UNITED STATES FILTER CORP
POS AM, 1999-01-08
REFRIGERATION & SERVICE INDUSTRY MACHINERY
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As filed with the Securities and Exchange Commission on January 8, 1999
    
                                                      Registration No. 333-67443
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------
   
                                 POST-EFFECTIVE
                                 AMENDMENT NO. 1
    
                                       TO
                                    FORM S-4
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                              ---------------------
                        UNITED STATES FILTER CORPORATION
             (Exact name of registrant as specified in its charter)



DELAWARE                        3589                        33-0266015
- --------                        ----                        ----------
(State or other                (Primary Standard            (I.R.S. Employer
jurisdiction                   Industrial                   Identification No.)
of incorporation               Classification          
or organization)               Code Number)

                               40-004 COOK STREET
                          PALM DESERT, CALIFORNIA 92211
                                 (760) 340-0098
          (Address, including zip code, and telephone number, including
            area code, of registrant's principal executive offices)
                            -------------------------
                               DAMIAN C. GEORGINO
                    EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL
                             AND CORPORATE SECRETARY
                        UNITED STATES FILTER CORPORATION
                               40-004 COOK STREET
                          PALM DESERT, CALIFORNIA 92211
                                 (760) 340-0098
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)
                            -------------------------

                                    Copy to:
                                JANICE C. HARTMAN
                           KIRKPATRICK & LOCKHART LLP
                              1500 OLIVER BUILDING
                         PITTSBURGH, PENNSYLVANIA 15222
                                 (412) 355-6500

APPROXIMATE  DATE OF COMMENCEMENT OF PROPOSED SALE TO PUBLIC:  From time to time
after this registration statement becomes effective.
<PAGE>

If the securities  being registered on this Form are being offered in connection
with the  formation of a holding  company and there is  compliance  with General
Instruction G, check the following box. /_/

      The registrant hereby amends this  registration  statement on such date or
dates as may be necessary to delay its effective date until the registrant shall
file a further  amendment  which  specifically  states  that  this  registration
statement shall  thereafter  become effective in accordance with Section 8(a) of
the Securities  Act of 1933 or until this  registration  statement  shall become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.

<PAGE>

   

    
PROSPECTUS

                                 [USFILTER LOGO]

                        UNITED STATES FILTER CORPORATION
                                  COMMON STOCK


   
                                6,397,873 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. We trade under the symbol "USF."

            AN  INVESTMENT IN THESE SHARES  INVOLVES  CERTAIN  RISKS.  SEE "RISK
FACTORS" AT 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 __, 1999.
    


<PAGE>













                                 [USFILTER LOGO]
                        UNITED STATES FILTER CORPORATION
                                  COMMON STOCK

                                   PROSPECTUS

   
                                6,397,873 SHARES
    








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

                                TABLE OF CONTENTS

About This Prospectus......................................................... 2
Where You Can Find More Information........................................... 2
The Company................................................................... 4
Risk Factors.................................................................. 5
Reselling Shares..............................................................13
Description of Capital Stock..................................................15
Validity of Common Stock......................................................20
Experts.......................................................................21

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



<PAGE>


ABOUT THIS PROSPECTUS

   
      Under  this  Prospectus,  we may offer and issue up to 6,397,873 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,  equity  securities,  contingent  rights or other
similar  instruments in connection with acquisitions,  we may reserve shares for
issuance to cover the 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.  This guaranty will be limited
in duration and may 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 United States  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

                                       2
<PAGE>

the SEC (the Registration  Statements) 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  (including any  post-effective  amendments) 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

                                       3
<PAGE>

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

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 on the  information contained in this Prospectus or that
we have  referred  you to. 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;  however,
this Prospectus 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 front 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 

                                       4
<PAGE>

also own a significant  amount of property with appurtenant  water rights in the
Western and Southwestern United States, 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  cycles 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              o   Real estate development
Distribution            o   Housing starts 
                        o   Winter months in temperate regions 
                        o   Industrial capital spending
                     
Consumer and            o   Consumer spending
Commercial              o   Housing starts
                     
Industrial              o   Microelectronics
Products and            o   Pharmaceutical
Services                o   Biotechnology
                        o   Municipal spending
                

                                       5
<PAGE>

        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  fixed-price
contract as we expected,  the profits under that contract could decrease,  or we
could  lose  money on that  contract.  When our  estimates  of cost  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, 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           o   Product quality and specifications
       Wastewater          o   Technology
       Treatment           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     o   Quality
      and Services         o   Service
                           o   Price
                       
       Waterworks          o   Prompt local service
      Distribution             capability
                           o   Product knowledge by sales force and
                               service branch management
                           o   Price
                       
     Consumer and          o   Price
      Commercial           o   Product quality
       Products            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,  

                                       6
<PAGE>

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;

      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  companies,  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 company,  that company 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 company and if we decide to acquire the company,  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 conduct  business in markets outside
the United States and we expect to continue to do so. The risks  associated with
conducting business outside the United States include:

      o     currency fluctuations;

      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 

                                       7
<PAGE>

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.

        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 (for
example, 12/31/99),  rather than eight (for example,  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). We are currently identifying which of our information  technology
("IT") and non-IT systems will be affected by Year 2000 issues.

        Most of our IT  systems  with Year 2000  issues  have been  modified  to
address those issues.  We have also 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  operated
and/or  owned  under  contract  by us  and  in  our  hazardous  waste  treatment
facilities, as well as components of equipment in our manufacturing facilities.

        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.

        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  occur
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.

        We have  completed the  identification  and assessment of most of our IT
systems, and those systems have been modified to address Year 2000 problems.  We
will  continue  to assess  the IT systems of  businesses  that we have  recently
acquired and that we may acquire in the future.

        We are in the  identification  and assessment  phase with respect to all
non-IT  systems,  which  is  projected  to  continue  until  September  1999 for
currently-owned  businesses.  With the possible exception of the remediation and
testing  phases for 

                                       8
<PAGE>

certain of our non-IT systems,  all phases of our Year 2000  compliance  program
are expected to be completed by September  1999,  although we can not assure you
that  all  phases  for  all  businesses  will be  completed  by  that  date.  In
particular,  we can not assure you that  acquired  businesses  will be Year 2000
compliant,  although we  currently  have a policy that  requires an  acquisition
candidate to represent that such 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 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.

                                       9
<PAGE>

        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.

        We have begun cleanup of the  contamination  and estimate that the costs
of future site  cleanup will range from $1.0  million to $1.8  million.  We have
sufficient financial reserves for site cleanup. We anticipate that the potential
costs of further  monitoring and corrective  measures to address the groundwater
problem will not have a 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,  based on all of the sites we know to require  cleanup,  including
the Anvil site, we do not believe that our liability relating to such sites will
be material to us. However, we cannot assure you that such sites 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 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.  We
also operate facilities owned by us, including service  deionization centers and
manufacturing  facilities,  that discharge wastewater in connection with routine
operations. Under certain service contracts and applicable environmental laws we
may  be  held  responsible  as  an  operator  of  such   facilities.   Potential
responsibilities  include  paying  the  fines  or  penalties  if the  facilities
malfunction  or  discharge   wastewater  which  fall  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

                                       10
<PAGE>

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. 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 different risks with municipalities than we do with
industrial  customers.  Competition  for  selection  of a  municipal  contractor
usually 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 acquired  in-process
research  and  development  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.

                                       11
<PAGE>

        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 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   Conveyance  risks  from  unavailable  or  inadequate  transportation
            facilities;

        o   Risks   presented  by   allocations  of  water  under  existing  and
            prospective priorities; and

        o   Risks of adverse  changes  to or  interpretations  of U.S.  federal,
            state and local laws, regulations and policies.

        The IID holds title to all of the water  rights  within the IID in trust
for the  landowners  and would control the amounts and terms of any transfers by
us of IID water. Transfer of IID water are subject to additional  uncertainties,
including:


         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  The approval of the U.S. Secretary of the Interior;

         o  The use of the Colorado  River  Aqueduct  owned by the  Metropolitan
            Water District of southern California, a quasi-governmental  agency;
            and

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

Even if a transfer of IID water were approved,  other California water districts
and users could assert claims adverse to the 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 the IID water  rights  and the
ability to transfer IID water.


                                       12
<PAGE>
        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 member
countries.  Beginning in January 2002, new euro-denominated bills and coins will
be issued, and legacy currencies will be withdrawn from circulation.

        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
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  42,538,512  shares  held or issuable on
November 2, 1998, including:

    NUMBER OF         
    SHARES OF             HOLDER AND/OR MANNER
  COMMON STOCK                 OF HOLDING
  ----------------------------------------------
                    
  o  Up to            Shares may be delivered:
     2,806,263         
                        o   in lieu of cash by Laidlaw Inc.
                            or its affiliates following the
                            maturity of Laidlaw's 5 3/4%
                            Exchangeable Notes due 2000; or
                      
                        o   in accordance with Rule 144(k)
                            of 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  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        Currently registered for sale under the 
                      Securities Act pursuant to a shelf 
                      registration statement.
                  
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 

                                       13
<PAGE>

            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 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 of 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
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.

                                       14
<PAGE>

            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 shares of Common Stock covered
by this Prospectus or 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 November 2, 1998, we were authorized to issue  300,000,000  shares
of Common Stock, of which  172,438,124  shares were issued and outstanding,  and
3,000,000  shares of preferred stock, of which none 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; and

        o    an aggregate of  15,950,210 shares were  reserved for issuance upon
             exercise of options either outstanding or available for grant.

        COMMON STOCK

        The holders of our Common Stock  receive one vote for each share held of
record by them on all voting  matters.  Directors  are not elected by cumulative
voting - 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 the prior rights
of preferred stockholders. If we liquidate, dissolve or wind up our affairs, the
holders 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,"  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.  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 the Board of  Directors  deems
relevant. Our Amended and Restated  Multicurrency 

                                       15
<PAGE>

Credit Agreement,  dated as of October 20, 1997, imposes, and any future debt or
equity investments 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. The 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.

        STOCK PURCHASE RIGHTS

        Laidlaw,  which, as of November 2, 1998, 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 

                                       16
<PAGE>

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 shall 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  most  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.

        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  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, President
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 amendments 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 our Board,
a majority of our outstanding voting stock and either:

        o   a majority of directors who are not Related Persons; or

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

If the change 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.  In  addition,  any  amendment to our By-laws must be
approved by one of the methods specified above.

        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 within ten days after  notice of the
meeting is first given to stockholders.

                                       17
<PAGE>

   
        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  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.

        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 which are 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 have the right 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.  

                                       18
<PAGE>

        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
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 the Stock Acquisition Date:

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

        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)  shall 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 

                                       19
<PAGE>

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 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:

        (a)   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

        (b)  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, will give an opinion that the
shares of Common Stock covered by this Prospectus are valid.

                                       20
<PAGE>

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
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.













                                       21
<PAGE>

















                                 [USFILTER LOGO]



<PAGE>

                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 20.  Indemnification of Directors and Officers.

     The  Certificate of  Incorporation  and the By-laws of United States Filter
Corporation  (the "Company")  provide for the  indemnification  of directors and
officers to the fullest extent  permitted by the General  Corporation Law of the
State of Delaware, the state of incorporation of the Company.

     Section  145 of the  General  Corporation  Law of  the  State  of  Delaware
authorizes  indemnification when a person is made a party or is threatened to be
made a party to any  proceeding by reason of the fact that such person is or was
a director,  officer,  employee or agent of the corporation or is or was serving
as a director,  officer, employee or agent of another enterprise, at the request
of the  corporation,  and if such  person  acted in good  faith  and in a manner
reasonably  believed  by  him or her to be in,  or  not  opposed  to,  the  best
interests of the  corporation.  With respect to any  criminal  proceeding,  such
person must have had no reasonable  cause to believe that his or her conduct was
unlawful.  If it is  determined  that the  conduct of such  person  meets  these
standards,  he or she  may  be  indemnified  for  expenses  incurred  (including
attorney's fees),  judgments,  fines and amounts paid in settlement actually and
reasonably incurred by him or her in connection with such proceeding.

     If such a  proceeding  is  brought  by or in the  right of the  corporation
(i.e.,  a derivative  suit),  such person may be  indemnified  against  expenses
actually  and  reasonably  incurred  if he or she  acted in good  faith and in a
manner  reasonably  believed by him or her to be in, or not opposed to, the best
interests of the corporation.  There can be no  indemnification  with respect to
any matter as to which such person is adjudged to be liable to the  corporation;
however,  a court may,  even in such case,  allow such  indemnification  to such
person for such expenses as the court deems proper.

     Where  such  person  is  successful  in any such  proceeding,  he or she is
entitled to be indemnified  against expenses actually and reasonably incurred by
him or her. In all other cases,  indemnification is made by the corporation upon
determination by it that  indemnification  of such person is proper because such
person has met the applicable standard of conduct.

     The Company  maintains  an errors and  omissions  liability  policy for the
benefit of its officers and  directors,  which may cover certain  liabilities of
such individuals to the Company.


                                      II-1
<PAGE>

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.

     (a)  Exhibits.   The   following   exhibits  are  filed  as  part  of  this
registration statement:

EXHIBIT
NUMBER                               DESCRIPTION
- -------                              -----------

5.01         Opinion of  Kirkpatrick & Lockhart LLP  as to  the  legality of the
             securities being registered (filed herewith)

23.01        Consent of Kirkpatrick & Lockhart LLP (included in Exhibit 5.01)

23.02        Consent of KPMG LLP (filed herewith)

23.03        Consent of Ernst & Young LLP (filed herewith)

23.04        Consent of PricewaterhouseCoopers (filed herewith)

24.01        Power of Attorney  (previously filed)


ITEM 22.  UNDERTAKINGS.

      The undersigned registrant hereby undertakes:

      (1)  To file, during any period in which offers or sales are being made, a
post-effective amendment to this registration statement:

           (i)   To include any  prospectus  required by section 10(a)(3) of the
                 Securities Act of 1933;

           (ii)  To reflect in  the prospectus any facts or events arising after
                 the effective date of  the registration  statement (or the most
                 recent post-effective amendment thereof) which, individually or
                 in   the  aggregate,  represent  a  fundamental  change  in the
                 information set forth in the registration statement;
          
           (iii) To include any  material  information  with respect to the plan
                 of  distribution  not previously  disclosed in the registration
                 statement or  any material  change to such  information  in the
                 registration statement.

                                      II-2
<PAGE>

      (2) That,  for  the  purpose  of  determining  any  liability   under  the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such  securities  at the time shall be deemed to be the initial bona
fide offering thereof.

      (3) To remove from registration by means of a post-effective amendment any
of the securities being registered which remain unsold at the termination of the
offering.

      (4) That, for purposes of determining  any liability  under the Securities
Act of 1933, each filing of the  registrant's  annual report pursuant to section
13(a)  or  section  15(d)  of the  Securities  Exchange  Act  of  1934  that  is
incorporated by reference in the registration  statement shall be deemed to be a
new registration  statement relating to the securities offered therein,  and the
offering of such  securities at that time shall be deemed to be the initial bona
fide offering thereof.

      (5) That  prior to any  public  reoffering  of the  securities  registered
hereunder  through  use of a  prospectus  which  is a part of this  registration
statement,  by any person or party who is deemed to be an underwriter within the
meaning of Rule 145(c),  the issuer  undertakes that such reoffering  prospectus
will contain the information called for by the applicable registration form with
respect to reofferings by persons who may be deemed underwriters, in addition to
the information called for by the other Items of the applicable form.

      (6) That every  prospectus  (i) that is filed  pursuant to  paragraph  (5)
immediately preceding, or (ii) that purports to meet the requirements of section
10(a)(3) of the Act and is used in  connection  with an  offering of  securities
subject to Rule 415, will be filed as a part of an amendment to the registration
statement and will not be used until such amendment is effective,  and that, for
purposes of determining  any liability  under the  Securities Act of 1933,  each
such post-effective amendment shall be deemed to be a new registration statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

      (7) To  respond  to  requests  for  information  that is  incorporated  by
reference  into the  prospectus  pursuant to Items 4,  10(b),  11, or 13 of this
Form,  within  one  business  day of receipt  of such  request,  and to send the
incorporated  documents by first class mail or other equally prompt means.  This
includes  information  contained in documents filed  subsequent to the effective
date  of the  registration  statement  through  the  date of  responding  to the
request.


                                      II-3
<PAGE>

      (8) To  supply  by  means  of  a  post-effective  amendment  all  required
information  concerning a transaction,  and the company being acquired  involved
therein, that was not the subject of and included in the registration  statement
when it became effective.

      Insofar as  indemnification  for liabilities  arising under the Securities
Act of 1933 may be permitted to directors,  officers and controlling  persons of
the  registrant  pursuant  to  the  foregoing  provisions,   or  otherwise,  the
registrant  has been advised that in the opinion of the  Securities and Exchange
Commission such indemnification is against public policy as expressed in the Act
and is, therefore,  unenforceable. In the event that a claim for indemnification
against such  liabilities  (other than the payment by the registrant of expenses
incurred or paid by a director,  officer or controlling person of the registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.




                                      II-4
<PAGE>



                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, the registrant
has duly caused this post-effective  amendment to be signed on its behalf by the
undersigned,  thereunto duly  authorized,  in the City of Palm Desert,  State of
California, on January 8, 1999.

                                  UNITED STATES FILTER CORPORATION

                                  By:   /s/ Richard J. Heckmann
                                        --------------------------------
                                        Richard J. Heckmann,
                                        Chairman of the Board and Chief
                                        Executive Officer

      Pursuant  to  the  requirements  of  the  Securities  Act  of  1933,  this
post-effective  amendment  has  been  signed  by the  following  persons  in the
capacities and on the dates indicated.

         Signature                      Capacity                   Date
- ----------------------------   --------------------------   ------------------


/s/ Richard J. Heckmann        Chairman of the Board and    January 8, 1999
- ----------------------------   Chief Executive Officer
Richard J. Heckmann            (Principal Executive
                               Officer) and a Director



/s/ Kevin L. Spence            Executive Vice President     January 8, 1999
- ----------------------------   and Chief Financial
Kevin L. Spence                Officer (Principal
                               Financial and Accounting
                               Officer)



             *                 President and Chief          January 8, 1999
- ----------------------------   Operating Officer -
Andrew D. Seidel               North American Wastewater
                               Group and a Director

<PAGE>

         Signature                      Capacity                   Date
- ----------------------------   --------------------------   ------------------


             *                 President and Chief          January 8, 1999
- ----------------------------   Operating Officer - North
Nicholas C. Memmo              American Process Water
                               Group and a Director



             *                 Director                     January 8, 1999
- ----------------------------
James E. Clark




             *                 Director                     January 8, 1999
- ----------------------------
John L. Diederich




             *                 Director                     January 8, 1999
- ----------------------------
Robert S. Hillas




             *                 Director                     January 8, 1999
- ----------------------------
Arthur B. Laffer




             *                 Director                     January 8, 1999
- ----------------------------
Ardon E. Moore



             *                 Director                     January 8, 1999
- ----------------------------
Alfred E. Osborne, Jr.




             *                 Director                     January 8, 1999
- ----------------------------
J. Danforth Quayle


<PAGE>
         Signature                      Capacity                   Date
- ----------------------------   --------------------------   ------------------



             *                 Director                     January 8, 1999
- ----------------------------
C. Howard Wilkins, Jr.



*/s/ Damian C. Georgino                                     January 8, 1999
- ----------------------------
By:  Damian C. Georgino
Attorney-in-Fact










<PAGE>


                                  EXHIBIT INDEX
                                  -------------


   EXHIBIT
   NUMBER                       DESCRIPTION
   -------                      -----------

     5.01   Opinion of  Kirkpatrick  & Lockhart  LLP as to the  legality  of the
            securities being registered (filed herewith)

    23.01   Consent of Kirkpatrick & Lockhart LLP (included in Exhibit 5.01)

    23.02   Consent of KPMG LLP (filed herewith)

    23.03   Consent of Ernst & Young LLP (filed herewith)

    23.04   Consent of PricewaterhouseCoopers (filed herewith)

    24.01   Power of Attorney (previously filed)



                                                                  
                                                                    Exhibit 5.01

                               January 8, 1999

United States Filter Corporation
40-004 Cook Street
Palm Desert, California 92211

Ladies and Gentlemen:

      We have acted as counsel to United States Filter  Corporation,  a Delaware
corporation (the "Company") in connection with Post-Effective Amendment No. 1 to
the Registration Statement on Form S-4 (File No. 333-67443),  to be filed by the
Company on January 8, 1999 (the  "Registration  Statement") with the Securities
and Exchange Commission pursuant to the Securities Act of 1933, as amended, with
respect  to an  aggregate  of up to  6,397,873  shares  (the  "Shares")  of  the
Company's Common Stock,  par value $.01 per share, and the associated  Preferred
Stock  Purchase  Rights  (the  "Rights")  that may be offered  and issued by the
Company from time to time in  connection  with the  acquisition  by the Company,
directly or indirectly,  of various  businesses or assets, or interests therein.
The Rights would be issued in accordance  with the Rights  Agreement dated as of
November 27, 1998 between the Company and The Bank of New York,  as Rights Agent
(the "Rights Agreement").

      We are familiar  with the  Registration  Statement  and have  reviewed the
Company's  Certificate  of  Incorporation  and  By-laws,  each  as  amended  and
restated, and the Rights Agreement.  We have also examined such other public and
corporate documents,  certificates,  instruments and corporate records, and such
questions  of law, as we have deemed  necessary  for purposes of  expressing  an
opinion on the matters  hereinafter set forth. In all examinations of documents,
instruments and other papers,  we have assumed the genuineness of all signatures
on original and certified documents and the conformity to original and certified
documents  of all copies  submitted  to us as  conformed,  photostatic  or other
copies.

      On the basis of the foregoing, we are of the opinion that the Shares, when
authorized  by the Board of Directors or duly  appointed  committee  thereof and
issued as  contemplated  in the  Registration  Statement,  and the Rights,  when
issued in accordance with the Rights  Agreement,  will be validly issued,  fully
paid and non-assessable.

<PAGE>

      We  consent  to  the  filing  of  this  opinion  as  Exhibit  5.01  to the
Registration  Statement and to the use of our name in the  Prospectus  forming a
part thereof under the caption "Validity of Common Stock."

                                    Yours truly,


                                    /s/ Kirkpatrick & Lockhart LLP





                                                                   Exhibit 23.02


                          INDEPENDENT AUDITORS' CONSENT

Board of Directors and Stockholders
United States Filter Corporation:

      We consent to the reference to our firm under the caption "Experts" in the
Post-Effective  Amendment  No.  1 to the  Registration  Statement  on  Form  S-4
(Registration  No.  333-67443)  and related  Prospectus  of United States Filter
Corporation  and to the  incorporation  by reference  herein of our report dated
June 1,  1998  and  subsequent  report  dated  June 1,  1998,  except  as to the
acquisition  of Culligan  described  in notes 9 and 21,  which is as of June 15,
1998,  relating  to the  consolidated  balance  sheets of United  States  Filter
Corporation  and  subsidiaries  as of March 31,  1997 and 1998,  and the related
consolidated  statements of operations,  shareholders' equity and cash flows for
each of the years in the  three-year  period ended March 31, 1998 which  reports
appear in the March 31,  1998 Annual  Report on Form 10-K and Current  Report on
Form  8-K/A  dated  June  15,  1998,  respectively,   of  United  States  Filter
Corporation, filed with the Securities and Exchange Commission.


/s/ KPMG LLP


Orange County, California
January 7, 1999






                                                                   Exhibit 23.03



                         CONSENT OF INDEPENDENT AUDITORS

      We consent to the reference to our firm under the caption "Experts" in the
Registration  Statement   (Post-Effective  Amendment  No.  1  to  Form  S-4  No.
333-67443) and related Prospectus of United States Filter Corporation and to the
incorporation  by reference  herein of our report dated  January 16, 1998,  with
respect to the financial  statements of The Kinetics Group, Inc. included in the
Current  Report on Form 8-K/A  dated  February 6, 1998 of United  States  Filter
Corporation, filed with the Securities and Exchange Commission.

                                                 /s/ Ernst & Young LLP

Walnut Creek, California
January 7, 1999





                                                                   Exhibit 23.04



                         CONSENT OF INDEPENDENT AUDITORS

      We hereby  consent to the  incorporation  by reference  in the  Prospectus
constituting  part of this  Registration  Statement on Form S-4 of United States
Filter  Corporation of our report,  issued in the name Price  Waterhouse,  dated
September 25, 1997 relating to the consolidated balance sheets of Memtec Limited
at June 30, 1997 and 1996 and the  related  consolidated  statements  of income,
cash flows and of  shareholders'  equity  for each of three  years in the period
ended  June 30,  1997,  which  appears  on page F-2 of the Form  8-K/A of United
States  Filter  Corporation  dated  February  6,  1998.  We also  consent to the
reference  to us, as Price  Waterhouse,  under  the  heading  "Experts"  in such
Prospectus.

/s/ PricewaterhouseCoopers

PricewaterhouseCoopers
Sydney
7 January 1999



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