Los Altos District
Los Altos and portions of Cupertino, Los Altos Hills, Mountain View, and Sunnyvale
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Customer Center 949 B St. Los Altos, CA 94024 8 a.m. to 5 p.m. (650) 917-0152 infoLAS@calwater.com |
District Manager After Hours Phone Number |
Pay Stations
You can pay Cal Water bills at any of the pay stations listed below. Note that there is a $1 Western Union service charge to pay your bill at a pay station. Please notify your local Customer Center if you are paying an overdue bill at a pay station.
Jennifer Joyeria
1923 Latham Street
Mountain View, CA 94040
United Private Mail Service
663 South Bernardo Avenue
Sunnyvale, CA 94087
West Valley Postal Exp
415-112 North Mary Avenue
Sunnyvale, CA 94086
Quality Water
740 South Wolfe Road
Sunnyvale, CA 94086
New Video House
617 Caliente Drive
Sunnyvale, CA 94087
General Information
Cal Water's Los Altos Suburban District was formed in 1931 with the purchase of the Los Altos Water Company. To meet the needs of our customers in Los Altos and parts of Los Altos Hills, Cupertino, Mountain View, and Sunnyvale, we use a combination of local groundwater and imported water. Our imported water, which is treated surface water purchased from the Santa Clara Valley Water District (SCVWD), comes from SCVWD reservoirs and the San Joaquin-Sacramento River Delta. Our water system includes 295 miles of pipeline, 65 booster pumps, and 46 storage tanks. We proactively maintain and upgrade our facilities to ensure a reliable, high-quality supply.
Bill Inserts
Current bill inserts for Los Altos can be read online.

