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): November 23, 1999 CALIFORNIA WATER SERVICE GROUP (Exact name of registrant as specified in its charter) Delaware 1-13883 77-0448994 State of Incorporation Commission File No. IRS Employer ID Number 1720 North First Street, San Jose, CA 95112 Address, including Zip code, of registrant's principal executive office (408) 367-8200 Registrant's telephone number, including area code Item 5. Other Events On November 23, 1999, Registrant issued a press release announcing that on November 23, 1999, Registrant had completed all actions to reincorporate itself as a Delaware corporation. From November 23, 1999 forward, Group will operate as a Delaware corporation. The reincorporation had been approved by shareholders at their annual meeting in April 1999. Item 7. Financial Statements and Exhibits Press release issued by the Registrant on November 23, 1999. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this current report to be signed on its behalf by the undersigned hereunto duly authorized. Date: November 23, 1999 California Water Service Group By:/s/Peter C. Nelson Peter C. Nelson President and Chief Executive Officer Exhibit Index Sequential Page Number Exhibit No. 1. Press release issued by the Registrant on November 23, 1999. 5 NEWS RELEASE CALIFORNIA WATER SERVICE GROUP 1720 North First Street San Jose, CA 95112-4598 November 23, 1999 For Immediate Release Contact: Gerry Feeney (408) 367-8216 Vice President & CFO CAL WATER COMPLETES DELAWARE REINCORPORATION SAN JOSE, CA (November 23, 1999) - California Water Service Group (NYSE - CWT) announced that today it had completed the process to reincorporate Group as a Delaware corporation. The reincorporation, which was approved by shareholders at their annual meeting in April, has a number of advantages for Group: the Delaware legislature is responsive to business needs and acts quickly to enact relevant new laws; Delaware has the most extensive case law on corporate issues of any state, thereby providing corporations with more certainty about the application of laws in specific circumstances; state courts that specialize in corporate law have developed an expertise in dealing with corporate issues; and the state has developed a sharper definition of director responsibilities so that boards may act with greater certainty on issues affecting shareholders. California Water Service Group is the parent company of California Water Service Company, CWS Utility Services and Washington Water Service Company serving approximately 1.5 million people in 60 California and Washington communities. Group is the largest investor owned water utility in the western states. Group's common stock trades on the New York Stock Exchange under the symbol CWT. More information may be found at www.calwater.com.