UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                    FORM 8-K

                             CURRENT REPORT Pursuant
                          to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

         Date of Report (Date of Earliest Event Reported): May 20, 2008


                            SouthWest Water Company
             (Exact Name of Registrant as Specified in its Charter)

      Delaware                      000-8176                    95-1840947
  (State or other           (Commission File Number)         (I.R.S. Employer
  jurisdiction of                                         Identification Number)
   incorporation
  or organization

                              One Wilshire Building
                       624 South Grand Avenue, Suite 2900
                           Los Angeles, CA 90017-3782
                         (Address of principal executive
                                    offices)

        Registrant's telephone number, including area code (213) 929-1800


                                      None
         (Former name or former address, if changed since last report.)


Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2 below):

|_|  Written  communications  pursuant to Rule 425 under the  Securities Act (17
     CFR 230.425)

|_|  Soliciting  material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
     240.14a-12)

|_|  Pre-commencement communications pursuant to Rule 14-d(b) under the Exchange
     Act (17 CFR 240.14d-2(b))

|_|  Pre-commencement   communications  pursuant  to  Rule  13e-4(c)  under  the
     Exchange Act (17 CFR 240.13e-4(c))




Item 5.03         Amendments to Articles of Incorporation or Bylaws; Change In
                  Fiscal Year

Amendments to the Restated  Certificate of  Incorporation  (the  "Certificate of
Incorporation")  and Amended and  Restated  Bylaws (the  "Bylaws")  of SouthWest
Water Company (the  "Company") were approved by the Company's Board of Directors
("Board") on January 29, 2008 and by the  Company's  stockholders  at the annual
stockholder  meeting on May 20,  2008.  The  amendments  to the  Certificate  of
Incorporation  were  effective  upon filing of a Certificate of Amendment of the
Restated  Certificate  of  Incorporation  (the "Amended  Certificate")  with the
Delaware Secretary of State on May 20, 2008.

The changes to the Certificate of  Incorporation  and the Bylaws  declassify the
Company's Board of Directors.  The changes to the Bylaws were approved by way of
Amendment No. 5 to the Amended and Restated  Bylaws (the  "Amended  Bylaws") and
became effective upon the effectiveness of the Amended Certificate. The Board of
Directors  declassification will phase in over the next three annual stockholder
meetings  (including the 2008 annual stockholder  meeting),  with the first full
election of the entire Board of Directors in 2010.

The Amended  Certificate  and the Amended Bylaws are attached hereto as Exhibits
3.1 and 3.2  respectively.  The  description  of these  documents and applicable
changes  does not purport to be complete  and is  qualified  by reference to the
full text of the attached Amended Certificate and Amended Bylaws.

Item 9.01         Financial Statements and Exhibits

Exhibit Number    Exhibit
- --------------    -------

     3.1          Certificate of Amendment to Restated Certificate of
                  Incorporation of SouthWest Water Company.
     3.2          Amendment No. 5 to the Amended and Restated Bylaws of
                  SouthWest Water Company.




                                   SIGNATURES

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized

                                                SOUTHWEST WATER COMPANY

Date:  May 23, 2008                             By:   /s/William K. Dix
                                                   -----------------------------
                                                Name:    William K. Dix
                                                Its:     Vice President General
                                                         Counsel & Secretary