable and accruals        (2,097)     5,571   (3,795)
     Income taxes                          1,995         78   (5,268)
                                        --------   -------- --------
     Net cash provided by operating
      activities                          27,172     28,155    1,641
                                        --------   -------- --------
     Net cash used by discontinued
      operations                            -          -        (500)
                                        --------   -------- --------
     Net cash provided by operations      27,172     28,155    1,141
                                        --------   -------- --------
CASH FLOWS FROM INVESTING ACTIVITIES:
 Capital expenditures                    (16,552)   (18,187) (16,497)
 Proceeds from (investments in) licensees
  and affiliated companies                   140     (1,141)     445
 Patents and patent application
  expenditures                            (2,227)    (1,772)  (1,445)
 Purchases of businesses, net of cash
   acquired                                  -          -    (18,885)
 Proceeds on disposal of property and
   equipment                                 426        780    2,506
 Other                                      -          -        (790)
                                        --------   -------- --------
   Net cash used in investing activities (18,213)   (20,320) (34,666)

                  (Continued on the following page)

                                 F-8
<PAGE>
<PAGE>

</TABLE>
<TABLE>                                   1997       1996     1995
                                        -------    -------  -------
                                               (In thousands)
<S>                                     <C>        <C>      <C>
CASH FLOWS FROM FINANCING ACTIVITIES:
 Proceeds from issuance of common stock $    296   $     61 $  3,631
 Proceeds from long-term debt            110,515      5,868   40,812
 Principal payments on long-term debt    (87,105)   (11,775)  (9,439)
 Minority interests                         (178)      (562)    (155)
 Increase (decrease) in short-term
   borrowings                               (124)       333   (7,293)
 Dividends paid                             -          -      (1,476)
                                        --------   -------- --------
     Net cash provided (used) by financing
     activities                           23,404     (6,075)  26,080
                                        --------   -------- --------
EFFECT OF EXCHANGE RATE CHANGES ON CASH     (105)       300      191
                                        --------   -------- --------
NET INCREASE (DECREASE) IN CASH AND
 CASH EQUIVALENTS FOR THE YEAR            32,258      2,060   (7,254)

CASH AND CASH EQUIVALENTS, beginning of year  13,476  11,416  18,670
                                        --------   -------- --------
CASH AND CASH EQUIVALENTS, end of year  $ 45,734   $ 13,476 $ 11,416
                                        ========   ======== ========
SUPPLEMENTAL DISCLOSURES OF CASH
 FLOW INFORMATION:
  Cash paid for-
   Interest (net of amount capitalized) $  5,849   $  7,478 $  6,165
   Income taxes                            1,686      4,864    8,265

NONCASH INVESTING AND FINANCING ACTIVITIES:
 Deferred consideration for intangible
  assets acquired                       $    -     $   -    $  1,000
 Additional paid-in capital increased by
  reduction in income taxes payable for
  tax benefit arising from exercise of
  stock options                              -           15      530
 Deferred consideration for businesses
  acquired                                   -         -       3,000
 Treasury stock acquired in connection
  with foreclosure of director note
  receivable                                 -        3,624     -
 Tax benefit arising from foreclosure
  of director note receivable                -          760     -



  The accompanying notes are an integral part of these statements.


                                 F-9
/TABLE
<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

1.   DESCRIPTION OF BUSINESS:

Insituform Technologies, Inc. (a Delaware corporation) and
subsidiaries (collectively, the "Company" or "ITI") is a worldwide
provider of proprietary trenchless technologies for the
rehabilitation and improvement of sewer, water, gas and industrial
pipes. The Company's primary technology is the Insituform(R)
Process, a "cured-in-place" pipeline rehabilitation process.  The
Company's Tite Liner(R) Process is a method of lining steel lines
with a corrosion and abrasion resistant pipe. Through its
Affholder, Inc. subsidiary, the Company is engaged in trenchless
tunneling used in the installation of new underground services.

2.   SUMMARY OF ACCOUNTING POLICIES:

Principles of Consolidation

The consolidated financial statements include the accounts of the
Company and its majority-owned subsidiaries, including a 51% owned
United Kingdom subsidiary, Insituform Linings, Plc., a 60% owned
Chilean subsidiary, United Sistema de Tuberias, Ltda., a 55% owned
Mexican subsidiary, United Pipeline de Mexico, S.A. and a 66%
owned French subsidiary, Insituform France, S.A.  All intercompany
balances, transactions and stockholdings are eliminated.

Accounting Estimates

The preparation of financial statements in conformity with
generally accepted accounting principles requires management to
make estimates and assumptions that affect the reported amounts of
assets and liabilities and disclosure of contingent assets and
liabilities at the date of the financial statements and the
reported amounts of revenues and expenses during the reporting
period.  Actual results could differ from those estimates.

Business Acquisitions

The accounts and operations of business acquired in exchange for
common stock, and which were accounted for as poolings of
interests, are included in the financial statements as if they had
always been subsidiaries.

The net assets of businesses acquired and accounted for using the
purchase method of accounting are recorded at their fair values at
the acquisition dates, and the financial statements include their
operations only from those dates.  Any excess of acquisition costs

                              F-10<PAGE>
<PAGE>
     INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

       NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

over the fair value of net assets acquired is included in the
balance sheet as goodwill.

Taxes on Income

The Company provides for estimated income taxes payable or
refundable on current year income tax returns as well as the
estimated future tax effects attributable to temporary differences
and carryforwards, based upon enacted tax laws and tax rates.

U.S. and foreign income taxes are not provided on undistributed
earnings of foreign subsidiaries where it is the Company's
intention to indefinitely reinvest such earnings in the
subsidiary's operations and not to transfer them in a taxable
transaction.

Foreign Currency Translation

Results of operations for foreign entities are translated using
the average exchange rates during the period.  Assets and
liabilities are translated to U.S. dollars using the exchange
rates in effect at the balance sheet date, and the related
translation adjustments are reported as a separate component of
stockholders' equity.

Cash and Cash Equivalents

The Company classifies highly liquid investments with original
maturities of 90 days or less as cash equivalents.

Fair Value of Financial Instruments

Recorded book values are reasonable estimates of fair value for
cash and cash equivalents, receivables and accounts payable. 
Current market values for debt instruments with fixed interest
rates are estimated based upon borrowing rates currently available
to the Company for loans with similar terms.

Investments

Corporate investments are carried at cost if ownership is less
than 20% and on the equity method if the Company's ownership
interest is 20% and greater, but not exceeding 50%.  Investments
in partnerships for which the Company's ownership interest is not
greater than 50% are accounted for on the equity method.  In
addition, the Company accounts for its interest in Midsouth
Partners, a domestic partnership 57-1/2% owned by the Company, on

                              F-11<PAGE>
<PAGE>
    INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

      NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

the equity method, as a consequence of Midsouth's management
composition being vested in a seven member management committee
controlled by the minority partner.  The minority partner was
granted majority control following a determination by an
arbitration panel that one Company subsidiary was in default of
certain obligations under the partnership agreement.  Intercompany
profits and losses are eliminated for those investments carried on
the equity method.

Inventories

Inventories are valued at the lower of cost (first-in, first-out)
or market.  Maintenance and office supplies are not inventoried.

Property, Equipment and Depreciation

Property and equipment are stated at cost.  Depreciation on
property and equipment is computed using the straight-line method
over the following estimated useful lives:

                                        Years

     Land improvements                  15-20
     Buildings and improvements          5-40
     Machinery and equipment             4-10
     Furniture and fixtures              3-10
     Autos and trucks                    3-10

Intangibles

The Company amortizes goodwill over periods not in excess of 25
years on the straight-line basis.  Noncompete agreements are
amortized on a straight-line basis over the term of the applicable
agreements.

Patent costs are amortized on a straight-line basis over the
statutory life, normally not exceeding 20 years.  Certain of the
Company's patents related to the Insituform process have expired
in many countries, including the United States.

The Company's management continually evaluates the market coverage
and earnings capacity of its acquires and its patented processes
to determine if the unamortized balances can be recovered from
their undiscounted future cash flows.

                              F-12<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995


Royalty Revenues and License Fees

Royalty revenues are accrued as earned in accordance with the
provisions of the license agreements and are recorded based upon
reports submitted by the licensees.  License fees are recognized
as revenues when all material services have been substantially
performed.

Construction and Installation Revenues

Construction and installation revenues are recognized using the
percentage-of-completion method.  Contract costs include all
direct material and labor costs and those indirect costs related
to contract performance, such as indirect labor, supplies, tools
and equipment costs.  Changes in estimated total contract costs
are recognized in the period they are determined.  Where a
contract loss is forecast, the full amount of the anticipated loss
is recognized in the period the loss is determined.

Earnings Per Share

In the first quarter of 1997, the Financial Accounting Standards
Board ("the Board") issued Statement of Financial Accounting
Standard No. 128, Earnings Per Share ("SFAS 128"), effective for
financial statements for both interim and annual periods ending
after December 15, 1997.  The new standard replaced the provisions
provided by Accounting Principles Board Opinion 15, simplifying
earnings per share calculations and requiring further disclosures.

Earnings per share amounts for the years ended December 31, 1996
and 1995, respectively, have been recalculated to give effect to
the application of SFAS 128.  The effect of restatement had no
material effect on either year.

Earnings per share has been calculated as follows:



                              F-13<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995
<TABLE>
<CAPTION>
                              1997           1996           1995
                              ----           ----           ----
<S>                           <C>            <C>            <C>
Weighted average number of
 common shares used for
 Basic EPS                    26,926,148     27,036,008     26,902,321

Effect of dilutive stock
 options and warrants             46,900         76,838         -   (a)
                              ----------     ----------     ----------
Weighted average number of
 common shares and dilutive
 potential common stock used
 in diluted EPS               26,973,048     27,112,846     26,902,321
                              ==========     ==========     ==========
</TABLE>

(a)  In 1995, the Company reported a net loss.  Therefore, all
stock options and warrants were antidilutive.

Reclassifications

Certain prior year amounts in the consolidated financial
statements have been reclassified to conform to the 1997
presentation.

3.   BUSINESS ACQUISITIONS:

Insituform Mid-America, Inc.

On October 25, 1995, the Company completed the acquisition (the
"IMA Merger") of Insituform Mid-America, Inc. ("IMA") through the
merger into IMA of the Company's wholly owned subsidiary, ITI
Acquisition Corp.  As a result, IMA became a wholly owned
subsidiary of the Company.  The Company issued an aggregate of
12,450,896 shares of common stock to all prior holders of IMA's
Class A common stock, subsequent to the conversion, in accordance
with its terms, of all shares of IMA Class B common stock into IMA
Class A common stock.

The IMA Merger has been accounted for using the pooling-of-
interests method of accounting and, accordingly, the accompanying
consolidated financial statements give retroactive effect to the
acquisition, as if the companies had always operated as a single
entity.

                              F-14<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

Combined and separate results of the Company and IMA are as
follows (in thousands):
<TABLE>
<CAPTION>
                         ITI       IMA    Eliminations Combined
                         ---       ---    ------------ --------
<S>                      <C>       <C>    <C>          <C>
January 1, 1995, to
  October 25, 1995:
    Revenues             $141,381  $94,341  $(10,617)  $225,105
    Net income              6,312    4,142      -        10,454
</TABLE>

Enviroq

On April 18, 1995, the Company acquired the pipeline
rehabilitation business of Enviroq Corporation ("Enviroq"),
including Enviroq's Insituform process business conducted by its
Insituform Southeast, Inc. subsidiary in Alabama, Florida,
Georgia, North Carolina and South Carolina, through the merger
into Enviroq of a wholly owned subsidiary of the Company.  This
acquisition has been accounted for using the purchase method of
accounting.

The base purchase price of $18,250,000 (including $3,000,000 in
payment of a five-year covenant not to compete) was paid
$15,250,000 in cash and $3,000,000 in a five-year subordinated
promissory note.  In March 1996, as a result of demands for
payment and ensuing litigation, the Company discharged  its
obligation under such note and under arrangements to pay $1
million in consulting fees over five years, and settled such
litigation for the aggregate amount of $3.1 million  and the
release of other claims.

The following table presents summarized consolidated unaudited pro
forma results of operations for 1995 as if the Enviroq acquisition
had occurred at the beginning of 1995.  These pro forma results
are provided for comparative purposes only and do not purport to
be indicative of the results which would have been obtained if
these acquisitions had been effected on the dates indicated or
which may be obtained in the future.

     Year Ended December 31, 1995 (in thousands)
     ------------------------------------------
     Total revenues                          $282,742
     Net loss                                  (1,709)
     Basic and diluted loss per share            (.06)

                              F-15<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

Other

During 1995, the Company also completed two smaller acquisitions. 
On February 16, 1995, the Company acquired 66% of the common stock
of Insituform France, S.A., a newly formed subsidiary of its
former French licensee, for approximately $1,463,000. 
Additionally, on November 30, 1995, the Company completed the
acquisition of the UK-based Formapipe Division of Water Flow
Services Limited, for $4,308,000.

4.   UNUSUAL ITEMS:

In 1997, the Company recorded $4.0 million in costs related to
further reorganization of pipeline rehabilitation operations and
corporate headquarters.  These costs consisted primarily of
severance, employee moving costs and expenses related to existing
facilities and markets.

In June 1997, a group, including Jerome Kalishman and Robert
Affholder, both directors of the Company, filed an amended
Schedule 13D pursuant to the Securities and Exchange Act of 1934
which stated that it was the intention of Messrs. Kalishman and
Affholder to propose a slate of individuals to run for election to
the Board of Directors of the Company at its 1997 annual meeting
of stockholders in opposition to the slate proposed by the Company
in its original proxy statement.  On July 25, 1997, the Company
and Messrs. Kalishman and Affholder entered into a settlement
agreement to resolve the outstanding proxy contest.  The Company
incurred costs of $0.6 million (prior to any effect of taxes)
related to legal and proxy solicitation expenses.

In 1996, the Company recorded $6.5 million in costs related to the
ongoing rationalization of pipeline rehabilitation operations. 
These costs consisted principally of the write-off of certain
assets of the Paltem product line ($3.6 million), charges related
to the disposition of excess facilities ($1.4 million), and costs
related to reorganization of the North American contracting
operations ($1.5 million).

The write-off of the Paltem product line includes $2.8 million of
manufacturing and installation equipment that related specifically
to the gas distribution main installation market, which the
Company has decided not to pursue.  The Paltem product line may,
however, be used in other markets.

                              F-16<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

Costs related to the IMA Merger of approximately $6.48 million
were charged to expense, primarily during the fourth quarter of
1995.  (See Note 16 for information regarding the related impact
on taxes on income.)  The Company also recorded a pretax charge of
approximately $8.06 million in the fourth quarter of 1995 for
restructuring costs, including the consolidation of corrosion and
abrasion protection operations under the Tite Liner process and
the abandonment of certain assets related to the UltraPipe Process
(approximately $2.6 million), the rationalization of certain
Canadian operations to one facility in Edmonton (approximately
$0.5 million), the elimination of certain duplicative management
positions (approximately $0.8 million), the relocation of certain
domestic employees and functions ($1.7 million) and the
termination of construction on IMA's new manufacturing facility in
Chesterfield, Missouri ($1.8 million).

5.   ALLOWANCE FOR DOUBTFUL ACCOUNTS:

Activity in the allowance for doubtful accounts is summarized as
follows for the years ended December 31 (in thousands):
<TABLE>
<CAPTION>
                                   1997      1996      1995
                                   ----      ----      ----
<S>                                <C>       <C>       <C>
Balance, at beginning of period    $ 1,031   $  974    $ 637
Charged to expense                   1,658      289      657
Uncollected balances written off,
 net of recoveries                    (102)    (232)    (320)
                                   -------   ------    -----
Balance, at end of period          $ 2,587   $1,031    $ 974
                                   =======   ======    =====
</TABLE>

6.   COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS:

Costs and estimated earnings on uncompleted contracts consist of
the following at December 31 (in thousands):


                              F-17<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995
<TABLE>
<CAPTION>
                                        1997       1996
                                        ----       ----
<S>                                     <C>        <C>
Costs incurred on uncompleted contracts $ 123,808  $ 105,109
Estimated earnings                         33,985     17,097
                                        ---------  ---------
                                          157,793    122,206
Less-Billings to date                    (144,794)  (103,098)
                                        ---------  ---------
                                        $  12,999  $  19,108
                                        =========  =========
Included in the accompanying balance sheets:
  Costs and estimated earnings in
     excess of billings                 $  15,551  $  20,127
  Billings in excess of costs and 
     estimated earnings on uncompleted 
     contracts (Note 12)                   (2,552)    (1,019)
                                        ---------  ---------
                                        $  12,999  $  19,108
                                        =========  =========
</TABLE>

Costs and estimated earnings in excess of billings represent work
performed which either due to contract stipulations or lacking
contractual documentation needed, could not be billed. 
Substantially all unbilled amounts are expected to be collected
within one year.

7.   INVENTORIES:

Inventories are summarized as follows at December 31 (in
thousands):
<TABLE>
<CAPTION>
                                        1997       1996
                                        ----       ----
     <S>                                <C>        <C>
     Raw materials                      $  2,127   $   968
     Manufactured components               2,222     1,921
     Work-in-process                         674     1,289
     Finished products                     2,565     1,988
     Construction materials                4,626     9,615
                                        --------   -------
                                        $ 12,214   $15,781
                                        ========   =======

                                F-18
/TABLE
<PAGE>
<PAGE>
           INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                  DECEMBER 31, 1997, 1996 AND 1995

8.   PROPERTY AND EQUIPMENT:

Property and equipment consists of the following at December 31
(in thousands):
<TABLE>
<CAPTION>
                                        1997       1996
                                        ----       ----
     <S>                                <C>        <C>
     Land and land improvements         $  2,659   $  2,667
     Buildings and improvements           15,824     15,715
     Machinery and equipment              82,630     77,608
     Furniture and fixtures                8,820      8,796
     Autos and trucks                      2,456      2,647
     Construction in  progress             5,987      1,730
                                        --------   --------
                                         118,376    109,163
Less-  Accumulated depreciation          (60,393)   (51,897)
                                        --------   --------
                                        $ 57,983   $ 57,266
                                        ========   ========
</TABLE>

9.   INVESTMENTS IN LICENSEES AND AFFILIATED COMPANIES:

Investments in licensees and affiliated companies consist of the
following at December 31 (in thousands):
<TABLE>
<CAPTION>
                                        1997       1996
                                        ----       ----
<S>                                     <C>        <C>
Insituform Rohrsanierungstechnik
 GmbH (50%)                             $ 2,855    $ 2,800
Midsouth Partners (57-1/2%)               2,217       - 
Other 50% owned joint ventures              427        337
                                        -------    -------
                                        $ 5,499    $ 3,137
                                        =======    =======
</TABLE>

Beginning in April 1997, the Company began accounting for its
investment in Midsouth Partners on the equity method, as a
consequence of Midsouth's management committee comprised of a
majority of members named by the minority partner.

                              F-19<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

10.  NOTES PAYABLE TO BANKS:

Effective August 20, 1997, the Company entered into a Loan
Agreement dated such date (the "Credit Agreement") with
NationsBank, N.A. ("NationsBank"), whereby NationsBank will make
available to the Company, until September 1, 2000 (the "Maturity
Date"), a revolving credit line of up to $20,000,000 aggregate
principal amount for working capital and permitted acquisitions,
including $5,000,000 available for standby and commercial letters
of credit, of which $3,466,000 was outstanding at December 31,
1997.  Interest on outstanding advances accrues, at the election
of the Company, at either the Lender's prime rate, payable
monthly, or its LIBOR rate, plus a margin ranging from .5% to 1.5%
depending on the maintenance of certain financial ratios, payable
at the end of selected interest periods (from one to six months). 
Outstanding principal is subject to repayment on the Maturity
Date, except that advances for permitted acquisitions must be
repaid within six months after disbursement.

The Credit Agreement obligates the Company to comply with certain
financial ratios and restrictive covenants that, among other
things, prohibit dividends and stock repurchases in the event of
loan defaults, place limitations on operations and sales of assets
by the Company and its subsidiaries, and limit the ability of the
Company and its subsidiaries to incur further secured indebtedness
and liens and of subsidiaries to incur additional indebtedness. 
The Credit Agreement also obligates certain of the Company's
domestic subsidiaries to guarantee the Company's obligations, as
a result of which the same subsidiaries have also delivered their
guaranty with respect to the Senior Notes described in Note 11.

Insituform Technologies Limited (formerly Insituform Permaline
Limited) ("ITL") has a line of credit and overdraft facility of
pounds sterling 473,000 (US$781,000) with National Westminister
Bank Plc ("NatWest") which bears interest at NatWest's base rate
(7.25% at December 31, 1997) plus 2.0%.  The facility is available
through July 1998, and is secured by ITL's real property and the
Company's guarantee.  At December 31, 1997 and 1996, respectively,
pounds sterling -0- and pounds sterling 473,000 (US$800,000) were
outstanding under this facility.

Insituform France SA has a line of credit and overdraft facility
of FF5,750,000 (US $956,000) with Societe Generale which bears
interest at LIBOR plus 0.6% to 1.0%; this facility is available
through April 2001 and is secured by a company guarantee.  At
December 31, 1997 and 1996, respectively, FF1,908,000 (US$317,000)
and FF2,829,000 (US$545,000) were outstanding under this facility.

                              F-20<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

11.  LONG-TERM DEBT:

Long-term debt consists of the following at December 31 (in
thousands):
<TABLE>
<CAPTION>
                                             1997        1996
                                             ----        ----
<S>                                          <C>         <C>
LONG-TERM DEBT:
 7.88% senior notes, payable in $15,715
  annual installments beginning February
  2001 through 2007, with interest payable
  semiannually                               $110,000    $   -
 SunTrust facilities, retired in February 1997            -  76,275
 8.5% senior subordinated note, payable in
  $1,000 installments annually each July 1998
  through 2001, with the entire remaining
  balance due in July 2002 with interest
  quarterly (net of unamortized discount
  of $211 and $270), retired in February
  1997                                           -          4,789
 Industrial revenue bond, quarterly
  payments ranging from $85 to $170
  through January 2004, with interest
  at 90% of prime (prime was 8.25% at
  December 31, 1996), retired in February
  1997                                           -          3,356

DEFERRED PURCHASE CONSIDERATION:
 Promissory notes to affiliates of former
  shareholders of Gelco companies, payable
  in two equal installments in October 1996
  and 1997, with interest payable quarterly
  at lesser of prime or LIBOR + 2.75%
  (prime was 8.25% at December 31, 1996)         -          1,425

OTHER NOTES                                     2,329       3,269
                                             --------    --------
                                              112,329      89,114
Less-  Current maturities                        (889)     (6,730)
                                             --------    --------
                                             $111,440    $ 82,384
                                             ========    ========
</TABLE>

On February 14, 1997, the Company completed a $110 million private
debt offering of 7.88% Senior Notes due February 14, 2007 ("Senior
Notes").  Interest is payable semiannually in August and February
of each year, and each year, from February 2001 to February 2006,
inclusive, the Company is required to make principal repayments of
$15,715,000, together with an equivalent payment at maturity.  The
Senior Notes may be prepaid at the Company's option, in whole or

                              F-21<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

in part, at any time, together with a make-whole premium, and upon
specified change in control events each holder has the right to
require the Company to purchase its Senior Note without any
premium thereon.  The agreements obligate the Company to comply
with certain financial ratios and restrictive covenants that,
among other things, place limitations on operations and sales of
assets by the Company or its subsidiaries, and limit the ability
of the Company to incur further secured indebtedness and liens. 
Such agreements also obligate the Company's subsidiaries to
provide guarantees to the holders of the Senior Notes if
guaranties are given by them to certain other lenders.

Prior to its prepayment in February 1997, the SunTrust facility
was due to mature in October 2000, with installments based on a
five-year amortization schedule, commencing December 31, 1997. 
Interest on indebtedness under the facility was payable at either
(i) SunTrust's prime rate, plus a margin of up to .25% in the
event certain financial ratios were not maintained, or (ii) an
adjusted LIBOR rate, plus a margin ranging from 1.00% to 1.75%,
depending on the maintenance of certain financial ratios.  Up to
$5 million under the credit facility was available to be borrowed
from SunTrust pursuant to a "swing line facility," which accrued
interest at a rate per annum equal to 0.5% below SunTrust's prime
rate.  Such facility obligated the Company to comply with certain
financial ratios and restrictive covenants that, among other
things, limited the ability of the Company and its subsidiaries to
incur indebtedness, pay dividends, make loans and encumber any
properties, and required guarantees of certain domestic
subsidiaries.  Essentially all of the Company's retained earnings
at December 31, 1996 were restricted under such covenants.

Prior to its prepayment in February 1997, the 8.5% senior
subordinated note was subordinated in right to the Company's bank
and other institutional financing and to deferred consideration
incurred in connection with business acquisitions.  As discussed
in Note 13, warrants to purchase 350,877 unregistered shares of
Common Stock were also issued to the lender.  The note was
prepayable at the Company's option, at premiums until July 1998
ranging from 3% to 1% of the amount prepaid.  The subordinated
note also restricted the Company's ability to pay dividends and
repurchase outstanding common stock.

Prior to its prepayment in February 1997, the industrial revenue
bond was subject to call by the holder, an institutional
purchaser, in 1999 or each year thereafter until maturity. 
Property and equipment with a net book value of approximately

                              F-22<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995

$3,500,000 was pledged to collateralize these bonds.  These bonds
also restricted the Company's ability to pay dividends.

Debt issuance costs of $891,000 incurred in connection with the
private debt offering were recorded as deferred charges and will
be amortized over the life of the Senior Notes.  The net proceeds
were used to repay existing indebtedness (approximately $85
million), as discussed above, and for general corporate purposes.

Costs of approximately $400,000 ($225,000 after tax) associated
with the prior credit facility were written off and have been
classified as an extraordinary item in the 1997 results of
operations.

At December 31, 1997 and 1996, the estimated fair value of the
Company's long-term debt was approximately $118.1 million and $89
million, respectively.

Principal payments required to be made for each of the next five
years and thereafter are summarized as follows (in thousands):

     Years ending December 31           Amount 

     1998                               $    889
     1999                                    684
     2000                                    349
     2001                                 15,920
     2002                                 15,917
     After 2002                           78,570
                                        --------
          Total                         $112,329
                                        ========


12.  ACCOUNTS PAYABLE AND ACCRUALS:

Accounts payable and accruals consist of the following at
December 31 (in thousands):

                              F-23<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

                DECEMBER 31, 1997, 1996 AND 1995
<TABLE>
<CAPTION>
                                        1997       1996
                                        ----       ----
     <S>                                <C>        <C>
     Accounts payable - trade           $   8,071  $ 17,108
     Compensation and profit sharing       11,466     6,759
     Interest                               3,232       225
     Merger and restructuring               2,464     2,840
     Accrued litigation and fees            2,778     1,180
     Bank overdrafts                         -        3,369
     Billings in excess of costs and
      earnings                              2,552     1,019
     Other                                 11,135     8,078
                                        ---------  --------
                                        $  41,698  $ 40,578
                                        =========  ========
</TABLE>

13.  STOCKHOLDERS' EQUITY:

In accordance with accounting for a pooling-of-interests, all
prior period stockholders' equity accounts have been restated to
give effect to the IMA Merger described in Note 3.

Stock Option Plan

Under the 1992 Employee Stock Option Plan and Director Stock
Option Plan (the "Plans"), the Company may grant options to its
employees and directors not to exceed 1,000,000 and 500,000 shares
of common stock, respectively.  In January 1998, the Company's
Board of Directors approved an increase in such authorization to
1,850,000 and 1,000,000 shares, respectively, subject to
stockholder approval.  The plans are administered by the Board of
Directors which determines the timing of awards, individuals to be
granted awards, the number of options to be awarded and the price,
vesting schedule and other conditions of the options.  The
exercise price of each option typically equals the market price of
the Company's stock on the date of grant and, therefore, the
Company generally makes no charge to earnings with respect to
these options.  Options generally vest over a five year period and
have an expiration date of up to 10 years after grant.

Prior to the IMA Merger, IMA had granted options to certain
officers, directors and employees to acquire IMA Class A common
shares.  In connection with the IMA Merger, all outstanding IMA
options as of the date of the acquisition, became options to
purchase that number of shares of ITI Common Stock that would have

                              F-24<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

been received had the options been exercised prior to the IMA
Merger.  Dividends reflected in the statements of stockholders'
equity reflect those which had been declared on the IMA common
shares prior to the IMA Merger.

The Company applies APB Opinion No. 25, and related
interpretations in accounting for stock option grants. 
Accordingly, no compensation cost has been recognized in the
statements of operations for this stock option plan.  In
accordance with SFAS No. 123, the Company has estimated the fair
value of each option grant using the Black-Scholes option-pricing
model.  The following weighted average assumptions were used for
the grants in 1997, 1996 and 1995, respectively:  expected
volatility of 45%, 44% and 48%; risk-free interest rates of 5.8%,
6.1% and 6.2%; expected lives of five years and no dividends. Had
compensation cost for the stock options granted been determined
based on their fair value at the grant dates, the Company's net
income and earnings per share would have been reduced to the pro
forma amounts indicated below (in thousands, except per share
amounts):
<TABLE>
<CAPTION>
                                       1997    1996    1995
                                       ----    ----    ----
    <S>                                <C>     <C>     <C>
    Net income (loss):
     As reported                       $9,419  $4,492  $  (966)
     Pro forma                          8,867   4,116   (1,015)
    Basic and diluted earnings (loss)
     per share:
     As reported                          .35     .17     (.04)
     Pro forma                            .33     .15     (.04)
</TABLE>

Based on the Black-Scholes option-pricing model the weighted
average fair value of options granted in 1997, 1996 and 1995 was
$4.16, $3.84 and $5.91, respectively, for options granted at the
market price.  In 1996, for options granted above market price,
the fair value was $1.82.  The following table summarizes
information about options outstanding at December 31, 1997:

                              F-25<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
<TABLE>
<CAPTION>
                             Weighted
                  Number     Average     Weighted  Number      Weighted
Range of        Outstanding  Remaining   Average   Exercisable Average
Exercise        at December Contractual  Exercise  at December Exercise
 Prices          31, 1997      Life      Price       31, 1997  Price
- --------        ----------- ---------    --------  ----------- --------
<S>             <C>         <C>          <C>       <C>         <C>
$2.61 to $9.79    911,697   7.7 years    $  8.41   394,829     $  8.37
$11.09 to $16.25  866,605   2.3 years    $ 14.33   773,855     $ 14.40
$25.00             48,125      -         $ 25.00    48,125     $ 25.00
                  -------                          -------
                1,826,427   4.9 years    $ 11.66  1,216,809    $ 12.86
                =========                         =========
</TABLE>

Changes in options outstanding are summarized as follows:
<TABLE>
<CAPTION>
                                             Weighted
                                              Average
                                             Exercise
                             Shares            Price
                             ------          --------
<S>                          <C>             <C>
Balance, December 31, 1994   1,687,300       $14.80
 Granted                       398,210       $12.00
 Exercised                    (393,909)      $ 9.27
 Canceled                     (292,666)      $16.61
                             ---------
Balance, December 31, 1995   1,398,935       $13.00
 Granted                       325,000       $ 9.14
 Exercised                      (9,316)      $ 7.92
 Canceled                     (132,420)      $15.02
                             ---------
Balance, December 31, 1996   1,582,199       $11.37
 Granted                       568,900       $ 8.75
 Exercised                     (70,387)      $ 4.24
 Canceled                     (254,285)      $11.18
                             ---------
Balance, December 31, 1997   1,826,427       $11.66
                             =========
</TABLE>

                              F-26<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

In July 1993, the Company issued to Hanseatic Corporation warrants
to purchase 350,877 unregistered shares of Common Stock in
connection with the issuance of subordinated debt (see Note 11). 
The warrants are exercisable at $14.25 per share and expire on
July 26, 1998.  Paul Biddelman, a director of the Company, is an
officer of Hanseatic.

At December 31, 1997, 2,300,113 shares of Common Stock were
reserved pursuant to stock option plans and warrants.

14.  RELATED PARTY TRANSACTIONS:

On July 3, 1992, Ringwood Limited ("Ringwood"), and Douglas K.
Chick and Brian Chandler, both directors of the Company, entered
into an agreement whereby Ringwood executed to the Company a
secured, nonrecourse promissory note (the "Note") in the amount of
$3,624,000 which bore interest at Citibank's prime rate plus
2-1/2%, was originally due July 3, 1995, and was secured by a
pledge (the "Pledge") to the Company by Ringwood and Messrs. Chick
and Chandler of 255,801 shares (the "Shares") of the Company's
stock beneficially owned by them.

On May 21, 1995, the Company extended the maturity date of the
Note to July 3, 1996 (the "Maturity Date"), and in December 1995
the interest payment otherwise due in January 1996 was postponed
to be due on a date (the "Extension Date") no later than 30 days
after the date of first publication of the Company's operating
results covering at least a 30-day period after the consummation
of the IMA Merger.  At the Extension Date, Ringwood had defaulted
in the payment to the Company of its interest payment postponed as
aforesaid, and on the Maturity Date had defaulted in payment of
the principal amount of the Note.  Effective in August 1996, the
Company foreclosed on the Shares in full satisfaction of the
obligation of Ringwood and Messrs. Chick and Chandler under the
Note and the Pledge.  The amount of the Note plus accrued interest
to the date of foreclosure has been recorded in treasury stock.

Krugman Chapnick and Grimshaw LLP provides legal services to the
Company.  The Company paid Krugman Chapnick and Grimshaw LLP,
$664,000, $815,000 and $1,766,000 in 1997, 1996 and 1995,
respectively, for legal services provided, together with
reimbursement of out-of-pocket expenses of $141,000, $151,000 and
$248,000, respectively.  James D. Krugman, a partner at Krugman
Chapnick and Grimshaw LLP, was a director of the Company prior to
October 1997.

                              F-27<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

15.  OTHER INCOME (EXPENSE):

Other income (expense) is comprised of the following at December
31 (in thousands):
<TABLE>
<CAPTION>
                                       1997    1996    1995
                                       ----    ----    ----
    <S>                                <C>     <C>     <C>
    Investment income                  $ 1,842 $ 1,059 $ 1,177
    Litigation settlement (Note 17)       -       -     (3,547)
    Casualty gain                         -       -        722
    Reserve for excess equipment          (722)   -       -
    Other                                 (473)    231     (79)
                                       ------- ------- -------
                                       $   647 $ 1,290 $(1,727)
                                       ======= ======= =======
</TABLE>

16. TAXES ON INCOME:

Net deferred tax assets consist of the following at December 31 (in
thousands):
<TABLE>
<CAPTION>
                                       1997            1996
                                       ----            ----
    <S>                                <C>             <C>
    DEFERRED INCOME TAX ASSETS:
     Net operating loss carryforwards  $ 5,276         $ 5,527
     Foreign tax credit carryforwards    -                 828
     Accrued compensation                1,570           1,005
     Inventory valuation                   675             752
     Accrual for pending litigation
      and claims                           159             356
     Restructuring provision             1,056           2,580
     Accrued contingencies               1,545             236
     Allowance for doubtful accounts       609              50
     Accrued losses on incomplete
      contracts                            362            -
     other                                 991             821
                                       -------         -------
    Gross deferred income tax assets    12,243          12,155

    VALUATION ALLOWANCE                 (3,266)         (3,056)
                                       -------         -------
    Total deferred income tax assets     8,977           9,099
                                       -------         -------
</TABLE>
                                F-28<PAGE>
<PAGE>
           INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
<TABLE>
<CAPTION>
                                       1997            1996
                                       ----            ----
    <S>                                <C>             <C>
    DEFERRED INCOME TAX LIABILITIES:
     Depreciation                       (4,041)         (4,219)
     Patent defense cost                (1,643)           (905)
     Other                              (1,112)         (1,024)
                                       -------         -------
    Total deferred income tax
     liabilities                        (6,796)         (6,148)
                                       -------         -------
    Net deferred income tax assets     $ 2,181         $ 2,951
                                       =======         =======
</TABLE>

The Company has recorded deferred tax assets of $2,181,000
reflecting the benefit of $5,276,000 in loss carryforwards. 
Realization is dependent upon generating sufficient taxable income
in the applicable jurisdictions and, in some instances, prior to
the expiration of the carryforwards.  Although realization is not
assured, management believes it is more likely than not that all
of the deferred tax assets will be realized.  The amount of the
deferred tax asset considered realizable, however, could be
reduced in the near term if estimates of future taxable income
during the carryforward periods, as applicable are reduced.

Income (loss) from continuing operations before taxes on income is
as follows for the years ended December 31 (in thousands):

<TABLE>
<CAPTION>
                                       1997    1996    1995
                                       ----    ----    ----
    <S>                                <C>     <C>     <C>
    Domestic                           $ 9,432 $10,182 $ 1,897
    Foreign                              7,495    (769)  1,733
                                       ------- ------- -------
    Totals                             $16,927 $ 9,413 $ 3,630
                                       ======= ======= =======
</TABLE>

Provisions for taxes on income from continuing operations consist
of the following components for the years ended December 31 (in
thousands):

                              F-29<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
                                       1997    1996    1995
                                       ----    ----    ----
    <S>                                <C>     <C>     <C>
    Current:
     Federal                           $ 2,498 $ 2,968 $ 1,225
     Foreign                               280   1,708   2,154
     State                               3,519     735     827
                                       ------- ------- -------
                                         6,297   5,411   4,206
                                       ------- ------- -------
    Current tax benefit related to
     exercise of stock options            -       -        530
                                       ------- ------- -------
    Deferred:
     Federal                               900   1,334    (622)
     Foreign                              (302)   (569)    (54)
     State                                 172    (243)    (73)
    Adjustments to beginning of year
     valuation allowance                  -       (948)    -
                                       ------- ------- -------
                                           770    (426)   (749)
                                       ------- ------- -------
    Total taxes on income              $ 7,067 $ 4,985 $ 3,987
                                       ======= ======= =======
</TABLE>

A reconciliation between the U.S. federal statutory tax rate and the
effective tax rate follows:
<TABLE>
<CAPTION>
                                       1997    1996    1995
                                       ----    ----    ----
    <S>                                <C>     <C>     <C>
    Income taxes at U.S. federal
     statutory tax rate                34.0%   34.0%   34.0%
    Increase (decrease) in taxes
     resulting from:
     State income taxes, net of federal
      income tax benefit                1.1     2.6    13.7
     Tax amortization of intangibles   (4.7)   (8.4)   (21.5)
     Tax benefit not currently recognizable
      on losses of subsidiaries          -       -     10.0
     Merger costs capitalized for tax
      purposes                           -       -     59.1
     Goodwill amortization              3.2     8.2    18.3
     Effect of foreign income taxed at
      foreign rates                     3.0     7.4    (4.4)
     Other                              5.1     9.2     0.6
                                       ----    ----    ----
    Total taxes on income              41.7%   53.0%   109.8%
                                       ====    ====    =====
</TABLE>

                              F-30<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Subject to the future taxable income on certain of the Company's
subsidiaries, the Company has available tax operating loss
carryforwards as follows:
<TABLE>
<CAPTION>
                                                       Expiration
Jurisdiction                           Amount             Date
- ------------                           ------          ----------
                                  (in thousands)
<S>                                    <C>             <C>
United Kingdom                         $10,843         Indefinite
France                                     254         2001-2002
Puerto Rico                              1,779         2000-2003
U.S. State                              11,967         2004-2010
U.S. Federal                             2,924         2001-2011
</TABLE>

17. COMMITMENTS AND CONTINGENCIES:

Leases

The Company leases a number of its administrative operations
facilities under noncancellable operating leases expiring at
various dates through 2020.  In addition, the Company also leases
certain construction and automotive equipment on a multiyear,
monthly or daily basis.  Rent expense under all operating leases
for 1997, 1996 and 1995 was $9,960,000, $8,837,000 and $6,000,000,
respectively.

At December 31, 1997, the future minimum lease payments required
under the noncancellable operating leases were as follows (in
thousands):
<TABLE>
<CAPTION>
    Year Ending December 31            Minimum Lease Payments
    1998                               $ 3,079
    1999                                 2,264
    2000                                 1,419
    2001                                   807
    2002                                   520         
    After 2002                             840         
                                       ---------
                    Total              $ 8,929
                                       =======

Minimum payments have not been reduced by minimum sublease rentals
of $635,000 due in the future under noncancelable subleases.

                              F-31<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Employment Agreements

The Company and certain of its subsidiaries have employment
contracts with various officers with remaining terms ranging from
six months to three years at amounts approximating their current
levels of compensation.  The Company's minimum aggregate
commitment at December 31, 1997, under such contracts was
approximately $2,791,000.

On June 19, 1997, the Company entered into severance agreements
with Anthony W. Hooper, William A. Martin and Robert L. Kelley
which provide that, subsequent to the occurrence of specified
events during a period of three years after the date of such
agreements, if the employment of such officer is terminated
without "cause" or such officer resigns with "good reason" (as
those terms are defined under such agreements), or such officer
resigns for any reason during a 30-day period following the
anniversary of the specified events, such officer is entitled to
the benefits set forth in the agreement.  The election of two
members of the Board of Directors in October 1997 outside of the
procedure provided under the Company's merger agreement with IMA
was one of the specified events.  The benefits to which each
officer would be entitled upon severance from the Company as
aforesaid include an amount, payable within 30 days after
severance, equal to three times compensation (including base
salary and bonus, as defined, and accrued retirement benefits)
plus amounts to cover any excise tax due, if any, and coverage for
a period of three years under the Company's welfare plans (or
equivalent coverage).


Litigation

On May 23, 1995, the Company, notwithstanding its belief that it
had defenses to plaintiff's claim that were well grounded in fact
and law, settled a stockholder class action against the Company
arising from the acquisition of Insituform Group Limited in
December 1992.  The Company made a cash payment to class members
in the amount of $3.2 million and (in January 1996) issued to
class members 30,000 shares of the Company's class  A common
stock.

The Company is involved in certain additional litigation
incidental to the conduct of its business.  In the Company's
opinion, none of these proceedings will have a material adverse
effect on the Company's financial position, results of operations
and liquidity.  The financial statements include the estimated
amounts of liabilities that are likely to be incurred from these
and various other pending litigation and claims.

                              F-32<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Retirement Plans

The Company maintains profit sharing/401(k) plans which cover
substantially all eligible domestic employees.  Company profit
sharing contributions are discretionary.  Under the terms of its
401(k) features, the plan also provides for the Company to
contribute 100% of the participating employee's contribution up to
3% of the employee's salary, and 50% of the next 2% of the
employee's salary.  Total contributions to the domestic plans were
$2,496,000, $2,447,000 and $1,401,000 for the years ended
December 31, 1997, 1996 and 1995, respectively.

In addition, certain foreign subsidiaries maintain various other
defined contribution retirement plans.  Company contributions to
such plans for the years ended December 31, 1997, 1996 and 1995,
were $132,000, $107,000 and $136,000, respectively.

18. SEGMENT AND GEOGRAPHIC INFORMATION:

The Company's continuing operations include the following
reportable segments:

"Pipeline Technology" - includes licensing, selling and servicing
trenchless, on-site pipeline reconstruction technology and
products.

"Construction" - includes the installation of trenchless pipeline
reconstruction materials as well as nontrenchless pipeline
construction.

Operating profit (loss) by business segment and by geographic area
are defined as revenues less operating costs and expenses.  Income
and expense not allocated to business segments or geographic areas
include investment income and corporate expenses.

Identifiable assets are those assets used exclusively in the
operations of each business segment or geographic area, or which
are allocated, when used jointly.  Corporate assets are
principally comprised of cash equivalents and investments.

Financial information by industry segment is as follows at
December 31 (in thousands):

                              F-33<PAGE>
<PAGE>
         INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
<CAPTION>
                                          1997       1996     1995
                                        -------    -------  -------
                                             (In thousands, except
                                               per share amounts)
<S>                                     <C>        <C>      <C>
PIPELINE TECHNOLOGY:
 Revenues-
  Unaffiliated companies                $ 25,730   $ 21,735 $ 25,299
  Intersegment                            45,235     51,420   45,582
                                        --------   -------- --------
      Total revenues                      70,965     73,155   70,881
                                        --------   -------- --------
 Operating income                         13,099     18,428   16,642
 Identifiable assets                      35,960     25,494   29,699
 Capital expenditures                        754      2,133      750
 Depreciation and amortization             1,828      1,628    1,569

CONSTRUCTION:
 Revenues                               $294,910   $268,198 $246,904
 Operating income                         25,222      7,908    5,479
 Identifiable assets                     218,517    218,096  211,543
 Capital expenditures                     15,618     15,881   15,557
 Depreciation and amortization            16,945     17,141   14,961

ELIMINATIONS AND CORPORATE ITEMS:
 Revenues                               $(45,235)  $(51,420)$(45,582)
 Operating loss                          (13,291)   (11,990) (10,371)
 Identifiable assets                      43,375     21,912   19,058
 Capital expenditures                        180        173      190
 Depreciation and amortization               467        411      269

CONSOLIDATED:
 Revenues                               $320,640   $289,933 $272,203
 Operating income                         25,030     14,346   11,750
 Identifiable assets                     297,852    265,502  260,300
 Capital expenditures                     16,552     18,187   16,497
 Depreciation and amortization            19,240     19,180   16,799

Financial information by geographic area is as follows at 
December 31 (in thousands):
                                          1997       1996     1995
                                        -------    -------  -------
UNITED STATES:
 Revenues-
  Unaffiliated companies                $227,900   $220,848 $202,555
  Between geographic areas                37,515     43,986   40,243
                                        --------   -------- --------
       Total revenues                    265,415    264,834  242,798
                                        --------   -------- --------
 Operating income                         26,965     19,291   11,055
 Identifiable assets                     231,212    204,598  202,165


                                F-34<PAGE>
<PAGE>
           INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
<CAPTION>
                                          1997       1996     1995
                                        -------    -------  -------
                                             (In thousands, except
                                               per share amounts)
<S>                                     <C>        <C>      <C>
EUROPEAN COMMUNITY:
 Revenues-
  Unaffiliated companies                $ 31,226   $ 32,934 $ 21,566
  Between geographic areas                 4,928      4,516    2,325
                                        --------   -------- --------
      Total revenues                      36,154     37,450   23,891
                                        --------   -------- --------
 Operating income                          2,738      4,018    8,253
 Identifiable assets                      26,109     29,533   20,959

CANADA:
 Revenues-
  Unaffiliated companies                $ 23,386   $ 16,955 $ 28,620
  Between geographic areas                 1,338      1,305    1,617
                                        --------   -------- --------
      Total revenues                      24,724     18,260   30,237
                                        --------   -------- --------
 Operating income                          5,521      2,179    1,674
 Identifiable assets                      20,179     18,541   21,233

OTHER FOREIGN:
 Revenues-
  Unaffiliated companies                $ 38,128   $ 19,196 $ 19,462
  Between geographic areas                 1,536      1,613    1,397
                                        --------   -------- --------
      Total revenues                      39,664     20,809   20,859
                                        --------   -------- --------
 Operating income (loss)                   3,097        848      430
 Identifiable assets                      16,074     10,155    8,968

ELIMINATIONS AND CORPORATE ITEMS:
 Revenues-
  Between geographic areas              $(45,317)  $(51,420)$(45,582)
  Operating loss                         (13,291)   (11,990)  (9,662)
  Identifiable assets                      4,278      2,675    6,975

CONSOLIDATED:
 Revenues                               $320,640   $289,933 $272,203
 Operating income                         25,030     14,346   11,750
 Identifiable assets                     297,852    265,502  260,300
</TABLE>


                                F-35<PAGE>
<PAGE>
           INSITUFORM TECHNOLOGIES, INC. AND SUBSIDIARIES

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

19.  SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED):
<TABLE>
<CAPTION>
                                   1st      2nd      3rd      4th
                                   ---      ---      ---      ---
                                     (In thousands, except per
                                              share data)
<S>                                <C>      <C>      <C>      <C>
Year ended December 31, 1997:
 Revenues                          $77,082  $75,316  $85,490  $82,752
 Operating income                    4,050    2,513    9,666    8,801(a)
 Income before extraordinary item    1,306      214    4,282    3,842
 Extraordinary loss                   (225)    -         -        -
 Net income                          1,081      214    4,282    3,842(a)
 Basic and diluted earnings (loss)
  per share:
  Income before extraordinary item     .05      .01      .16      .14
  Extraordinary loss                  (.01)    -          -       -
  Net income                           .04      .01      .16      .14

Year ended December 31, 1996:
 Revenues                          $68,110  $71,769  $70,647  $79,407
 Operating income (loss)             5,180    7,489    6,625   (4,948)(a)
 Net income (loss)                   2,250    3,830    3,416   (5,004)(a)
 Basic and diluted earnings (loss)
  per share                            .08      .14      .13     (.19)



(a) See Note 4 for information relative to unusual charges recorded in 1997
and 1996.















                                  F-36
</TABLE>
<PAGE>
<PAGE>
                     INDEX TO EXHIBITS(1)(2)

3.1   -  Certificate of Incorporation of the
          Company (Incorporated by reference to 
          Exhibit 3(a) to the Quarterly Report
          on Form 10-Q for the quarter ended
          September 30, 1997).

3.2   -  By-Laws of the Company (Incorporated
          by reference to Exhibit 3(b) to the
         Quarterly Report on Form 10-Q for the
          quarter ended September 30, 1997).

10.1  -  Agreement and Plan of Merger dated as of
          May 23, 1995 among the Company, ITI
          Acquisition Corp. and Insituform Mid-
          America, Inc. (Incorporated by reference
          to Exhibit 5(a) to the Current Report on
          Form 8-K dated May 23, 1995).

10.2  -  Merger Agreement dated as of November 2, 
          1994 by and among Insituform Mid-America,
          Inc., IMA Merger Sub, Inc., Enviroq
          Corporation and New Enviroq Corporation
          (Incorporated by reference to Exhibit 10(a)
          to the Quarterly Report on Form 10-Q for
          the quarter ended September 30, 1995).





____________________
1    The Company's current, quarterly and annual reports are filed
     with the Securities and Exchange Commission under file no. 0-
     10786

2    Pursuant to Reg. Section 229.601, does not include certain
     instruments with respect to long-term debt of the Company and
     its consolidated subsidiaries not exceeding 10% of the total
     assets of the Company and its subsidiaries on a consolidated
     basis. The Company undertakes to furnish to the Securities and
     Exchange Commission, upon request, a copy of all long-term
     debt instruments not filed herewith.







                               E-1<PAGE>
<PAGE>
                     INDEX TO EXHIBITS(1)(2)

10.3  -  Note Purchase Agreements dated as of
          February 14, 1997 among the Company
          and, respectively, each of the lenders
          listed therein (Incorporated by reference
          to Exhibit 10.6 to the Annual Report on
          Form 10-K for the year ended December 31,
          1996), together with First Amendment
          dated as of August 20, 1997, Guaranty
          Agreement dated as of August 20, 1997
          by each of the subsidiaries named
          therein, and Intercreditor Agreement dated
          as of August 20, 1997 among NationsBank,
          N.A. and such lenders (Incorporated by
          reference to Exhibit 10(a) to the Quarterly
          Report on Form 10-Q for the quarter ended
          September 30, 1997).

10.4  -  Loan Agreement dated as of August 20, 1997
          between NationsBank, N.A. and the Company
          together with Unlimited Guaranty dated as
          of August 20, 1997 by each of the subsidiaries
          named therein and Contribution Agreement dated
          August 20, 1997 between NationsBank, N.A.
          and such guarantors (Incorporated by reference
          to Exhibit 10(b) to the Quarterly Report on
          Form 10-Q for the quarter ended September 30,
          1997).

10.5  -  Amendment No. 1 to Loan Agreement dated as of
          August 20, 1997 between NationsBank, N.A. and
          the Company.



____________________
1    The Company's current, quarterly and annual reports are filed
     with the Securities and Exchange Commission under file no. 0-
     10786

2    Pursuant to Reg. Section 229.601, does not include certain
     instruments with respect to long-term debt of the Company and
     its consolidated subsidiaries not exceeding 10% of the total
     assets of the Company and its subsidiaries on a consolidated
     basis. The Company undertakes to furnish to the Securities and
     Exchange Commission, upon request, a copy of all long-term
     debt instruments not filed herewith.




                               E-2<PAGE>
<PAGE>
               INDEX TO EXHIBITS(1)(2)

10.6  -  Agreement dated July 25, 1997 among Jerome
          Kalishman, Nancy F. Kalishman, Robert W.
          Affholder, Xanadu Investments L.P., The
          Jerome and Nancy Kalishman Family Fund,
          Paul A. Biddelman, Stephen P. Cortinovis,
          Anthony W. Hooper, Silas Spengler, Sheldon
          Weinig and Russell B. Wight, Jr. (Incorporated
          by reference to Exhibit 99.1 to the Current
          Report on Form 8-K dated July 25, 1997),
          together with Amendment No. 1 thereto (Incor-
          porated by reference to Exhibit 10(d) to the
          Quarterly Report on Form 10-Q for the quarter
          ended September 30, 1997).

10.7  -  Letter Agreement dated November 18, 1996
          between the Company and Anthony W.
          Hooper (Incorporated by reference to
          Exhibit 10.13 to the Annual Report on
          Form 10-K for the year ended December
          31, 1996).

10.8  -  Severance Agreement dated as of June 19,
          1997 between the Company and Anthony W.
          Hooper (Incorporated by reference to
          Exhibit 10(a) to the Quarterly Report
          on Form 10-Q for the quarter ended
          June 30, 1997).(3)




_________________

1    The Company's current, quarterly and annual reports are filed
     with the Securities and Exchange Commission under file no. 0-
     10786

2    Pursuant to Reg. Section 229.601, does not include certain
     instruments with respect to long-term debt of the Company and
     its consolidated subsidiaries not exceeding 10% of the total
     assets of the Company and its subsidiaries on a consolidated
     basis. The Company undertakes to furnish to the Securities and
     Exchange Commission, upon request, a copy of all long-term
     debt instruments not filed herewith.

3    Management contract or compensatory plan or arrangement.





                               E-3<PAGE>
<PAGE>
                     INDEX TO EXHIBITS(1)(2)

10.9  -  Agreement dated October 25, 1995 between
          the Company and Jerome Kalishman
          (Incorporated by reference to Exhibit
          2(b) to the Current Report on Form 8-K
          dated October 25, 1995), together with
          Amendment dated November 18, 1996 (In- 
          corporated by reference to Exhibit 10.11
          to the Annual Report on Form 10-K for
          the year ended December 31, 1996) and
          Amendment No. 2 dated October 8, 1997
          (Incorporated by reference to the
          Quarterly Report on Form 10-Q for the
          quarter dated September 30, 1997).(3)
10.10 -  Consulting Agreement dated October 25, 
          1995 between the Company and Jerome 
          Kalishman (Incorporated by reference to 
          Exhibit 2(c) to the Current Report on 
          Form 8-K dated October 25, 1995).(3)

10.11 -  Employment Agreement dated October 25,
          1995 between the Company and Robert
          W. Affholder (Incorporated by reference
          to Exhibit 2(d) to the Current Report
          on Form 8-K dated October 25, 1995).(3)

10.12 -  Severance Agreement dated as of June 19,
          1997 between the Company and William A.
          Martin (Incorporated by reference to
          Exhibit 10(b) to the Quarterly Report
          on Form 10-Q for the period ended
          June 30, 1997).(1)



_________________

1    The Company's current, quarterly and annual reports are filed
     with the Securities and Exchange Commission under file no. 0-
     10786

2    Pursuant to Reg. Section 229.601, does not include certain
     instruments with respect to long-term debt of the Company and
     its consolidated subsidiaries not exceeding 10% of the total
     assets of the Company and its subsidiaries on a consolidated
     basis. The Company undertakes to furnish to the Securities and
     Exchange Commission, upon request, a copy of all long-term
     debt instruments not filed herewith.

3    Management contract or compensatory plan or arrangement.

                               E-4

<PAGE>
<PAGE>
                     INDEX TO EXHIBITS(1)(2)

10.13 -  Severance Agreement dated as of June 19,
          1997 between the Company and Robert L.
          Kelley (Incorporated by reference to
          Exhibit 10(c) to the Quarterly Report
          on Form 10-Q for the period ended
          June 30, 1997).(3)

10.14 -  Registration Rights Agreement dated as 
          of October 19, 1992, among the Company, 
          Interstate Properties, and the Ringwood 
          Group consisting of Parkwood Limited, 
          as trustee of the Anthony Basmadjian 
          "P" Settlement, Barford, as trustee of 
          the Anthony Basmadjian Settlement, 
          Ringwood Limited, Brian Chandler and 
          Douglas K. Chick (Incorporated by 
          reference to Exhibit 10.54 of Registra-
          tion Statement on Form S-4 No. 33-53772).

10.15 -  Registration Rights Agreement dated as of
          September 1, 1995 among the Company,
          Xanadu Investments L.P. and Robert W.
          Affholder (Incorporated by reference to
          Exhibit 10.29 of Registration Statement
          on Form S-4 No. 33-62677).

10.16 -  Equipment Lease dated as of October 10,
          1989 between A-Y-K-E Partnership and
          Affholder, Inc. (Incorporated by reference
          to Exhibit 10.20 to the Annual Report on
          Form 10-K for the year ended December 31,
          1995).
_________________
1    The Company's current, quarterly and annual reports are filed
     with the Securities and Exchange Commission under file no. 0-
     10786

2    Pursuant to Reg. Section 229.601, does not include certain
     instruments with respect to long-term debt of the Company and
     its consolidated subsidiaries not exceeding 10% of the total
     assets of the Company and its subsidiaries on a consolidated
     basis. The Company undertakes to furnish to the Securities and
     Exchange Commission, upon request, a copy of all long-term
     debt instruments not filed herewith.

3    Management contract or compensatory plan or arrangement.






                               E-5<PAGE>
<PAGE>
                     INDEX TO EXHIBITS(1)(2)

10.17 -  1992 Employee Stock Option Plan of the 
          Company.(1)

10.18 -  1992 Director Stock Option Plan of the 
          Company.(3)

10.19 -  Insituform Mid-America, Inc. Stock Option
          Plan, as amended (Incorporated by reference
          to Exhibit 4(i) to the Registration
          Statement on Form S-8 No. 33-63953).(3)

10.20 -  Form of Directors' Indemnification 
          Agreement (Incorporated by reference 
          to Exhibit 10.47 to the Annual Report 
          on Form 10-K for the year ended
          December 31, 1988).(1)

21    -  Subsidiaries of the Company.

23.1  -  Consent of Arthur Andersen LLP.

23.2  -  Consent of BDO Seidman, LLP.

24   -   Power of Attorney (See "Power of 
          Attorney" in the Annual Report on 
          Form 10-K).

27   -   Financial Data Schedule, which is
          submitted electronically to the
          Securities and Exchange Commission
          for information only and not filed.

99    -  Pages 6 through 9 of the Company's Proxy
          Statement dated August 25, 1997 (In-
          corporated by reference to Exhibit 99
          to the Quarterly Report on Form 10-Q
          for the quarter ended September 30, 1997).
________________
1    The Company's current, quarterly and annual reports are filed
     with the Securities and Exchange Commission under file no. 0-
     10786

2    Pursuant to Reg. Section 229.601, does not include certain
     instruments with respect to long-term debt of the Company and
     its consolidated subsidiaries not exceeding 10% of the total
     assets of the Company and its subsidiaries on a consolidated
     basis. The Company undertakes to furnish to the Securities and
     Exchange Commission, upon request, a copy of all long-term
     debt instruments not filed herewith.

3    Management contract or compensatory plan or arrangement.

                               E-6

                                                     Exhibit 10.5
                      AMENDMENT NUMBER ONE
                               TO
                         LOAN AGREEMENT
                    Effective August 20, 1997
                         by and between
                        NATIONSBANK, N.A.
                               and
                  INSITUFORM TECHNOLOGIES, INC.

In consideration of their mutual agreements herein and for other
sufficient consideration, the receipt of which is hereby
acknowledged, INSITUFORM TECHNOLOGIES, INC. ("Borrower") and
NATIONSBANK, N.A. ("Lender") agree as follows:

1.   Definitions; Section References. The term "Original Loan
Agreement" means the Loan Agreement Effective August 20, 1997,
between Borrower and Lender. The term "this Amendment" means this
Amendment. The term "Loan Agreement" means the Original Loan
Agreement as amended by this Amendment. Capitalized terms used and
not otherwise defined herein have the meanings defined in the Loan
Agreement.

2.   Effective Date of this Amendment. This Amendment will be
effective as of August 20, 1997, and is intended to correct a
scrivener's error in the Original Loan Agreement.

3.   Amendments to Loan Agreement. Section 17.4 of the Original
Loan Agreement is amended to read in its entirety as follows:

     "17.4  Maximum Funded Debt to EBITDA Ratio. The ratio of
     Borrower's Funded Debt as of the end of any fiscal
     quarter of Borrower to Borrower's EBITDA for the four
     consecutive fiscal quarters then ended shall not be
     greater than 3.5 to 1.0."

4.   Effect of Amendment. The execution, delivery and effectiveness
of this Amendment shall not operate as a waiver of any right, power
or remedy of Lender under the Loan Agreement or any of the other
Loan Documents, nor constitute a waiver of any provision of the
Loan Agreement, any of the other Loan Documents or any Existing
Default. Each reference in the Loan Agreement to "the Agreement",
"hereunder", "hereof", "herein", or words of like import, shall be
read as referring to the Loan Agreement as amended hereby.

5.   Reaffirmation. Borrower hereby acknowledges and confirms that
except as expressly amended hereby the Original Loan Agreement and
other Loan Documents remain in full force and effect.

6.   Counterparts. This Amendment may be executed by the parties
hereto on any number of separate counterparts, and all such
counterparts taken together shall constitute one and the same
instrument. It shall not be necessary in making proof of this
Amendment to produce or account for more than one counterpart
signed by the party to be charged.
<PAGE>
<PAGE>
7.   Counterpart Facsimile Execution. This Amendment, or a
signature page thereto intended to be attached to a copy of this
Amendment, signed and transmitted by facsimile machine or
telecopier shall be deemed and treated as an original document. The
signature of any person thereon, for purposes hereof, is to be
considered as an original signature, and the document transmitted
is to be considered to have the same binding effect as an original
signature on an original document. At the request of any party
hereto, any facsimile or telecopy document is to be re-executed in
original form by the Persons who executed the facsimile or telecopy
document. No party hereto may raise the use of a facsimile machine
or telecopier or the fact that any signature was transmitted
through the use of a facsimile or telecopier machine as a defense
to the enforcement of this Amendment.

8.   Governing Law; No Third party Rights. This Amendment and the
rights and obligations of the parties hereunder shall be governed
by and construed and interpreted in accordance with the internal
laws of the State of Missouri applicable to contracts made and to
be performed wholly within such state, without regard to choice or
conflict of laws provisions.

9.   Incorporation by Reference. Lender and Borrower hereby agree
that all of the terms of the Loan Documents are incorporated in and
made a part of this Amendment by this reference.

10.  Statutory Notice. The following notice is given pursuant to
Section 432.045 of the Missouri Revised Statutes; nothing contained
in such notice will be deemed to limit or modify the terms of the
Loan Documents or this Amendment.

     ORAL AGREEMENTS OR COMMITMENTS TO LOAN MONEY, EXTEND
     CREDIT OR TO FORBEAR FROM ENFORCING REPAYMENT OF A DEBT
     INCLUDING PROMISES TO EXTEND OR RENEW SUCH DEBT ARE NOT
     ENFORCEABLE. TO PROTECT YOU (BORROWER(S)) AND US
     (CREDITOR) FROM MISUNDERSTANDING OR DISAPPOINTMENT, ANY
     AGREEMENTS WE REACH COVERING SUCH MATTERS ARE CONTAINED
     INT HIS WRITING, WHICH IS THE COMPLETE AND EXCLUSIVE
     STATEMENT OF THE AGREEMENT BETWEEN US, EXCEPT AS WE MAY
     LATER AGREE IN WRITING TO MODIFY IT.

     IN WITNESS WHEREOF, the parties have caused this Agreement to
be executed by appropriate duly authorized officers as of the
effective date first above written.

INSITUFORM TECHNOLOGIES, INC.      NATIONSBANK, N.A.
by its Senior Vice President       by its Vice President

s/William A. Martin                s/Emil A. Krueger
- ------------------------------     -----------------------------
Name:                              Name:




                                                    Exhibit 10.17
                  INSITUFORM TECHNOLOGIES, INC.

                 1992 EMPLOYEE STOCK OPTION PLAN

          1.   Purposes of Plan.  The purposes of this Plan, which
shall be known as the Insituform Technologies, Inc. 1992 Employee
Stock Option Plan, and is hereinafter referred to as the "Plan",
are (i) to provide incentives for key employees of Insituform
Technologies, Inc. (the "Company") and any parent and subsidiary
corporations (within the respective meanings of Sections 424(e) and
424(f) of the Internal Revenue Code of 1986, as amended (the
"Code"), and referred to herein as "Parent" and "Subsidiary,"
respectively), and to consultants and other individuals providing
services to such companies, by encouraging their ownership of the
class A common stock, $.01 par value (the "Common Stock"), of the
Company, and (ii) to aid the Company in retaining such key
employees and other persons, upon whose efforts the Company's
success and future growth depends, and attracting other such
employees and other persons.

          2.   Administration.  The Plan shall be administered by
the Board of Directors of the Company or, as determined by the
Board of Directors in its sole discretion, by a committee from time
to time appointed by the Board of Directors and consisting of not
less than two of its members (the Board of Directors, or such
committee, for purposes of this Plan hereinafter referred to as the
"Committee"), as hereinafter provided. Subject to the terms of the
Plan, the Committee shall have plenary authority to determine the
key employees, consultants and other individuals to whom options
are to be granted under the Plan, the number of shares to be
subject to each such option, the terms and conditions upon which
the options are granted and are exercisable and whether such
options will be incentive stock options or non-qualified stock
options. For purposes of administration, the Committee, subject to
the terms of the Plan, shall have plenary authority to establish
such rules and regulations, make such determinations and
interpretations and take such other administrative actions as it
deems necessary or advisable.  All determinations and
interpretations made by the Committee shall be final, conclusive
and binding on all persons, including Optionees (as hereinafter
defined) and their legal representatives and beneficiaries.  

          The Board of Directors shall designate one of the members
of the Committee as its Chairman.  The Committee shall hold its
meetings at such times and at such places as it may determine.  A
majority of its members shall constitute a quorum.  All
determinations of the Committee shall be made by a majority of its
members.  Any decision or determination reduced to writing and
signed by all members shall be as effective as if it had been made
by a majority vote at a meeting duly called and held.  The
Committee may appoint a secretary (who need not be a member of the
Committee).  No member of the Committee shall be liable for any act
or omission with respect to his service on the Committee if he acts

<PAGE>
in good faith and in a manner he reasonably believes to be in or
not opposed to the best interests of the Company.  Service on the
Committee shall constitute service as a director of the Company for
all purposes.

          The Committee may, in its sole discretion, authorize the
Non-Insider Stock Option Committee (the "Non-Insider Committee") of
the Board of Directors to determine the key employees, consultants
and other individuals to whom options otherwise authorized by the
Committee are to be granted, in each case subject to the terms of
the Plan and such authorization by the Committee and insofar as
such optionees do not constitute "officers", for purposes of
Section 16 of the Securities and Exchange Act of 1934; and, in the
event the Non-Insider Committee does not determine such
individuals, shares of Common Stock otherwise covered by options
authorized by the Committee and submitted to the Non-Insider Stock
Option Committee shall be available for further options hereunder.

          The Non-Insider Committee shall be appointed from time to
time by the Board of Directors and shall consist of one or more of
its members, who need not be members of the Committee.  The Non-
Insider Committee shall hold its meetings at such times and at such
places as it may determine.  A majority of its members shall
constitute a quorum.  All determinations made by the Non-Insider
Committee shall be made by a majority of its members.  Any decision
or determination reduced to writing and signed by all members shall
be effective as if it had been made by a majority vote at a meeting
duly called and held.  The Non-Insider Committee may appoint a
Secretary (who need not be a member of the Committee).  No member
of the Non-Insider Committee shall be liable for any act or
omission with respect to his service on the Committee if he acts in
good faith and in a manner he reasonably believes to be in or not
opposed to the best interests of the Company.  Service on the Non-
Insider Committee shall constitute service as a director of the
Company for all purposes.

          3.   Stock Available for Options.  There shall be 
available for options under the Plan the total of 1,850,000 shares
of Common Stock, subject to any adjustments which may be made
pursuant to Section 5(f) hereof.*  Shares of Common Stock used for
purposes of the Plan may be either authorized and unissued shares,
or previously issued shares held in the treasury of the Company, or
both.  Shares of Common Stock covered by options which have
terminated or expired prior to exercise shall be available for
further options hereunder.  

          4.   Eligibility.  Options under the Plan may be granted
to key employees of the Company or any Parent or Subsidiary 
_______________
*    Increase from 1,000,000 to 1,850,000 subject to stockholder
     approval.

<PAGE>
thereof, including officers of the Company or any Parent or
Subsidiary thereof, and to consultants and other individuals
providing services to the Company or any Parent or Subsidiary.
Options may not be granted under the Plan to any member of the
Board of Directors of the Company (whether or not a key employee
of, or a consultant or other individual providing services to, the
Company or any Parent or Subsidiary).  Options may be granted to
eligible individuals whether or not they hold or have held options
previously granted under the Plan or otherwise granted or assumed
by the Company.  In selecting individuals for options, the
Committee (with reference to any action of the Non-Insider
Committee, if and to the extent authorized pursuant to Section 2)
may take into consideration any factors it may deem relevant,
including its estimate of the individual's present and potential
contributions to the success of the Company and/or any Parent or
Subsidiary thereof.  Service as a consultant of or to the Company
or any Parent or Subsidiary shall be considered employment for
purposes of the Plan (and the period of such service shall be
considered the period of employment for purposes of Section 5(d) of
the Plan); provided, however, that incentive stock options may be
granted under the Plan only to an individual who is an "employee"
(as such term is used in Section 422 of the Code) of the Company or
any Subsidiary or Parent.     

          5.   Terms and Conditions of Options.  The Committee
(with reference to any action of the Non-Insider Committee, if and
to the extent authorized pursuant to Section 2) shall, in its
discretion, prescribe the terms and conditions of  the options to
be granted hereunder which terms and conditions  need not be the
same in each case, subject to the following:  

               (a)    Option Price.  The price at which each share
of Common Stock covered by an option granted under the Plan may be
purchased shall be determined by the Committee (with reference to
any action of the Non-Insider Committee, if and to the extent
authorized pursuant to Section 2) and shall not be less than the
lesser of (i) the tangible book value per share of Common Stock,
determined in accordance with generally accepted accounting
principles, as of the end of the fiscal quarter of the Company
immediately preceding the fiscal quarter in which the option is
granted, or (ii) the market value per share of Common Stock on the
date of grant of an option as determined pursuant to Section 5(c). 
The date of the grant of an option shall be the date specified by
the Committee (with reference to any action of the Non-Insider
Committee, if and to the extent authorized pursuant to Section 2)
in its grant of the option.  

               (b)    Option Period.  The period for exercise of an
option shall in no event be more than ten years from the date of
grant. Options may, in the discretion of the Committee, be made
exercisable in installments during the option period.  Any shares<PAGE>
<PAGE>
not purchased on any applicable installment date may be purchased
thereafter at any time before the expiration of the option period. 

               (c)    Exercise of Options.  In order to exercise an
option, the holder thereof (the "Optionee") shall deliver to the
Company written notice specifying the number of shares of Common
Stock to be purchased, together with cash or a certified or bank
cashier's check payable to the order of the Company in the full
amount of the purchase price therefor; provided that, for the
purpose of assisting an Optionee to exercise an option, the Company
may make loans to the Optionee or guarantee loans made by third
parties to the Optionee, on such terms and conditions as the Board
of Directors may authorize and approve; and provided further that
such purchase price may be paid in shares of Common Stock owned by
the Optionee having a market value on the date of exercise equal to
the aggregate purchase price, or in a combination of cash and
Common Stock.  For purposes of the Plan, the market value per share
of Common Stock shall be the last sale price regular way on the
date of reference, or, in case no sale takes place on such day, the
average of the closing bid and asked prices regular way, in either
case on the principal national securities exchange on which the
Common Stock is listed or admitted to trading, or if the Common
Stock is not listed or admitted to trading on any national
securities exchange, the last sale price of the Common Stock as
reported on the National Association of Securities Dealers
Automated Quotation ("NASDAQ") National Market System on such date,
or if the Common Stock is not so reported, the average of the
closing high bid and low asked prices of the Common Stock in the
over-the-counter market on such date, as reported on the NASDAQ
system, or if there are no such prices reported on the NASDAQ
system on such date, as furnished to the Committee by a New York
Stock Exchange member selected from time to time by the Committee
for such purpose.  If there is no bid or asked price reported on
any such date, the market value shall be determined by the
Committee in accordance with the regulations promulgated under
Section 2031 of the Code, or by any other appropriate method
selected by the Committee.  An Optionee shall have none of the
rights of a stockholder until the shares of Common Stock are issued
to him.  An option may not be exercised for less than ten shares of
Common Stock, or the number of shares of Common Stock remaining
subject to such option, whichever is smaller. 

               (d)    Effect of Termination of Employment.  An
option may not be exercised after the Optionee has ceased to be in
the employ of the Company or any Parent or Subsidiary, except in
the following circumstances:  

<PAGE>
<PAGE>
               (i)   if the Optionee's employment is
          terminated by action of his employer, or by
          reason of disability or retirement under any
          retirement plan maintained by the Company or
          any Parent or Subsidiary thereof, the option
          may be exercised by the Optionee within 30
          days after such termination, but only as to
          any shares exercisable on the date the 
          Optionee's employment so terminates;  

               (ii)  in the event of the death of the 
          Optionee during the 30-day period after 
          termination of employment covered by (i)
          above, the person or persons to whom his
          rights are transferred by will or the laws of
          descent and distribution shall have a period
          of one year from the date of his death to
          exercise any options which were exercisable by
          the Optionee at the time of his death;  
     
               (iii) in the event of the death of the
          Optionee while employed, the option shall
          thereupon become exercisable in full, and the
          person or persons to whom the Optionee's
          rights are transferred by will or the laws of
          descent and distribution shall have a period
          of one year from the date of the Optionee's 
          death to exercise such option. 


The provisions of the foregoing clause (iii) shall apply to any
outstanding options which are incentive stock options to the extent
permitted by Section 422(d) of the Code and such outstanding
options in excess thereof shall, immediately upon the occurrence of
the event described in the foregoing clause (iii), be treated for
all purposes of the Plan as nonstatutory stock options and shall be
immediately exercisable as such as provided in the foregoing clause
(iii).

          In no event shall any option be exercisable more than ten
years from the date of grant thereof.  Nothing in the Plan or in
any option granted pursuant to the Plan (in the absence of an
express provision to the contrary) shall confer on any individual
any right to continue in the employ of the Company or any Parent or
Subsidiary thereof or interfere in any way with the right of the
Company to terminate his employment at any time.  

               (e)    Nontransferability of Options.  During the
lifetime of an Optionee, options held by such Optionee shall be
exercisable only by him.  No option shall be transferable other
than by will or by the laws of descent and distribution.  <PAGE>
<PAGE>
               (f)    Adjustments for Change in Stock Subject to
Plan and Other Events.  In the event of a reorganization, 
recapitalization, stock split, stock dividend, combination of
shares, merger, consolidation, rights offering, or any other change
in the corporate structure or shares of the Company, the Committee
shall make such adjustments, if any, as it deems appropriate in the
number and kind of shares subject to the Plan, in the number and
kind of shares covered by outstanding options, or in the option
price per share.  

               (g)    Registration, Listing and Qualification of
Shares of Stock.  Each option shall be subject to the requirement
that if at any time the Board of Directors shall determine that the
registration, listing or qualification of the shares of Common
Stock covered thereby upon any securities exchange or under any
federal or state law, or the consent or approval of any
governmental regulatory body is necessary or desirable as a
condition of, or in connection with, the granting of such option or
the purchase of shares of Common Stock thereunder, no such option
may be exercised unless and until such registration, listing,
qualification, consent or approval shall have been effected or
obtained free of any conditions not acceptable to the Board of
Directors.  The Company may require that any person exercising an
option shall make such representations and agreements and furnish
such information as it deems appropriate to assure compliance with
the foregoing or any other applicable legal requirement.  

               (h)    Other Terms and Conditions.  The Committee
may impose such other terms and conditions, not inconsistent with
the terms hereof, on the grant or exercise of options, as it deems
advisable.     

          6.   Provisions Applicable to Incentive Stock Options.
The Committee (with reference to any action of the Non-Insider
Committee, if and to the extent authorized pursuant to Section 2)
may, in its discretion, grant "incentive stock options" (within the
meaning of Section 422 of the Code) under the Plan to eligible
employees, provided, however, that: (a) no such incentive stock
option shall be granted at an option price which is less than the
market value per share of Common Stock on the date of the grant;
(b) no such incentive stock option shall be issued to any one
Optionee if the aggregate fair market value, determined at the time
of the grant of such incentive stock options, of the shares with
respect to which such incentive stock options are exercisable for
the first time by such Optionee during any calendar year, together
with all options under any other incentive stock option plan of the
Company exercisable during such year, exceeds $100,000; (c) no such
incentive stock option shall be granted to any Optionee who at the
time such option is granted owns more than 10 percent of the total
combined voting stock of the Company unless (i) the option price is<PAGE>
<PAGE>
not less than 110 percent of the fair market value per share of
stock on the date of the grant, and (ii) the option is not
exercisable after five years from the date such option is granted;
and (d) Section 5(d)(ii) hereof shall not apply to any incentive
stock option.  

          7.   Withholding Tax.  Upon the disposition by any person
of shares of Common Stock acquired pursuant to the exercise of an
option granted pursuant to the Plan, the Company shall have the
right to require such person to pay the Company the amount of any
taxes which the Company may be required to withhold with respect to
such shares.

          8.   Amendment and Termination.  Unless the Plan shall
theretofore have been terminated as hereinafter provided, the Plan
shall terminate on, and no option shall be granted thereunder after
March 31, 2002; provided, however, that the Board of Directors may
at any time prior to that date terminate the Plan. The Board of
Directors may at any time amend the Plan; provided, however, that,
except as contemplated in Section 5(f) hereof, the Board of
Directors shall not, without approval by a majority of the votes
cast by the stockholders of the Company at a meeting of stock-
holders at which a proposal to amend the Plan is voted upon: (i)
increase the maximum number of shares of Common Stock for which
options may be granted under the Plan, (ii) change the formula as
to minimum option prices, (iii) extend the period during which
options may be granted or exercised, or (iv) amend the requirements
as to the class of persons eligible to receive options. No
termination or amendment of the Plan may, without the consent of an
Optionee, adversely affect the rights of such Optionee under any
option held by such Optionee.  

          9.   Effectiveness of Plan.  The Plan will not be made
effective unless approved by a majority of the votes cast by the
stockholders of the Company at a meeting of stockholders within
twelve (12) months from the date the Plan is adopted by the Board
of Directors, duly called and held for such purpose, and no option
granted hereunder shall be exercisable prior to such approval.  

          10.  Other Actions.  Nothing contained in the Plan shall
be construed to limit the authority of the Company to exercise its
corporate rights and powers, including but not by way of
limitation, the right of the Company to grant or assume options for
proper corporate purposes other than under the Plan with respect to
any employee or other person, firm, corporation or association.  


                                                   Exhibit 10.18
                  INSITUFORM TECHNOLOGIES, INC.

                 1992 DIRECTOR STOCK OPTION PLAN

          1.   Purposes of Plan.  The purposes of this Plan, which
shall be known as the Insituform Technologies, Inc. 1992 Director
Stock Option Plan, and is hereinafter referred to as the "Plan",
are (i) to provide incentives for members of the Board of
Directors of Insituform Technologies, Inc. (the "Company") by
encouraging their ownership of the class A common stock, $.01 par
value (the "Common Stock"), of the Company, and (ii) to aid the
Company in retaining such directors, upon whose efforts the
Company's success and future growth depends, and attracting other
such directors.

          2.   Administration.  The Plan shall be administered by
the Board of Directors of the Company or, as determined by the
Board of Directors in its sole discretion, by a committee from
time to time appointed by the Board of Directors and consisting of
not less than two of its members (the Board of Directors, or such
committee, for purposes of this Plan hereinafter referred to as
the "Committee"), as hereinafter provided. Subject to the terms of
the Plan, the Committee shall have plenary authority to determine
the directors to whom options are to be granted, the number of
shares to be subject to each such option, the terms and conditions
upon which the options are granted and are exercisable, and
whether such options will be incentive stock options or
non-qualified stock options. For purposes of administration, the
Committee, subject to the terms of the Plan, shall have plenary
authority to establish such rules and regulations, make such
determinations and interpretations, and take such other
administrative actions as it deems necessary or advisable.  All
determinations and interpretations made by the Committee shall be
final, conclusive and binding on all persons, including Optionees
(as hereinafter defined) and their legal representatives and
beneficiaries.  

          The Board of Directors shall designate one of the
members of the Committee as its Chairman.  The Committee shall
hold its meetings at such times and at such places as it may
determine.  A majority of its members shall constitute a quorum. 
All determinations of the Committee shall be made by a majority of
its members.  Any decision or determination reduced to writing and
signed by all members shall be as effective as if it had been made
by a majority vote at a meeting duly called and held.  The
Committee may appoint a secretary (who need not be a member of the
Committee).  No member of the Committee shall be liable for any
act or omission with respect to his service on the Committee if he
acts in good faith and in a manner he reasonably believes to be in
or not opposed to the best interests of the Company.  Service on
the Committee shall constitute service as a director of the
Company for all purposes.

<PAGE>
          3.   Stock Available for Options.  There shall be 
available for options under the Plan a total of 1,000,000 shares
of Common Stock, subject to any adjustments which may be made
pursuant to Section 5(f) hereof.*  Shares of Common Stock used for
purposes of the Plan may be either authorized and unissued shares,
or previously issued shares held in the treasury of the Company,
or both.  Shares of Common Stock covered by options which have
terminated or expired prior to exercise shall be available for
further options hereunder.  

          4.   Eligibility.  Options under the Plan may be granted
to directors of the Company (including officers, key employees and
consultants of the Company).  Options may be granted to such
directors whether or not they hold or have held options previously
granted under the Plan or otherwise granted or assumed by the
Company.  In selecting directors for options, the Committee may
take into consideration any factors it may deem relevant,
including its estimate of the director's present and potential
contributions to the success of the Company.  

          5.   Terms and Conditions of Options.  The Committee 
shall, in its discretion, prescribe the terms and conditions of 
the options to be granted hereunder which terms and conditions 
need not be the same in each case, subject to the following:  

               (a)  Option Price.  The price at which each share
of Common Stock covered by an option granted under the Plan may be
purchased shall be determined by the Committee and shall not be
less than the lesser of (i) the tangible book value per share of
Common Stock, determined in accordance with generally accepted
accounting principles, as of the end of the fiscal quarter of the
Company immediately preceding the fiscal quarter in which the
option is granted, or (ii) the market value per share of Common
Stock on the date of grant of an option as determined pursuant to
Section 5(c).  The date of the grant of an option shall be the
date specified by the Committee in its grant of the option.  

               (b)  Option Period.  The period for exercise of an
option shall in no event be more than ten years from the date of
grant. Options may, in the discretion of the Committee, be made
exercisable in installments during the option period.  Any shares
not purchased on any applicable installment date may be purchased
thereafter at any time before the expiration of the option period. 

               (c)  Exercise of Options.  In order to exercise an
option, the holder thereof (the "Optionee") shall deliver to the
Company written notice specifying the number of shares of Common
Stock to be purchased, together with cash or a certified or bank
________________
*    Increase from 500,000 to 1,000,000 subject to stockholder
     approval.<PAGE>
<PAGE>
cashier's check payable to the order of the Company in the full
amount of the purchase price therefor; provided that, for the
purpose of assisting an Optionee to exercise an option, the
Company may make loans to the Optionee or guarantee loans made by
third parties to the Optionee, on such terms and conditions as the
Board of Directors may authorize; and provided further that such
purchase price may be paid in shares of Common Stock owned by the
Optionee having a market value on the date of exercise equal to
the aggregate purchase price, or in a combination of cash and
Common Stock.  For purposes of the Plan, the market value per
share of Common Stock shall be the last sale price regular way on
the date of reference, or, in case no sale takes place on such
day, the average of the closing bid and asked prices regular way,
in either case on the principal national securities exchange on
which the Common Stock is listed or admitted to trading, or if the
Common Stock is not listed or admitted to trading on any national
securities exchange, the last sale price of the Common Stock as
reported on the National Association of Securities Dealers
Automated Quotation ("NASDAQ") National Market System on such
date, or if the Common Stock is not so reported, the average of
the closing high bid and low asked prices of the Common Stock in
the over-the-counter market on such date, as reported on the
NASDAQ system, or if there are no such prices reported on the
NASDAQ system on such date, as furnished to the Committee by a New
York Stock Exchange member selected from time to time by the
Committee for such purpose.  If there is no bid or asked price
reported on any such date, the market value shall be determined by
the Committee in accordance with the regulations promulgated under
Section 2031 of the Code, or by any other appropriate method
selected by the Committee. An Optionee shall have none of the
rights of a stockholder until the shares of Common Stock are
issued to him.  An option may not be exercised for less than 1,000
shares of Common Stock, or the number of shares of Common Stock
remaining subject to such option, whichever is smaller. 

               (d)  Effect of Termination of Service.  An option
may not be exercised after the Optionee has ceased to be in the
service of the Company or any parent or subsidiary corporations
(within the respective meanings of Sections 424(e) and 424(f) of
the Internal Revenue Code of 1986, as amended [the "Code"], and
referred to herein as "Parent" or "Subsidiary", respectively),
whether as a director of the Company or an employee or consultant
of the Company or any Parent or Subsidiary thereof, except in the
following circumstances:  

<PAGE>
<PAGE>
               (i)   if (x) the Optionee's service as a
          director is terminated for any reason, and
          (y) the Optionee is not an employee or
          consultant of the Company or any Parent or
          Subsidiary thereof, or his employ is
          terminated by action of the Company or by
          reason of disability or retirement under any
          retirement plan maintained by the Company or
          any Parent or Subsidiary thereof, the option
          may be exercised by the Optionee within 30
          days after the last such termination, but
          only as to any shares exercisable on the date
          the Optionee's service and/or employment so
          terminates;  

               (ii)  in the event of the death of the 
          Optionee during the 30-day period after 
          termination of service and/or employment
          covered by (i) above, the person or persons
          to whom his rights are transferred by will or
          the laws of descent and distribution shall
          have a period of one year from the date of
          his death to exercise any options which were
          exercisable by the Optionee at the time of
          his death;  
     
               (iii) in the event of the death of the
          Optionee while serving as a director or
          employed, the option shall thereupon become
          exercisable in full, and the person or
          persons to whom the Optionee's rights are
          transferred by will or the laws of descent
          and distribution shall have a period of one
          year from the date of the Optionee's death to
          exercise such option. 


The provisions of the foregoing clause (iii) shall apply to any
outstanding options which are incentive stock options to the
extent permitted by Section 422(d) of the Code and such
outstanding options in excess thereof shall, immediately upon the
occurrence of the event described in the foregoing clause (iii),
be treated for all purposes of the Plan as nonstatutory stock
options and shall be immediately exercisable as such as provided
in the foregoing clause (iii).

          For purposes of this Section 5(d), service as a
consultant of or to the Company or any Parent or Subsidiary shall
be considered employment, and the period of such service shall be
considered the period of employment; provided, however, that
incentive stock options may be granted under the Plan only to a<PAGE>
<PAGE>
director who is an "employee" (as such term is used in Section 422
of the Code) of the Company or any Subsidiary or Parent.

          In no event shall any option be exercisable more than
ten years from the date of grant thereof.  Nothing in the Plan or
in any option granted pursuant to the Plan (in the absence of an
express provision to the contrary) shall confer on any individual
any right to continue in the service of the Company or any Parent
or Subsidiary thereof or interfere in any way with the right of
the Company to terminate his service.

               (e)  Nontransferability of Options.  During the
lifetime of an Optionee, options held by such Optionee shall be
exercisable only by him.  No option shall be transferable other
than by will or by the laws of descent and distribution.  

               (f)  Adjustments for Change in Stock Subject to
Plan and Other Events.  In the event of a reorganization, 
recapitalization, stock split, stock dividend, combination of
shares, merger, consolidation, rights offering, or any other
change in the corporate structure or shares of the Company, the
Committee shall make such adjustments, if any, as it deems
appropriate in the number and kind of shares subject to the Plan,
in the number and kind of shares covered by outstanding options,
or in the option price per share.  

               (g)  Registration, Listing and Qualification Shares
of Stock.  Each option shall be subject to the requirement that if
at any time the Board of Directors shall determine that the
registration, listing or qualification of the shares of Common
Stock covered thereby upon any securities exchange or under any
federal or state law, or the consent or approval of any
governmental regulatory body is necessary or desirable as a
condition of, or in connection with, the granting of such option
or the purchase of shares of Common Stock thereunder, no such
option may be exercised unless and until such registration,
listing, qualification, consent or approval shall have been
effected or obtained free of any conditions not acceptable to the
Board of Directors.  The Company may require that any person
exercising an option shall make such representations and
agreements and furnish such information as it deems appropriate to
assure compliance with the foregoing or any other applicable legal
requirement.  

               (h)  Other Terms and Conditions.  The Committee may
impose such other terms and conditions, not inconsistent with the
terms hereof, on the grant or exercise of options, as it deems
advisable.     

<PAGE>
<PAGE>
          6.   Provisions Applicable to Incentive Stock Options.
The Committee may, in its discretion, grant "incentive stock
options" (within the meaning of Section 422 of the Code), under
the Plan to directors provided, however, that: (a) no such
incentive stock option shall be issued to a director of the
Company who is not also an employee or officer of the Company; (b)
no such incentive stock option shall be granted at an option price
which is less than the market value per share of Common Stock on
the date of the grant; (c) no such incentive stock option shall be
issued to any one Optionee if the aggregate fair market value,
determined at the time of the grant of such incentive stock
options, of the shares with respect to which such incentive stock
options are exercisable for the first time by such Optionee during
any calendar year, together with all options under any other
incentive stock option plan of the Company exercisable during such
year, exceeds $100,000; (d) no such incentive stock option shall
be granted to any Optionee who at the time such option is granted
owns more than 10 percent of the total combined  voting stock of
the Company unless (i) the option price is not less than 110
percent of the fair market value per share of stock on the date of
the grant, and (ii) the option is not exercisable after five years
from the date such option is granted; and (e) Section 5(d)(ii)
hereof shall not apply to any incentive stock option.  

          7.   Withholding Tax.  Upon the disposition by any
person of shares of Common Stock acquired pursuant to the exercise
of an option granted pursuant to the Plan, the Company shall have
the right to require such person to pay the Company the amount of
any taxes which the Company may be required to withhold with
respect to such shares.

          8.   Amendment and Termination.  Unless the Plan shall
theretofore have been terminated as hereinafter provided, the Plan
shall terminate on, and no option shall be granted thereunder
after March 31, 2002; provided, however, that the Board of
Directors may at any time prior to that date terminate the Plan.
The Board of Directors may at any time amend the Plan; provided,
however, that, except as contemplated in Section 5(f) hereof, the
Board of Directors shall not, without approval by a majority of
the votes cast by the stockholders of the Company at a meeting of
stock-holders at which a proposal to amend the Plan is voted upon:
(i) increase the maximum number of shares of Stock for which
options may be granted under the Plan, (ii) change the formula as
to minimum option prices, (iii) extend the period during which
options may be granted or exercised, or (iv) amend the
requirements as to the class of persons eligible to receive
options. No termination or amendment of the Plan may, without the
consent of an Optionee, adversely affect the rights of such
Optionee under any option held by such Optionee.  

<PAGE>
<PAGE>
          9.   Effectiveness of Plan.  The Plan will not be made
effective unless approved by a majority of the votes cast by the
stockholders of the Company at a meeting of stockholders within
twelve (12) months from the date the Plan is adopted by the Board
of Directors, duly called and held for such purpose, and no option
granted hereunder shall be exercisable prior to such approval.  

          10.  Other Actions.  Nothing contained in the Plan shall
be construed to limit the authority of the Company to exercise its
corporate rights and powers, including but not by way of
limitation, the right of the Company to grant or assume options
for proper corporate purposes other than under the Plan with
respect to any employee or other person, firm, corporation or
association.  


                                                       EXHIBIT 21

          SUBSIDIARIES OF INSITUFORM TECHNOLOGIES, INC.

     The following table sets forth certain information as of
December 31, 1997 concerning the Company and certain of its
subsidiaries.  Unless otherwise indicated all securities of such
subsidiaries are owned by the Company:
<TABLE>
<CAPTION>
                                                               % of
          Name                 Place of Incorporation    Voting Securities
          ----                 ----------------------    -----------------
<S>                            <C>                       <C>
Affholder, Inc.                Missouri                       100(1)
INA Acquisition Corp.          Delaware                       100
Insituform Central, Inc.       Delaware                       100(1)
Insituform France S.A.         France                          66.6
Insituform Gulf South, Inc.    Delaware                       100(2)
Insituform Holdings (UK)       United Kingdom                 100(3)
 Ltd. 
Insituform Japan K.K.          Japan                          100(3)
Insituform Licensees 
 B.V./S.A.                     Netherlands and Delaware       100(3)
Insituform Linings Plc.        United Kingdom                  51(4)
Insituform Mid-America, Inc.   Delaware                       100
Insituform Midwest, Inc.       Delaware                       100
Insituform Missouri, Inc.      Delaware                       100(1)
Insituform (Netherlands)
 B.V.                          Netherlands and Delaware       100(5)
Insituform of New England,     Massachusetts                  
 Inc.                                                         100
Insituform North, Inc.         Delaware                       100(1)
Insituform Plains, Inc.        Delaware                       100(1)
Insituform de Puerto Rico,
 Inc.                          Puerto Rico                    100(1)
Insituform Rockies, Inc.       Delaware                       100(1)
Insituform Southeast, Inc.     Florida                        100(1)
Insituform Southwest, Inc.     Delaware                       100
Insituform Technologies
 Limited                       Alberta                        100(1)
Insituform Technologies
 Limited                       United Kingdom                 100(4)
Insituform Texark, Inc.        Delaware                       100(1)
Insituform West, Inc.          Oregon                         100(3)
Insituform Mar-Tech Limited    British Columbia               100(3)
Midsouth Partners 
 (partnership)                 Tennessee (Partnership)         57.5(6)
NuPipe, Inc.                   Oregon                         100
NuPipe International, Inc.     Delaware                       100(7)
NuPipe Limited                 United Kingdom                 100(4)




<PAGE>

                                                               % of
          Name                 Place of Incorporation    Voting Securities
          ----                 ----------------------    -----------------
<S>                            <C>                       <C>
PALTEM Systems, Inc.           Delaware                       100(1)
Tite Liner NRO Corp.           Alberta                        100(1)
United Pipelines Argentina     Argentina                      100(1)
 S.A.
United Pipeline de Mexico      Mexico                          55(1)
 S.A. de C.V.
United Pipeline Systems USA,
 Inc.                          Delaware                       100(1)
United Sistema de Tuberias
 Ltda.                         Chile                           60(1)


     Other subsidiaries of the Company are not named in the table
above. Such unnamed subsidiaries considered in the aggregate as a
single subsidiary, would not constitute a significant subsidiary.

- -------------------
(1)  Securities are owned by Insituform Mid-America, Inc.
(2)  Securities are owned by Naylor Industries, Inc.
(3)  Securities are owned by INA Acquisition Corp.
(4)  Securities are owned by Insituform Holdings (UK) Ltd.
(5)  Securities are owned by Insituform Licensees B.V./S.A.
(6)  Securities are owned 42.5% by E-Midsouth, Inc., a wholly-owned
     subsidiary of the Company, and 15% by Insituform Southwest,
     Inc.
(7)  Securities are owned by NuPipe, Inc.




</TABLE>





                                                     Exhibit 23.1

       Consent of Independent Certified Public Accountants

Insituform Technologies, Inc.
Chesterfield, Missouri


     As independent public accountants, we hereby consent to the
incorporation of our report, dated March 4, 1998, included in
Insituform Technologies, Inc.'s 1997 Form 10-K, into the Company's
previously filed Registration Statements on Form S-8 Nos. 33-82486,
33-82488 and 33-63953.


                                   Arthur Andersen LLP


St. Louis, Missouri
March 27, 1998


                                                     Exhibit 23.2

       Consent of Independent Certified Public Accountants



Insituform Technologies, Inc.
Chesterfield, Missouri



     We hereby consent to the incorporation by reference in
Registration Statement No. 33-82486 on Form S-8, Registration
Statement No. 33-82488 on Form S-8 and Registration Statement No.
33-63953 on Form S-8 of our report dated March 8, 1996, except for
Note 13 which is as of March 26, 1997, relating to the consolidated
financial statements of Insituform Technologies, Inc. appearing in
the Company's Annual Report on Form 10-K for the year ended
December 31, 1997.





                                   BDO SEIDMAN, LLP



Memphis, Tennessee
March 26, 1998



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