California Water Service Company (Cal Water) is the largest investor-owned water utility in the western United States, and third largest in the nation. Formed in 1926, the San Jose-based company serves 500,000 customers through 28 Customer and Operations Centers throughout the state. Cal Water is the largest subsidiary of the California Water Service Group, which also includes Washington Water Service Company, New Mexico Water Service Company, Hawaii Water Service Company, and CWS Utility Services. As a whole, the Group provides high-quality regulated and non-regulated utility services to over 2 million people in 100 communities.
California Water Service Group Address
1720 North First Street San Jose, CA United States