UNITED STATES FILTER CORP
424B3, 1999-01-21
REFRIGERATION & SERVICE INDUSTRY MACHINERY
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                                                               Filed pursuant to
                                                                  Rule 424(b)(3)
                                                              File No. 333-67443

PROSPECTUS

                                 [USFILTER LOGO]

                        UNITED STATES FILTER CORPORATION
                                  COMMON STOCK


                                5,999,051 SHARES




            We may use this  Prospectus to issue or reserve shares of our Common
Stock  from  time  to  time  in  connection  with  the  acquisition  of  various
businesses. You should read this Prospectus for more information.

            Any shares  issued or reserved  for issuance  under this  Prospectus
will be listed on the New York Stock Exchange. Our Common Stock trades under the
symbol "USF."

            AN  INVESTMENT IN THESE SHARES  INVOLVES  CERTAIN  RISKS.  SEE "RISK
FACTORS" BEGINNING ON PAGE 5.



            NEITHER  THE  SECURITIES  AND  EXCHANGE  COMMISSION  NOR  ANY  STATE
SECURITIES  COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED
UPON THE  ADEQUACY OR ACCURACY OF THIS  PROSPECTUS.  ANY  REPRESENTATION  TO THE
CONTRARY IS A CRIMINAL OFFENSE.



                The date of this Prospectus is January 13, 1999.


<PAGE>







                                 [USFILTER LOGO]

                        UNITED STATES FILTER CORPORATION
                                  COMMON STOCK

                                   PROSPECTUS

                                5,999,051 SHARES





================================================================================

                                TABLE OF CONTENTS

About This Prospectus......................................................... 2
Where You Can Find More Information........................................... 2
The Company................................................................... 4
Risk Factors.................................................................. 5
Reselling Shares..............................................................14
Description of Capital Stock..................................................15
Validity of Common Stock......................................................21
Experts.......................................................................21

================================================================================



<PAGE>
ABOUT THIS PROSPECTUS

      Under this  Prospectus,  we may offer and issue up to 5,999,051  shares of
our Common Stock in connection  with the acquisition of various  businesses.  We
may issue the shares in mergers or  consolidations  or in exchange for shares of
capital  stock,  partnership  interests or other  tangible or intangible  assets
representing a direct or indirect interest in other companies or enterprises, or
for debt obligations of the acquired businesses. If we issue warrants,  options,
convertible debt obligations,  convertible equity securities,  contingent rights
or other similar rights to acquire shares in connection  with  acquisitions,  we
may reserve shares to cover their  offering,  issuance and sale upon exercise or
conversion of such rights.

      When we issue shares under this  Prospectus,  we may promise the recipient
that the amount the recipient receives from a later sale of such shares will not
be lower than the valuation (or a specific  amount related to such valuation) we
used at the time we  originally  issued the shares.  These  guaranties  would be
limited in duration and could require us to make up any shortfall (including any
shortfall  attributable to brokers' commissions and selling expenses) in cash or
by issuing additional shares under this Prospectus.

      For each acquisition,  we expect to negotiate the terms with the owners or
controlling  persons of the  businesses  we plan to  acquire.  We will value the
shares  issued or  reserved  in each  acquisition  based on or related to market
prices  for our  Common  Stock  on the New  York  Stock  Exchange  (NYSE).  Such
valuation  may  occur at the time we agree to the terms of an  acquisition,  the
time of  delivery of our shares,  during  periods  ending at or about such times
based on average market prices, or otherwise.

      We will not pay underwriting discounts or commissions, although we may pay
brokers' or finders' fees with respect to specific acquisitions - in some cases,
we may issue shares  under this  Prospectus  in full or partial  payment of such
fees.  Any  person  who  receives  such fees may be deemed to be an  underwriter
within  the  meaning  of the  U.S.  Securities  Act of  1933,  as  amended  (the
Securities Act).

      With our consent,  persons who have received or will receive  shares under
this Prospectus in connection with acquisitions (Selling Stockholders),  may use
this Prospectus to sell such shares at a later date.

WHERE YOU CAN FIND MORE INFORMATION

      We file annual,  quarterly and special reports, proxy statements and other
information  with the U.S.  Securities and Exchange  Commission  (SEC).  Our SEC
filings are  available  to the public over the Internet at the SEC's web site at
www.sec.gov. You may also read and copy any document we file at the SEC's public
reference rooms in Washington,  D.C., New York, New York and Chicago,  Illinois.
Please call the SEC at 1-800-SEC-0330  for further  information about the public
reference rooms.

      For this offering, we have filed registration  statements on Form S-4 with
the SEC (the Registration  Statements) 


                                       2
<PAGE>

under  the  Securities  Act.  This  Prospectus  does  not  contain  all  of  the
information set forth in the Registration Statements,  certain portions of which
the SEC  permits  us to  omit.  If you  would  like to  review  those  portions,
including  exhibits,  please  visit  the  SEC's  web site or call the SEC at the
number mentioned above.

      If we make statements in this Prospectus that refer to the contents of any
omitted documents,  such statements may be incomplete.  In those cases, we refer
you to the omitted  document for a more  complete  description.  Such  reference
modifies any statements made in this Prospectus.

      The SEC allows us to  "incorporate  by reference" the  information we file
with them,  which means that we can  disclose  important  information  to you by
referring you to those documents.  The information  incorporated by reference is
an important part of this  Prospectus,  and information  that we file later with
the SEC will automatically update and supersede this information.

      We incorporate by reference the documents and reports listed below and any
future filings with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the U.S.
Securities Exchange Act of 1934, as amended. Future filings include filings made
after the date of the initial Registration Statements and prior to effectiveness
of the  Registration  Statements and after the date of this Prospectus and prior
to the termination of this Offering. Documents incorporated by reference include
the following:

o    Annual Report on Form 10-K for the fiscal year ended March 31, 1998;

o    Quarterly  Reports on Form 10-Q for the  quarters  ended June 30,  1998 and
     September 30, 1998;

o    Quarterly  Report on Form  10-Q/A  dated  November  9, 1998  (amending  the
     Quarterly Report on Form 10-Q for the quarter ended June 30, 1998);

o    Current Reports on Form 8-K dated:

          December 9, 1997; 
          January 16, 1998; 
          May 12, 1998; 
          May 19, 1998; 
          June 15, 1998; 
          August 14, 1998; 
          November 3, 1998; 
          November 9, 1998; 
          November 27, 1998; and 
          December 3, 1998.

o    Current Reports on Form 8-K/A filed:

          February 6, 1998 and March 4, 1998  (amending  the  Current  Report on
          Form 8-K dated December 9, 1997);

          February  6,  1998,  March 4,  1998,  May 12,  1998  and May 14,  1998
          (amending the Current Report on Form 8-K dated January 16, 1998);

          May 14, 1998  (amending  the Current  Report on Form 8-K dated May 12,
          1998);

          August 17, 1998  (amending the Current Report on Form 8-K dated August
          14, 1998); and

          September 18, 1998 (amending the Current Report on Form 8-K dated June
          15, 1998);

                                       3
<PAGE>

o    Definitive Proxy Statement on Schedule 14A dated July 7, 1998; and

o    The descriptions of Common Stock, and the associated rights to purchase our
     Series A Junior Participating Preferred Stock (the "Rights"),  contained in
     our Registration Statements on Form 8-A, as amended.

      You may request a free copy of these filings,  other than exhibits (unless
such exhibits are specifically incorporated by reference into such documents) by
writing or telephoning us at the following address:

                                 General Counsel
                        United States Filter Corporation
                               40-004 Cook Street
                          Palm Desert, California 92211
                                 (760) 340-0098

      You should rely only on the information contained in this Prospectus or to
which we have  referred you. We have not  authorized  anyone to provide you with
information that is different. We are not making an offer of these securities in
any state or country where the offer is not permitted.

      This Prospectus is not an offer to sell, and it is not soliciting an offer
to  buy,  any  securities  other  than  those  offered  in this  document.  This
Prospectus  also is not an offer to sell,  and it is not  soliciting an offer to
buy, any securities  offered in this document in any circumstances in which such
offer or solicitation is unlawful.

      You should not  assume  that the  information  in this  Prospectus  or any
supplement to this  Prospectus is accurate as of any date other than the date on
the first page of those documents.

THE COMPANY

      We are a leading global provider of industrial,  municipal, commercial and
consumer water and wastewater treatment systems,  products and services, with an
installed  base of systems that we believe is one of the largest  worldwide.  We
offer a single-source  solution to our customers  through what we believe is the
industry's  broadest range of  cost-effective  systems,  products,  services and
proven  technologies.  In  addition,  we  market  a  broad  line  of  waterworks
distribution products and services.

      We have one of the  industry's  largest  networks of sales and service and
distribution  facilities through  approximately 1,500 locations,  including over
600  franchised  dealerships,  and  approximately  850  Company-owned  or leased
facilities, including manufacturing plants. We capitalize on our large installed
base, extensive  distribution network and manufacturing  capabilities to provide
customers with ongoing local service and maintenance.

      We are a leading  provider of  outsourced  water  services,  including the
operation  of water and  wastewater  treatment  systems at  customer  sites.  In
addition,   we  are  actively  involved  in  the  development  of  privatization
initiatives for municipal water treatment  facilities  throughout the world and,
specifically, in the Unites States, Mexico and Canada. We also own a significant
amount of property with appurtenant water rights in the Western and Southwestern
United States, 

                                       4
<PAGE>
substantially all of which are leased to agricultural tenants.

      Our principal  executive  offices are located at 40-004 Cook Street,  Palm
Desert, California 92211 and the telephone number there is (760) 340-0098.

RISK FACTORS

      Before  you  invest  in  our  Common  Stock,  you  should  consider  risks
associated with the investment.  We describe some of the principal risks in this
section.

      This  Prospectus   contains   information  about  us,  some  of  which  is
incorporated  by  reference  to  other  documents.   Our  information   includes
"forward-looking  statements"  within  the  meaning  of the  Private  Securities
Litigation Reform Act of 1995.  Forward-looking  statements are statements other
than historical  information or statements about our current condition.  You can
identify some forward-looking statements by the use of terms such as "believes,"
"contemplates,"   "expects,"   "may,"  "will,"   "could,"   "should,"   "would,"
"anticipates," "intends" or "continues."

      We  may  not  achieve  the  results   indicated  by  the   forward-looking
statements.  The risk factors in this section are some of the factors that could
cause our  actual  results to differ  materially  from  those  contained  in any
forward-looking statement.

      EARNINGS VARIATION DUE TO BUSINESS CYCLES AND SEASONAL FACTORS

      Our operating results can experience quarterly or annual variations due to
business cycles,  seasonality and other factors. The market price for our Common
Stock may  decrease if our  operating  results do not meet the  expectations  of
stock market analysts.

      About  45% of our  sales  are  of  capital  equipment.  Sales  of  capital
equipment  are affected by general  fluctuations  in the  business  cycle in the
United States and  worldwide,  instability of economic  conditions  (such as the
current  conditions in the Asia Pacific  region and Latin  America) and interest
rates, as well as other factors.

      In  addition,  operating  results  of some of our  business  segments  are
significantly  influenced,  along with other factors such as interest  rates, by
particular business cycles and seasonality, including:

                                         BUSINESS CYCLES
                                           AND SEASONS
         SEGMENT                        AFFECTING RESULTS
- --------------------------------------------------------------------

Waterworks Distribution        o  Real estate development
                               o  Housing starts
                               o  Winter months in temperate regions
                               o  Industrial capital spending

Consumer and Commercial        o  Consumer spending
                               o  Housing starts

Industrial Products and        o  Microelectronics
Services                       o  Pharmaceutical
                               o  Biotechnology
                               o  Municipal spending

      PROFIT UNCERTAINTY IN FIXED-PRICE CONTRACTS

      Contracts with fixed prices make up a significant portion of our revenues.
If our original  cost  estimates  are  incorrect,  there are delays in scheduled
deliveries or we otherwise do not progress  under a  

                                       5
<PAGE>

fixed-price  contract as we  expected,  the profits  under that  contract  could
decrease,  or we could  lose  money on that  contract.  When our cost  estimates
change  for  fixed-price  contracts,  we  record  adjustments  in our  financial
statements, and any future downward adjustments could be material.

      COMPETITION

      We compete  against  many  companies  in  fragmented,  highly  competitive
markets and we have fewer resources than some of those companies. Our businesses
compete  within and outside the United  States  principally  on the basis of the
following factors:

          BUSINESS                           FACTORS
  --------------------------------------------------------------------

    Water and Wastewater        o  Product quality and specifications
         Treatment              o  Technology
                                o  Reliability
                                o  Price (can predominate among
                                   competitors in the wastewater
                                   treatment business that have
                                   sufficient technical qualifications,
                                   particularly in the municipal
                                   contract bid process)
                                o  Customized design and technical
                                   qualifications
                                o  Reputation
                                o  Prompt local service

       Filtration and           o  Price
         Separation             o  Technical expertise
                                o  Product quality
                                o  Responsiveness to customer needs
                                      o  Service
                                      o  Technical support

   Industrial Products and      o  Quality
          Services              o  Service
                                o  Price

   Waterworks Distribution      o  Prompt local service capability
                                o  Product knowledge by sales force and
                                   service branch management
                                o  Price

   Consumer and Commercial      o  Price
          Products              o  Product quality
                                o  "Taste"
                                o  Service
                                o  Distribution capabilities
                                o  Geographic presence
                                o  Reputation

      The  waterworks   distribution   business  competes  against   independent
wholesalers,  distribution  chains  similar to ours and  manufacturers  who sell
directly to customers. The consumer products business competes with thousands of
companies,  including  those  with  national,  regional  or  local  distribution
networks, as well as retail outlets.

      Competitive pressures,  including those described above, and other factors
could  cause us to lose market  share or could  result in  decreases  in prices,
either of which could have a material  adverse effect on our financial  position
and results of operations.

      RISKS RELATED TO ACQUISITIONS

      We have made a large  number  of  acquisitions  since  1991 and we plan to
continue to pursue  acquisitions.  Candidates for acquisition include businesses
that allow us to:

      o    expand  the segments of the water and wastewater treatment and water-
           related industries in which we participate;


                                       6
<PAGE>

      o    complement our technologies, products or services;

      o    broaden our customer base and geographic areas served;

      o    expand our global distribution network; or

      o    use our "one-stop-shop" approach in terms of technology, distribution
           or service.

      If we are not  correct  when we assess the value,  strengths,  weaknesses,
liabilities and potential  profitability of acquisition candidates or we are not
successful in integrating the operations of acquired businesses,  our results of
operation or financial  position  could be adversely  affected and we could lose
money. In addition, if we acquire other businesses by making so-called "hostile"
tender offers, as we did with Memtec Limited, we may encounter added risks. When
we  negotiate  to acquire a business,  that  business  generally  makes  legally
binding  statements  (known as  "representations")  to us and  provides  us with
access  to  internal  documents  and other  data  that we rely upon in  deciding
whether to acquire the business  and, if we decide to acquire the  business,  on
what terms. We would not get such  representations or internal  information in a
"hostile" tender offer. We will continue to look for acquisition  opportunities,
although we may not continue to easily find desirable acquisition  candidates or
complete acquisitions.

      RISKS OF DOING BUSINESS IN OTHER COUNTRIES

      We have acquired businesses, and we otherwise conduct business, in markets
outside  the United  States,  and we expect to continue to do so. In addition to
the risk of currency fluctuations, the risks associated with conducting business
in some countries outside the United States can include:

      o   slower payment of invoices;

      o   underdeveloped legal systems;

      o   nationalization; and

      o   social, political and economic instability.

      Current  economic  conditions in the Asia Pacific region and Latin America
have adversely  affected our  operations and sales there.  We cannot predict the
full impact of this economic  instability,  but it could have a material adverse
effect on our revenues and profits.

      IMPORTANCE OF CERTAIN EMPLOYEES

      Our senior officers,  particularly  Richard J. Heckmann,  who is our Chief
Executive Officer, are very important to the success of our operations.  We have
various   compensation  and  benefit  arrangements  with  our  senior  officers,
including Mr.  Heckmann,  that are designed to encourage  them to continue their
employment  with us.  However,  if any of our senior officers do not continue in
their present roles, our prospects may be adversely affected.

                                       7
<PAGE>

      YEAR 2000 RISKS

      The Year 2000  issue  concerns  the  potential  exposures  related  to the
automated generation of business and financial misinformation resulting from the
application of computer  programs which have been written using six digits (such
as 12/31/99),  rather than eight (such as 12/31/1999),  to define the applicable
date of  business  transactions.  Many  products  and systems  could  experience
malfunctions  when attempting to process certain dates,  such as January 1, 2000
or September 9, 1999 (a date programmers sometimes used as a default date).

      Our Year 2000 compliance program consists of three phases:  identification
and assessment; remediation; and testing. For any given system, the phases occur
in sequential order, from  identification  and assessment of Year 2000 problems,
to remediation, and, finally, to testing our solutions.

      We have completed  identification,  assessment and  remediation of most of
our information  technology (IT) systems.  We have commenced  identification and
assessment of our non-IT systems, which include, among other things,  components
found in water and  wastewater  treatment  plants and  process  water  treatment
systems owned and/or  operated under  contract by us and in our hazardous  waste
treatment  facilities,  as well as components of equipment in our  manufacturing
facilities.  Identification  and  assessment  with respect to non-IT  systems is
projected to continue until September 1999 for currently owned businesses.

      However, as we acquire additional businesses, each IT and non-IT system of
the acquired  business  must be  independently  identified  and  assessed.  As a
result,  all three phases of our Year 2000  compliance  program may be occurring
simultaneously  as they  relate  to  different  systems.  Each  phase may have a
varying  timetable to completion,  depending upon the system and the date when a
particular business was acquired by us.

      With the possible  exception  of the  remediation  and testing  phases for
certain of our non-IT systems,  all phases of our Year 2000  compliance  program
are expected to be completed by September  1999,  although we cannot  assure you
that  all  phases  for  all  businesses  will be  completed  by  that  date.  In
particular, we cannot assure you that recently or newly acquired businesses will
be Year 2000  compliant,  although we currently  have a policy that  requires an
acquisition candidate to represent that its business is Year 2000 compliant.  To
the  extent  feasible,  we also  review  the Year  2000  status  of  acquisition
candidates before we complete an acquisition.

      In addition to our internal systems,  we have begun to assess the level of
Year  2000  problems  associated  with  our  various  suppliers,  customers  and
creditors.  To test the Year 2000 compliance status of our suppliers, we plan to
submit  hypothetical  orders to our  suppliers  dated  after  December  31, 1999
requesting confirmation that the orders have been correctly processed.

      Our costs to date for our Year 2000 compliance program, excluding employee
salaries, have not been material. Although we have not completed our assessment,
we do not currently  believe that the future 

                                       8
<PAGE>

costs associated with our Year 2000 compliance program will be material.

      We are currently unable to determine our most reasonably likely worst-case
Year 2000  scenario,  as we have not  identified  and  assessed all our systems,
particularly  our  non-IT  systems.   As  we  complete  our  identification  and
assessment of internal and third-party systems, we expect to develop contingency
plans for various worst-case scenarios. We expect to have such contingency plans
in place by September  1999. A failure to address Year 2000 issues  successfully
could have a material  adverse  effect on our business,  financial  condition or
results of operations.

      POTENTIAL ENVIRONMENTAL RISKS

      Environmental  laws and regulations  require us to meet certain  standards
and impose liability if we do not meet them.  Environmental laws and regulations
and their  interpretations  change.  We must comply with any new  standards  and
requirements,  even when they  require us to clean up  environmental  conditions
that  were  not  illegal  when  the  conditions  were  created.  We can be  held
responsible for failures to meet  environmental  standards by businesses we have
acquired that happened  before we acquired them. All of these  requirements  can
cost us money.

      Environmental costs can result from cleanup obligations, civil or criminal
enforcement  actions or private actions.  Costs of environmental  compliance and
fines or penalties for  environmental  violations  could have a material adverse
effect on us in the future.  Environmental  risks that we have in our businesses
and some of the specific  environmental  liabilities that we know about and that
could result in significant future costs to us are discussed below.

      Cleanup Liabilities. The United States Environmental Protection Agency has
notified us that we are a potentially  responsible party under the Comprehensive
Environmental  Response,  Compensation,  and  Liability  Act of 1980 (CERCLA) at
certain sites to which we (or companies we have  acquired)  have  allegedly sent
waste in the past. We may receive additional notices under CERCLA or state law.

      You  should  be aware  that in 1995,  Culligan  Water  Technologies,  Inc.
(Culligan),  one of our  subsidiaries,  bought part of Anvil Holdings,  Inc. and
assumed certain environmental  liabilities  associated with soil and groundwater
contamination  at Anvil  Knitwear's  Asheville  Dyeing  and  Finishing  Plant in
Swannanoa,  North Carolina. Since 1990, Culligan has monitored the contamination
pursuant to an Administrative Consent Order entered into with the North Carolina
Department of Environment,  Health and Natural  Resources related to the closure
of an underground  storage tank at the site.  Groundwater  testing at this plant
and at two  adjoining  properties  showed  levels  of a  cleaning  solvent  that
Culligan believed to be from the plant that exceed applicable state standards.

      Culligan has begun cleanup of the  contamination  and  estimates  that the
costs of future site cleanup will range from $1.0  million to $1.8  million.  We
have a reserve for  financial  accounting  purposes for cleanup of this site. We
anticipate  that  the  potential  costs of  further  monitoring  and  corrective
measures to address the  groundwater  problem  will not have a 

                                       9
<PAGE>

material  adverse  effect on our  financial  position or results of  operations.
However,  because  the  full  extent  of  the  required  cleanup  has  not  been
determined, we cannot assure you of this result.

      Also, we do not believe that our liability relating to all of the sites we
know to require  cleanup,  including  the Anvil  site,  will be  material to us.
However,  we cannot assure you that such sites and/or other sites that we do not
know about will not have a material adverse effect on our financial  position or
results of operations.

      Hazardous  Waste  Treatment  and Recovery  Facilities.  We own and operate
several hazardous waste treatment and recovery facilities,  which are subject to
very strict  environmental laws and regulations and compliance reviews. If we do
not comply  with these  regulations,  we could be fined  significant  amounts of
money  and/or the  facilities'  hazardous  waste  permits  could be suspended or
revoked.

      Liability for Wastewater Treatment  Facilities and Wastewater  Discharges.
By contract,  we operate various wastewater  collection and treatment facilities
that were developed and are owned by governmental or industrial entities.  Under
certain of these  contracts  and  applicable  environmental  laws we may be held
responsible as an operator of such facilities.  We also operate facilities owned
by us, including service deionization centers and manufacturing facilities, that
discharge   wastewater  in  connection   with  routine   operations.   Potential
responsibilities  relating  to these  facilities  include  paying  the  fines or
penalties if the  facilities  malfunction  or discharge  wastewater  which falls
below certain regulatory  thresholds.  In some cases, such possible malfunctions
or discharges  depend upon design or operational  conditions  over which we have
limited, if any, control.

      Underground   Storage  Tanks  and  Potential  for  Soil  and   Groundwater
Contamination.  Some  of our  facilities  contain  (or in  the  past  contained)
underground   storage   tanks  which  may  have   caused  soil  or   groundwater
contamination. At one site formerly owned by Culligan, we are investigating, and
have taken certain actions to correct, contamination that may have resulted from
a former underground storage tank. Based on the amount of contamination believed
to have been present when the tank was removed, and the probability that some of
the  contamination  may have  originated  from  nearby  properties,  we believe,
although  there can be no  assurance,  that this matter will not have a material
adverse effect on our financial position or results of operations.

      Impact  of   Environmental   Laws  on  Our  Product  Sales  and  Potential
Liabilities. The liabilities and risks imposed on our customers by environmental
laws may adversely  impact demand for some of our products or services or impose
greater  liabilities and risks on us, which could also have an adverse effect on
our competitive and financial position.

      RISKS RELATED TO MUNICIPAL WATER AND WASTEWATER BUSINESS

      Sales to  municipal  customers  make up a  significant  percentage  of our
revenues.  We encounter some additional risks with municipalities that we do not
have  with  industrial  customers.  Competition  for  selection  of a  municipal
contractor usually 

                                       10
<PAGE>

requires a formal bidding process. By requiring formal bids,  municipal projects
entail  longer lead times than  industrial  projects and force us to commit more
resources.  In addition, the municipal business depends upon the availability of
funding at the local level, which may be subject to increasing pressure as local
governments are expected to bear a greater share of the cost of public services.

      TECHNOLOGICAL AND REGULATORY RISKS

      Changes  in  technology,   competitively  imposed  process  standards  and
regulatory  requirements  influence  the  demand  for many of our  products  and
services.  To grow and  remain  competitive,  we need to  anticipate  changes in
technological  and regulatory  standards.  We need to introduce new and enhanced
products  on a timely  basis.  We may not  achieve  these  goals and some of our
products may become obsolete.

      New products often face lack of market  acceptance,  development delays or
operational  failure.   Stricter   governmental   regulations  also  may  affect
acceptance of new products.  The market growth potential of in-process  research
and development  that we have acquired with some businesses we bought is subject
to significant  risks,  including high development,  production and sales costs,
introduction  of  competing   technologies  and  the  possible  lack  of  market
acceptance of the developed products and technologies.

      Our  trademarks  or patents may not provide  substantial  protection  from
competition or be of commercial benefit to us. We may not be able to enforce our
rights under  trademarks or patents  against third parties.  Some  international
jurisdictions may not protect these kinds of rights to the same extent that they
are  protected  under U.S.  law. If a third party  successfully  challenges  our
trademarks or patents, it may affect our competitive and financial position.

      RISKS RELATED TO WATER RIGHTS AND TRANSFERS OF WATER

      We own more than 47,000  acres of  agricultural  land in the  southwestern
United States,  most of which is located within the Imperial Irrigation District
(IID) in Imperial County,  California.  We lease substantially all of the 47,000
acres to agricultural tenants.

      We  acquired  the land with water  rights,  and we are  seeking to acquire
additional  properties  with water  rights,  primarily in the  southwestern  and
western United States. In the future, we may want to transfer water attributable
to such water rights, particularly from the land located in the IID.

      Our ability to transfer water and the  profitability of any such transfers
are subject to various uncertainties, including:

      o   Hydrologic risks of variable water supplies;

      o   Unavailable or inadequate transportation facilities;

      o   Allocations of water under existing and prospective priorities;

      o   Risks of adverse changes to or interpretations of U.S. federal,  


                                       11
<PAGE>

          state and local  laws,  regulations  and  policies  relating  to water
          rights; and

      o   Compliance  with all U.S.  federal  and state  environmental  laws and
          regulations.

      Transfers of IID water are subject to additional uncertainties, including:

      o   Control by the IID of the timing and terms of any transfers of our IID
          water (the IID holds title to all of the water  rights  within the IID
          in trust for the landowners);

      o   Limitations  of Colorado  River water  allocations  (the source of all
          water deliveries to IID properties) under

             o    international  treaties;  
             o    interstate  compacts;  
             o    U.S. federal and state laws and regulations; and 
             o    contractual arrangements;

      o   Curtailment  of water  deliveries  by the U.S.  government in times of
          drought;

      o   Required approval by the U.S. Secretary of the Interior;

      o   If a transfer of IID water were approved,  possible assertion by other
          California  water  districts  and users of claims  adverse  to our IID
          water  rights,  including  but not  limited to claims that the IID has
          failed to  satisfy  U.S.  federal  law and  California  constitutional
          requirements  that IID water must be put to reasonable  and beneficial
          use  (a  finding  that  the  IID's  water  use  is   unreasonable   or
          nonbeneficial could adversely impact title to our IID water rights and
          the ability to transfer our IID water); and

      o   Uncertainty of California laws relating to the cost of  transportation
          and volume of water which could be required to be transported  via the
          Colorado River Aqueduct owned by the  Metropolitan  Water District,  a
          quasi-governmental  agency (any IID water  transferred to metropolitan
          areas of Southern  California  such as San Diego would be  transported
          through this aqueduct).

      The  uncertainties  associated  with  water  rights  could have a material
adverse effect on our future profitability.

      EURO CONVERSION

      On January 1, 1999,  eleven of fifteen  member  countries  of the European
Union  established  fixed  conversion  rates between their  existing  currencies
(legacy  currencies) and one common currency - the euro. The euro is now trading
on currency exchanges and may be used as a non-cash transactional  currency. The
conversion  to the euro  eliminates  currency  exchange  rate risk  between  the
participating member countries.  Beginning in January 2002, new euro-denominated
bills and coins will be issued,  and legacy  currencies  will be withdrawn  from
circulation.

                                       12
<PAGE>

      We are assessing the issues raised by the euro currency conversion.  These
issues include,  among others,  the need to adapt computer and financial systems
to  accommodate  euro-denominated   transactions,   the  competitive  impact  of
increased price  transparency in the  participating  countries and the impact on
our  existing  contracts.   Since  financial  systems  and  processes  currently
accommodate multiple currencies, we contemplate system conversion by mid-2001 if
not already  addressed  in  conjunction  with Year 2000  remediation.  We do not
expect system conversion costs to be material. Due to numerous uncertainties, we
cannot reasonably  estimate at this time the effects a common currency will have
on pricing  within the European Union and the resulting  impact,  if any, on our
financial condition or results of operations.

      SHARES ELIGIBLE FOR FUTURE SALE

      The market price of our Common  Stock could be  adversely  affected by the
availability  for public  sale of up to  42,569,560  shares  held or issuable on
January 4, 1999, including:

    NUMBER OF SHARES
    OF COMMON STOCK            HOLDER AND/OR MANNER OF HOLDING
  ----------------------------------------------------------------------

    o  Up to 2,806,263         Shares may be delivered:

                                 o  in lieu of cash by Laidlaw Inc. or its
                                    affiliates at maturity of Laidlaw's 5 3/4%
                                    Exchangeable Notes due 2000; or

                                 o  upon sale in accordance with Rule 144(k)
                                    under the Securities Act.

    o  10,481,013              Shares issuable upon conversion of our 4 1/2%  
                               Convertible Subordinated  Notes  due  2001 at 
                               a  conversion  price  of $39.50 per share of 
                               Common Stock.

    o  1,200,000               Shares issuable upon exercise of two sets of 
                               warrants, in each case expiring on September  
                               17, 2007 and  exercisable at any time after 
                               the first sale of water rights from certain 
                               of our properties:

                                 o  600,000 at an exercise price of $50.00
                                    per share; and

                                 o  600,000 at an exercise price of $60.00
                                    per share.

    o  31,050                  Shares  issuable  upon   exercise   of  currently
                               exercisable  warrants  at an  exercise  price  of
                               $36.53 per share, expiring February 11, 2002.

    o  22,235,786              Outstanding shares subject to agreements pursuant
                               to which the holders have rights to request us to
                               register the sale of their Common Stock under the
                               Securities Act and/or, to include certain 
                               percentages  of  such  shares  in  other 
                               registration statements filed by us.

                               Such rights as to 8,000,000 shares are not 
                               exercisable until February 17, 2000.

    o  5,815,450               Outstanding shares currently registered for sale 
                               under the Securities Act pursuant to a shelf 
                               registration statement.

                                       13
<PAGE>

RESELLING SHARES

      With our consent,  this Prospectus may be used by Selling Stockholders who
may wish to sell shares. We may consent to the use of this Prospectus by Selling
Stockholders  for a  limited  period  of time and  subject  to  limitations  and
conditions  which may be varied by agreement  between us and one or more Selling
Stockholders.

      Selling Stockholders may agree that:

      o   an offering of shares under this  Prospectus be effected in an orderly
          manner  through  securities  dealers,  acting  as  broker  or  dealer,
          selected by us;

      o   they will enter into  custody  agreements  with one or more banks with
          respect to such shares; and

      o   that they make sales only by one or more of the methods  described  in
          this  Prospectus,  as  appropriately   supplemented  or  amended  when
          required.

      Other than in  circumstances  where we may  receive  certain  benefits  in
connection  with price  guaranty  arrangements,  we will not  receive any of the
proceeds from any sale of shares offered by a Selling Stockholder.

      Selling Stockholders may sell shares:

      o   on one or more exchanges or otherwise;

      o   directly to purchasers in negotiated transactions;

      o   by or through brokers or dealers, in ordinary brokerage transactions 
          or transactions in which the broker or dealer solicits purchasers;

      o   in block  trades in which the  broker or dealer  will  attempt to sell
          shares as agent but may  position and resell a portion of the block as
          principal;

      o   in transactions in which a broker or dealer purchases as principal for
          resale for its own account;

      o   through underwriters or agents; or

      o   in any combination of these methods.

      Shares may be sold at a fixed offering price, which may be changed, at the
prevailing  market  price  at the  time  of  sale,  at  prices  related  to such
prevailing  market  price  or  at  negotiated  prices.  Any  brokers,   dealers,
underwriters  or  agents  may  arrange  for  others to  participate  in any such
transaction and may receive  compensation in the form of discounts,  commissions
or concessions from Selling  Stockholders  and/or the purchasers of shares.  The
proceeds to a Selling Stockholder from any sale of shares will be reduced by any
such compensation and by any expenses to be borne by the Selling Stockholder.

      If  required  at the time that a  particular  offer of  shares is made,  a
supplement  to this  Prospectus  will be delivered  that  describes any material


                                       14
<PAGE>

arrangements  for the  distribution  of shares  and the  terms of the  offering,
including  the names of any  underwriters,  brokers,  dealers  or agents and any
discounts,  commissions or concessions and other items constituting compensation
from the Selling Stockholder.

      Selling Stockholders and any brokers, dealers, underwriters or agents that
participate  with a Selling  Stockholder  in the  distribution  of shares may be
deemed to be  "underwriters"  within the meaning of the Securities Act, in which
event any discounts,  commissions  or concessions  received by any such brokers,
dealers,  underwriters  or agents  and any  profit on the  resale of the  shares
purchased  by them may be deemed to be  underwriting  commissions  or  discounts
under the Securities Act.

      We may agree to indemnify  Selling  Stockholders  and/or any such brokers,
dealers,  underwriters  or agents against certain civil  liabilities,  including
liabilities under the Securities Act, and to reimburse them for certain expenses
in connection with the offering and sale of shares.

      Selling  Stockholders  may also  offer and sell  shares  of  Common  Stock
covered by this Prospectus under  exemptions from the registration  requirements
of the  Securities  Act,  including  sales which meet the  requirements  of Rule
145(d) under the Securities Act.

DESCRIPTION OF CAPITAL STOCK

      GENERAL

      As of January 4, 1999,  we were authorized to  issue 300,000,000 shares of
Common Stock, of which 177,532,199 shares were issued  and  outstanding.  Of the
unissued shares of Common Stock:

      o   10,481,013  shares were reserved for issuance  upon  conversion of our
          4-1/2% Convertible Subordinated Notes due 2001;

      o   1,200,000  shares were reserved for issuance upon exercise of warrants
          expiring September 17, 2007;

      o   31,050 shares were  reserved for issuance  upon  exercise of currently
          exercisable  warrants  at  an  exercise  price  of  $36.53  per share,
          expiring February 11, 2002; and

      o   an  aggregate of  15,923,555  shares were  reserved for issuance  upon
          exercise of options  either  outstanding or available for grant to our
          officers, directors and employees.

COMMON STOCK

      The  holders of our Common  Stock  receive one vote for each share held of
record  by them on all  matters  to be  voted on by  stockholders.  Stockholders
cannot use cumulative voting in electing directors - as a result, the holders of
shares  having  more than 50% of our voting  power  (including  both  common and
voting preferred  shares, if any) voting for the election of directors can elect
all of the directors.

      The holders of our Common  Stock may receive  dividends if declared by the
Board of Directors out of legally  available funds,  subject to any prior rights
of preferred stockholders. If we liquidate, dissolve or wind up our affairs, the
holders 

                                       15
<PAGE>

of Common Stock are entitled to share ratably in all assets remaining  available
for  distribution  to them after payment of liabilities  and after provision has
been made for each  class of stock,  including  any  preferred  stock,  that has
preference  over our  Common  Stock.  Except as  described  below  under  "Stock
Purchase  Rights" and "Rights  Plan,"  holders of shares of Common Stock have no
conversion, preemptive or other subscription rights, and there are no redemption
or sinking fund provisions applicable to our Common Stock.

      We currently  intend to retain earnings to provide funds for the operation
and expansion of our business.  Accordingly,  we do not  anticipate  paying cash
dividends on the Common  Stock in the  foreseeable  future.  Any payment of cash
dividends  on the Common  Stock in the future  will  depend  upon our  financial
condition, earnings, capital requirements and such other factors as our Board of
Directors  deems  relevant.   Our  Amended  and  Restated  Multicurrency  Credit
Agreement,  dated as of October 20, 1997, imposes, and any future debt or equity
instruments  or  securities  may  impose,  restrictions  on our  ability  to pay
dividends.

      PREFERRED STOCK

      Shares of preferred stock may be issued without stockholder approval.  Our
Board of Directors is  authorized to issue such shares in one or more series and
to fix the rights,  preferences,  privileges,  qualifications,  limitations  and
restrictions  thereof,  including dividend rights and rates,  conversion rights,
voting rights, terms of redemption,  redemption prices,  liquidation preferences
and the  number of shares  constituting  any series or the  designation  of such
series, without any vote or action by the stockholders. We have no current plans
for the issuance of any shares of preferred  stock.  Any  preferred  stock to be
issued could rank prior to the Common Stock with respect to dividend  rights and
rights of liquidation. Our Board of Directors, without stockholder approval, may
issue  preferred  stock with voting and conversion  rights that could  adversely
affect the voting  power of holders  of Common  Stock or create  impediments  to
persons seeking to gain control of us.



                                       16
<PAGE>

      STOCK PURCHASE RIGHTS

      Laidlaw,  which,  as of January 4, 1999,  held 2,806,263  shares of Common
Stock, or 1.6% of the outstanding  Common Stock,  has certain rights to purchase
our voting securities in order to maintain its percentage voting interest. If we
sell or issue shares of voting securities, Laidlaw has the right to purchase, on
the same terms as the sale or issuance,  that number of shares or rights as will
maintain  its  percentage  interest  in  our  voting  securities,  assuming  the
conversion  of all  convertible  securities  and the exercise of all options and
warrants  then  outstanding.  Laidlaw's  right  does  not  apply  in the case of
mergers, acquisitions or employee stock option or stock bonus plans.

      Laidlaw has additional  purchase rights if we sell or issue  securities at
prices below 85% of the current  market price at the time of sale or issuance or
the prevailing customary price for such securities or their equivalent.

      CERTAIN VOTING ARRANGEMENTS

      As part of our acquisition of Smogless  S.p.A. in September 1994,  Laidlaw
agreed to vote its shares for our Board's  nominees for  election.  On all other
matters,  Laidlaw  agreed to vote in the same  proportion  as the votes  cast by
other holders of voting securities, other than those that relate to any business
combination  or  similar  transaction  involving  us or  any  amendment  to  our
Certificate of Incorporation (Charter) or By-laws.

      In September 1997, we acquired  47,000 acres of  agricultural  land in the
southwestern  United States for  8,000,000  shares of Common Stock and 1,200,000
warrants. In connection with that acquisition, we agreed, so long as the parties
from whom we acquired the land own at least 5% of our outstanding  Common Stock,
to nominate a person designated by the parties for election to our Board.

      The parties designated Ardon E. Moore and our Board appointed him to serve
as a Class I director  until our Annual  Meeting in 2000.  If the parties own at
least 7 1/2% of our  outstanding  Common  Stock and a vacancy  occurs due to the
termination of service of one of our  non-employee  directors,  the parties must
also  approve the person  filling such  vacancy.  If the  non-employee  director
creating the vacancy is the existing designee of the parties,  the vacancy would
be filled with a successor designee.

      In addition, the parties agreed to vote all of their shares as recommended
by a majority of the members of our Board,  except with respect to  transactions
involving  the  sale  of all or  substantially  all of  our  assets,  merger  or
acquisition  transactions  in which we are not the survivor or the parent of the
survivor  (unless the holders of our stock prior to such a transaction  continue
to  own  80%  or  more  of  the  outstanding  voting  stock  of  the  survivor),
transactions  involving the issuance by us of Common Stock  representing  20% or
more of the  outstanding  Common  Stock (or  equivalents),  or  amendment of our
Charter or By-laws.


                                       17
<PAGE>

      CERTAIN CHARTER AND BY-LAW PROVISIONS

      Our Charter places certain restrictions on the voting rights of a "Related
Person," defined as any person who directly or indirectly  beneficially  owns 5%
or more of our outstanding voting stock. Our founders and original directors are
excluded  from  the  definition  of  "Related   Persons,"  as  are  seven  named
individuals  including Richard J. Heckmann,  our Chairman of the Board and Chief
Executive Officer.

      These voting  restrictions  apply in two  situations.  First, if the Board
votes to call a meeting of stockholders to consider a proposal by a director who
is also a Related  Person,  the vote of a director who is also a Related  Person
will not count.  Second,  any  changes to our Charter  that relate to  specified
Articles  therein  (those  dealing  with  corporate  governance,  limitation  of
director liability or amendments to the Charter), must be approved by a majority
of our Board then in office,  a majority  of our  outstanding  voting  stock and
either:

      o   a majority of the authorized  number of directors (and, if one or more
          Related  Persons  exist,  by a majority of the  directors  who are not
          Related Persons); or

      o   the holders of at least 80% of our outstanding voting stock.

In addition, the Charter provides that any changes to our By-laws be approved by
one of the methods  specified above. If any change in the Charter or By-laws was
proposed by or on behalf of a Related Person,  then approval by the holders of a
majority of the  outstanding  voting  stock not held by Related  Persons is also
required.

      Our Charter and By-laws  also  provide that our Board shall fix the number
of  directors  and that the Board  shall be  divided  into three  classes,  each
consisting of one-third of the total number of directors (or as nearly as may be
possible).  Stockholders  may not take  action by written  consent.  Meetings of
stockholders may be called only by our Board, or a majority of its members.

      Stockholder proposals,  including director nominations,  may be considered
at a meeting only if written  notice of that proposal is delivered to us from 30
to 60 days in advance of the meeting,  or, in certain  circumstances,  within 10
days  after  notice  or  public  disclosure  of the  meeting  is first  given to
stockholders.

      RIGHTS PLAN

      On December 11,  1998,  we made a dividend  distribution  of one Right for
each  outstanding  share of our Common Stock.  Each Right entitles its holder to
purchase  from  us  one  one-thousandth  of a  share  of  our  Series  A  Junior
Participating Preferred Stock, at a purchase price of $80 subject to adjustment.

      In addition,  so long as the Rights are attached to our Common Stock,  one
additional  Right  (as  such  number  may be  adjusted  pursuant  to the  Rights
Agreement)  shall be deemed to be  delivered  for each share of our Common Stock
issued or transferred by us in the future.  300,000 shares of Series A Preferred
Stock were initially reserved for issuance upon exercise of the Rights.


                                       18
<PAGE>

      The  description  and  terms  of the  Rights  are set  forth  in a  Rights
Agreement  between  us and The  Bank  of New  York,  as our  Rights  Agent.  The
following summary of the Rights is not complete and is qualified in its entirety
by reference to the complete text of the Rights Plan and the exhibits attached
to the Rights Plan.

      The Rights  are  not exercisable  until the Distribution  Date, which will
occur upon the earlier of:

      o   10 days following a Stock  Acquisition  Date - the date on which it is
          publicly announced that an Acquiring Person has acquired,  or obtained
          the  right  to  acquire,  beneficial  ownership  of 15% or more of our
          Common Stock; or

      o   10 business  days (or any later date our Board  determines)  following
          the commencement of a tender offer or exchange offer that would result
          in a person or group becoming an Acquiring Person.

      An  Acquiring  Person is any person or entity  beneficially  owning 15% or
more of our Common Stock,  subject to certain exceptions described in the Rights
Agreement.

      Until a Right is exercised,  the holder has no rights as a stockholder  of
our company,  including  the right to vote or to receive  dividends.  The Rights
will expire at the close of business on November  27, 2008,  unless  redeemed or
exchanged by us at an earlier time.

      If a person  becomes an  Acquiring  Person  (except  pursuant  to  certain
offers),  each holder of a Right  (other than the  Acquiring  Person and certain
related  parties) will be entitled after the Rights are no longer  redeemable to
receive, upon exercise, at the option of our Board:

       o   Common Stock;

       o   One one-thousandth of a share of our Series A Preferred Stock; and/or

       o   Cash, property or any other of our securities.

Each of these three  options  would have a value equal to two times the exercise
price of the Right.

      For  example, at an  exercise  price  of $80 per  Right,  each  Right  not
beneficially  owned by an  Acquiring  Person  (or by  certain  related  parties)
following an event set forth in the preceding paragraph would entitle its holder
after the Rights are no longer  redeemable  to purchase $160 worth of our Common
Stock (or other consideration, as noted above) for $80. Assuming that our Common
Stock had a per share value of $20 at that time,  the holder of each valid Right
would be entitled to purchase 8 shares of our Common Stock for $80.

      If at any time following a Stock Acquisition Date:

       o   we are acquired in a merger or other business combination transaction
           in which we are not the surviving corporation; or

                                       19
<PAGE>

       o   50% or more of our  assets,  cash  flow or  earning  power  is sold 
           or transferred; then

each holder of a Right (except Rights  beneficially owned by an Acquiring Person
or certain  related  parties)  would have the right to receive,  upon  exercise,
common  stock of the  acquiring  company  having a value  equal to two times the
exercise price of the Right.

      At any  time  after a person becomes an Acquiring  Person and prior to the
acquisition  by such  person or group of 50% or more of our  outstanding  Common
Stock, our Board may exchange the Rights (other than Rights owned by such person
or group which have become void),  in whole or in part, at an exchange  ratio of
one share of our  Common  Stock,  or one  one-thousandth  of a share of Series A
Preferred Stock, per Right (subject to adjustment).

      At  any  time until 10 days following the Stock  Acquisition  Date, we may
redeem  the  Rights  in  whole,  but not in part,  at a price of $.01 per  Right
(payable in cash, our Common Stock or other consideration  deemed appropriate by
our  Board).  Redemption  of the Rights may also occur after  November  27, 2000
through a stockholder  referendum if we receive a qualifying offer from a person
owning less than 5% of our Common Stock.

      Immediately upon the action of our Board ordering redemption of the Rights
or the  effectiveness  of the redemption of Rights  pursuant to the  stockholder
referendum,  the Rights  will  terminate  and the only  right of the  holders of
Rights will be to receive the $.01 redemption price.

      Any of the  provisions of the Rights Agreement may be amended by our Board
prior to the Distribution  Date. After the Distribution  Date, the provisions of
the Rights Agreement may be amended by our Board in order to cure any ambiguity,
to make  changes  which do not  adversely  affect  the  interests  of holders of
Rights,  or to shorten or lengthen any time period  under the Rights  Agreement;
provided,  however, that no amendment may be made at such time as the Rights are
not redeemable.

      The Rights may have certain  anti-takeover effects.  The Rights will cause
substantial  dilution  to a person or group  that  attempts  to  acquire us in a
manner  which  causes  the  Rights to  become  exercisable  unless  the offer is
conditioned  on a  substantial  number of Rights  being  acquired.  The  Rights,
however, should not affect any prospective offeror willing to make an offer at a
fair price and  otherwise in the best  interests of us and our  stockholders  as
determined by a majority of our directors who are not affiliated with the person
making the offer, or who is willing to negotiate with our Board.

      The Rights  should  not  interfere  with  any  merger  or  other  business
combination  approved by our Board since our Board may, at its option, amend the
Rights  Agreement  prior to the  Distribution  Date, or redeem all (but not less
than all) of the  then-outstanding  Rights at any time  until 10 days  after the
Stock Acquisition Date.

      DELAWARE ANTI-TAKEOVER LAW

      In general, Section 203 of the Delaware General  Corporation Law 

                                       20
<PAGE>

provides that a stockholder  acquiring more than 15% of the  outstanding  voting
shares of a corporation subject to the statute (an Interested Stockholder),  but
less than 85% of such shares, may not engage in certain "Business  Combinations"
with the  corporation for a period of three years after the date the stockholder
became an Interested Stockholder unless:

      o   prior to such date,  the  corporation's  Board of  Directors  approved
          either  the  Business  Combination  or the  transaction  in which  the
          stockholder became an Interested Stockholder; or

      o   the corporation's Board of Directors approves the Business Combination
          and at least two-thirds of the  corporation's  voting stock (not owned
          by the Interested Stockholder) authorizes it.

      Section 203 defines "Business  Combination" to encompass a wide variety of
transactions with or caused by an Interested Stockholder in which the Interested
Stockholder receives or could receive a greater benefit than other stockholders,
including:

      o   mergers;

      o   certain asset sales;

      o   certain issuances of additional shares to the Interested Stockholder;

      o   transactions  with  the  corporation  that increase the  proportionate
          interest of the Interested Stockholder; or

      o   transactions  in  which  the  Interested  Stockholder receives certain
          other benefits.

      These  provisions could delay,  defer or prevent a change of control.  Our
stockholders,  by adopting an amendment to the Charter or the By-laws, may elect
not to be governed by Section 203, which would be effective  twelve months after
adoption.  Neither the Charter  nor the By-laws  currently  excludes us from the
restrictions imposed by Section 203.

VALIDITY OF COMMON STOCK

      Our  counsel,  Kirkpatrick  & Lockhart  LLP, has given an opinion that the
shares of Common Stock covered by this Prospectus,  when authorized by our Board
(or a duly  appointed  committee  thereof)  and  issued as  contemplated  in the
Registration Statements, will be validly issued, fully paid and non-assessable.

EXPERTS

      The consolidated  financial statements of United States Filter Corporation
and its  subsidiaries  as of March  31,  1997 and 1998 and for each of the three
years in the period ended March 31, 1998,  have been  incorporated  by reference
herein and in the  Registration  Statement in reliance  upon the reports of KPMG
LLP, independent certified public accountants, which as to years ended March 31,
1997  and 1996  are  based  in part on the  reports  of  Ernst  and  Young  LLP,
independent auditors,  incorporated herein and in the Registration  Statement by


                                       21
<PAGE>
reference,  given upon the authority of said firms as experts in accounting  and
auditing.

      The  consolidated  financial  statements  of The Kinetics  Group,  Inc. at
September  30, 1997 and for each of the two years in the period ended  September
30, 1997  incorporated  by  reference  herein have been audited by Ernst & Young
LLP, independent  auditors, as set forth in their report thereon incorporated by
reference  herein,  and are included in reliance upon such report given upon the
authority of such firm as experts in accounting and auditing.

      The  consolidated  financial  statements of Memtec  Limited as of June 30,
1997 and 1996 and for each of the three years in the period  ended June 30, 1997
incorporated  by  reference  herein have been so  incorporated  by  reference in
reliance   on  the   report,   issued   in  the  name   Price   Waterhouse,   of
PricewaterhouseCoopers,  independent accountants, given on the authority of said
firm as experts in auditing and accounting.














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