California Water Service (Cal Water) is the largest regulated American water utility west of the Mississippi River and the third largest in the country. Formed in 1926, the San Jose-based company serves 484,900 customer connections through 28 Customer and Operations Centers throughout the state.
195 South N Street
Livermore, CA 94550-4649
For 24-hour emergency, customer service, or to report an outage please call 1-800-743-5000. Subscribe for mobile outage alerts here: http://ow.ly/P6rlC
24300 Clawiter Road
Hayward, CA 94545