California Water Service Group ("Cal Water") is a holding company that was formed in 1997. It is a Delaware corporation and the parent company of California Water Service Company ("California Water"), Washington Water Service Company ("Washington Water"), New Mexico Water Service Company ("New Mexico Water") and CWS Utility Services. The four subsidiary companies provide regulated and non-regulated water service to more than 2 million people in 98 communities. The Company’s common stock trades on the New York Stock Exchange under the symbol "CWT."
California Water was organized in 1926 and is the largest investor-owned water utility in the western United States and third largest in the nation. It provides water utility services to 435,000 customers through 25 operating districts located throughout the state.
Formed in 1999 with the acquisitions of Harbor Water Company and South Sound Utility Company, Washington Water is the largest investor-owned water utility in Washington. It serves 14,000 regulated customers near Tacoma and Olympia and an additional 2,300 customers through operating agreements with owners of other water systems.

General Office 1720 North First Street
San Jose, CA 95112
(408) 367-8200