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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 15


CERTIFICATION  AND NOTICE OF TERMINATION OF REGISTRATION  UNDER SECTION 12(g) OF
THE SECURITIES  EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER
SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

                                                Commission File Number 333-71957

                         DOMINGUEZ SERVICES CORPORATION
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)


    1720 North First Street, San Jose, California 95112-5498, (408) 367-8200
- --------------------------------------------------------------------------------
  (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)

                                  Common Stock
- --------------------------------------------------------------------------------
            (Title of each class of securities covered by this Form)

                                      None
- --------------------------------------------------------------------------------
  (Titles of all other classes of securities for which a duty to file reports
                     under section 13(a) or 15(d) remains)

         Please place an X in the  box(es) to  designate  the  appropriate  rule
provision(s) relied upon to terminate or suspend the duty to file reports:

         Rule 12g-4(a)(1)(i)   [X]           Rule 12h-3(b)(1)(i)   [ ]
         Rule 12g-4(a)(1)(ii)  [ ]           Rule 12h-3(b)(1)(ii)  [ ]
         Rule 12g-4(a)(2)(i)   [ ]           Rule 12h-3(b)(2)(i)   [ ]
         Rule 12g-4(a)(2)(ii)  [ ]           Rule 12h-3(b)(2)(ii)  [ ]
                                             Rule 15d-6            [ ]

         Approximate  number of  holders  of record as of the  certification  or
notice date: None (merged out)

         Pursuant to the  requirements  of the  Securities  Exchange Act of 1934
Dominguez Services Corporation has caused this certification/notice to be signed
on its behalf by the undersigned duly authorized person.

Date:   May 25, 2000              By: /s/ Gerald F. Feeney
      -----------------------         ----------------------------------------
                                      Gerald F. Feeney,
                                      VP/CFO-California Water Service Group on
                                      behalf of Dominguez Services Corporation


Instruction:  This  form is  required  by Rules  12g-4,  12h-3  and 15d-6 of the
General Rules and  Regulations  under the  Securities  Exchange Act of 1934. The
registrant  shall file with the Commission three copies of Form 15, one of which
shall be manually signed.  It may be signed by an officer of the registrant,  by
counsel or by any other duly authorized person. The name and title of the person
signing the form shall be typed or printed under the signature.




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