California Water Service Subsidiary of California Water Service Group

California Water Service



Serving California for More than 90 Years

Founded in 1926, California Water Service (Cal Water) is the largest of our subsidiaries and serves about 2 million people through 22 districts, from Chico in the north to the Palos Verdes Peninsula in the south. We operate the Travis Air Force Base water system through a federal contract; all other districts are regulated by the California Public Utilities Commission.

California Water Service at a Glance

496,400 Customers
351,788 Water delivered annually (in thousand cubic meters)
100 Communities

Our Service Areas

A map of the service areas of Cal Water.
Chico
Willows
Oroville
Marysville
Redwood Valley
Dixon
Travis Air Force Base
Stockton
Livermore
Bayshore
Bear Gulch
Los Altos
Salinas
King City
Selma
Visalia
Kern River Valley
Bakersfield
Antelope Valley
Westlake
East Los Angeles
Rancho Dominguez
Headquarters: San Jose

Contact Information

Corporate Headquarters

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

For More Information

More information about Cal Water's services can be found on the main Cal Water website and The Cal Water Difference website.

Visit Cal Water

Visit The Cal Water Difference