District Information


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Los Altos

949 B Street
Los Altos, CA 94024

Customer Service
7:00 a.m. to 7:00 p.m.
(650) 917-0152
Contact us via email

District Manager
Dawn Smithson

After-Hours Phone Number
(650) 917-0152

Automated Payment Number
(888) 598-9824

Payment Mailing Address
California Water Service
P.O. Box 7229
San Francisco, CA 94120-7229

Los Altos phone service is closed for the weekend.

If you have a water-related emergency, please contact Cal Water using the Los Altos after-hours phone number.

Infrastructure Improvements

Serving Los Altos and portions of Cupertino, Los Altos Hills, Mountain View, and Sunnyvale

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 297 miles of pipeline, 65 booster pumps, and 46 storage tanks. We proactively maintain and upgrade our facilities to ensure a reliable, high-quality supply.

Closest Western Union Pay Stations

Note: In addition to the locations listed below, you can also make a payment at any Western Union nationwide that offers its Quick Collect service.

Business Address City ZIP Code
Safeway #2814160 1st StLos Altos94022
Walgreens #7088303 2nd StLos Altos94022
Rite Aid #58862310 Homestead RdLos Altos94024
Rite Aid #58862310 Homestead RdLos Altos94024
Jennifer Joyeria1923 Latham StMountain View94040
La Plaza Market #240 S Rengstorff AveMountain View94040
Liquor And Food Mart2339 California StMountain View94040
Safeway #11081750 Miramonte AveMountain View94040
Safeway #2948645 San Antonio RdMountain View94040
Walgreens #139481905 W El Camino RealMountain View94040
Walgreens #689121 E El Camino RealMountain View94040
Walmart #002280600 Showers DrMountain View94040
Liquor & Food734 S Fair Oaks AveSunnyvale94086
408 Liquor1053 E El Camino Real Ste 1Sunnyvale94087
Galamart1193 W El Camino RealSunnyvale94087
Safeway #1196639 S Bernardo AveSunnyvale94087
Safeway #1439785 E El Camino RealSunnyvale94087
Safeway #2887150 E El Camino RealSunnyvale94087
Sneha's Gifts And Wine1175 E Homestead RdSunnyvale94087
Walgreens #33801306 S Mary AveSunnyvale94087
Walgreens #7080105 E El Camino RealSunnyvale94087
Rite Aid #596720572 Homestead RdCupertino95014
Rite Aid #596720572 Homestead RdCupertino95014
Safeway #325120620 Homestead RdCupertino95014
Walgreens #441620011 Bollinger RdCupertino95014