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

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                               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): August 18, 2006

                        SOUTHWEST WATER COMPANY
        (Exact Name of Registrant as Specified in Its Charter)


        Delaware                 0-8176                 95-1840947
(State of Incorporation)    (Commission File         (I.R.S. Employer
                                 Number)            Identification No.)

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

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

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         (Former name, former address and former fiscal year,
                  if changed since last report date)

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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:

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)

[ ] Soliciting material pursuant to Rule 425 under the Securities Act (17 CFR
240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(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))

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Item 8.01    Other Events

On August 18, 2006 the Company issued a press release announcing a
quarterly common share cash dividend of $0.0524 per share. The
Company's Board of Directors also declared a quarterly cash dividend
of $0.65625 per Share of Series A preferred stock. The cash dividends
will be paid on October 20, 2006, to stockholders of record on
September 30, 2006.

The information contained in the news release is incorporated herein
by reference and furnished as Exhibit 99.1.


Item 9.01    Financial Statements and Exhibits

(c)    Exhibits

Exhibit
  No.                                    Description
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99.1     Press release dated August 18, 2006, announcing quarterly cash
         dividends.







                               SIGNATURE

     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 hereto duly authorized.


                                   SOUTHWEST WATER COMPANY
                                   (Registrant)

                                   By:   /s/ Cheryl L. Clary
                                         ---------------------------------------
                                         Name: Cheryl L. Clary
                                         Title: Chief Financial Officer

Date: August 18, 2006