CERTIFICATIONS
Published on March 15, 2005
Exhibit 32
CERTIFICATION
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the
undersigned certifies that this Annual Report on Form 10-K for the year ended
December 31, 2004 fully complies with the requirements of Section 13(a) or
15(d), as applicable, of the Securities Exchange Act of 1934 and that the
information contained in this Report fairly presents, in all material respects,
the financial condition and results of operations of California Water Service
Group.
Date: February 23, 2005 /s/ Peter C. Nelson
PETER C. NELSON
Chief Executive Officer
California Water Service Group
Date: February 23, 2005 /s/ Richard D. Nye
RICHARD D. NYE
Chief Financial Officer
California Water Service Group