Water service in San Mateo County may be provided by the county water authority, individual municipal water departments, or rural water districts, depending on where a property is located. There are 5 Water Departments locations in San Mateo County, California.

Property owners in San Mateo County who are connecting a new building to public water or requesting a new meter installation should contact the applicable water department well in advance, as permit review, inspection scheduling, and tap fee collection may take several weeks before service can begin.

List of San Mateo County, California Water Departments

Camarillo Water Department

View Details Call Now (805) 388-5373

Camarillo Water Department

Address
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Hours

Ventura Water Department

View Details Call Now (805) 658-4773

Ventura Water Department

Address
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Hours

California State Water Department

View Details Call Now (805) 485-5114

California State Water Department

Address
Get Direction
Hours

Thousand Oaks Waste Water

View Details Call Now (805) 449-2201

Thousand Oaks Waste Water

Address
Get Direction
Hours

Calleugas Municipal Water Department

View Details Call Now (805) 488-6240

Calleugas Municipal Water Department

Address
Get Direction
Hours

Residents of San Mateo County who rely on private wells rather than a public water system should contact the county health department for information about voluntary testing programs. The county water department can advise on whether extending public water service to a private-well property is feasible in your area.

You may also find Water Departments locations in neighboring counties including Los Angeles, Ventura.