SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

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

Date of report: August 18, 2004

(Date of earliest event reported)

SOUTHWEST WATER COMPANY

(Exact name of registrant as specified in its charter)

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

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

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

ITEM 5. OTHER EVENTS AND REQUIRED FD DISCLOSURE

Attached as Exhibit 1.1 hereto and incorporated by reference herein is the Underwriting Agreement, dated August 18, 2004, by and among the Company and the underwriters named in Schedule A thereto, relating to the public offering of 1,700,000 shares of the Company’s common stock, par value $0.01 per share, pursuant to the Company’s Registration Statement on Form S-3 (File No. 333-111586).

Attached as Exhibit 99.1 hereto and incorporated by reference herein is the Prospectus Supplement, dated August 18, 2004 relating to the public offering of 1,700,000 shares of the Company’s common stock, par value $0.01 per share, pursuant to the Company’s Registration Statement on Form S-3 (File No. 333-111586).

ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS.

1.1 Underwriting Agreement, dated August 18, 2004

99.1 Prospectus Supplement

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 hereunto duly authorized.

Dated: August 19, 2004
	SOUTHWEST WATER COMPANY


	By:	/s/ Richard J. Shields
		Richard J. Shields
		Chief Financial Officer