EXHIBIT 32.2
CERTIFICATION OF CHIEF FINANCIAL OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report on Form 10-Q for the fiscal quarter ended September
30, 2006 of California Water Service Group (the Company) as filed with the Securities and
Exchange Commission on the date hereof (the Report), I, Martin A. Kropelnicki, Chief Financial
Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section
906 of the Sarbanes-Oxley Act of 2002, that:
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The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities
Exchange Act of 1934; and |
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The information contained in the Report fairly presents, in all material respects, the
financial condition and results of operations of the Company. |
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Date: November 9, 2006
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By:
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/s/ Martin A. Kropelnicki
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MARTIN A. KROPELNICKI
Chief Financial Officer
California Water Service Group |
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A signed original of this written statement required by Section 906 has been provided to California
Water Service Group and will be retained by the Company and furnished to the Securities and
Exchange Commission or its staff upon request.