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Water Retailers

The Santa Clara Valley Water District, as a countywide wholesale water and groundwater management agency, relies on local retailers (municipalities and private companies) to deliver water to homes and businesses throughout the county. These retailers enact and implement local water use ordinances. Residents and businesses can expect, over the coming weeks, for their local water provider to begin implementing measures to reach the regional 20 percent water use reduction target.  

We hope you find the following charts useful in determining the sources of your water. Just click on the city you live in and go from there.

For more information, links are provided below to different water company websites.

CampbellMilpitasSanta Clara
CupertinoMonte SerenoSaratoga
GilroyMorgan Hill Stanford
Los AltosMountain ViewSunnyvale
Los Altos HillsPalo Alto 
Los GatosSan Jose 

 

Campbell 

Water supplier:San Jose Water Company
(408) 279-7900
Source of waterBlend, primarily: SCVWD
Remainder: Well water
TreatmentChloramine
Chlorinated
Area served Entire city
Conservation rules and tips

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Cupertino 

Water supplier:San Jose Water Company
(408) 279-7900
Source of waterSCVWD
(2 wells for backup)
TreatmentChloramine
Area served South of Hwy 280
Conservation rules and tips

Water supplier:California Water Service Company
(650) 917-0152
Source of waterSCVWD
TreatmentChloramine
Area served From Homestead to Stevens Creek area
Conservation rules and tips

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Gilroy 

Water supplier:Gilroy Community Services Department
(408) 846-0400
Source of waterWell water
TreatmentChlorinated
Area served Entire city
Emergency Water Restriction Ordinance news release [PDF]

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Los Altos 

Water supplier:California Water Service Company
(650) 917-0152
Source of water72% SCVWD 28% well water
TreatmentChloramineChlorinated
Area served Entire city
City of Los Altos measures
Conservation rules and tips (Cal Water)

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Los Altos Hills 

Water supplier:Purissima Hills Water District
(650) 948-1217
Source of waterHetch Hetchy
TreatmentChloramine
Area served North to Stanford, east to Los Altos/Palo Alto boundary, south to Neary Quarry and west to south side of Page Mill Road

Conservation rules and tips 

Water supplier:California Water Service Company
(650) 917-0152
Source of water72% SCVWD 28% well water
TreatmentChloramineChlorinated
Area served Remainder of the city
Conservation rules and tips

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Los Gatos 

Water supplier:San Jose Water Company
(408) 279-7900
Source of waterBlend of: 80% surface water from Los Gatos Creek watershed20% SCVWD
TreatmentChlorinated Chloramine
Area served Entire city
Conservation rules and tips

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Milpitas 

Water supplier:City of Milpitas Community Services
(408) 586-2600
Source of waterHetch HetchySCVWD
TreatmentChloramineChloramine
Area served Residential customers living east of I-680 and east of I-880; north of Calaveras and Pinewood housing tracts (Pinewood, Granada, Monte Vista)Remaining industrial tracts
Conservation rules and tips 

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Monte Sereno 

Water supplier:San Jose Water Company
(408) 279-7900
Source of waterBlend of: 80% surface water from Los Gatos Creek watershed20% SCVWD
TreatmentChlorinated Chloramine
Area served Entire city
Conservation rules and tips

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Morgan Hill 

Water supplier:City of Morgan Hill
(408) 776-7333
Source of waterWell water
TreatmentChlorinated
Area served Entire city
Water conservation restrictions

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Mountain View

Water supplier:City of Mountain View Public Works
(650) 903-6329
Source of waterHetch HetchySCVWDWell water
TreatmentChloramineChloramineUntreated
Area served North of U.S. 101 south to Cuesta Dr., east from Sunnyvale and west to Palo Alto/Los Altos border
South of Cuesta Dr. to Mountain View, west to Los Altos border(West; Well 19) Evelyn to Castro and south along Highway 85 to El Camino Real
(East; Well 20) Moorpark south and southwest to El Camino Real
(North; Wells 21 and 10) Rengstorff west to Mayfield. Gladys west to Farley
click here
Conservation rules and tips

Water supplier:California Water Service Company
(650) 917-0152
Source of water72% SCVWD 28% well water
TreatmentChloramineChlorinated
Area served From Grant Road east in small areas to Highway 85
Conservation rules and tips

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Palo Alto 

Water supplier:City of Palo Alto Utilities Department
(650) 329-2161
Source of waterHetch Hetchy
TreatmentChloramine
Area served Entire city
Conservation rules and tips

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San Jose 

Water supplier:San Jose Water Company
(408) 279-7900
Source of waterWell water
Surface water from Los Gatos Creek watershedSCVWD
TreatmentChlorinated
ChlorinatedChloramine
Area served North of Curtner Ave; west of U.S. 101All areas not served by Great Oaks Water Co. or San Jose Muni.
South of Curtner Ave; east of U.S. 101
Conservation rules and tips

Water supplier:Great Oaks Water Company
(408) 227-9540
Source of waterWell water
TreatmentUntreated
Area served East of Snell Road, north of southern city limits, west of Coyote Creek, south of Riverview Drive and Monterey Rd.
Conservation rules and tips

Water supplier:San Jose Municipal Water System
(408) 277-4218
Source of water
Hetch Hetchy
SCVWDWell waterWell water
TreatmentChloramineChloramineUntreatedUntreated
Area served Alviso, San Jose, north of Trimble RoadEvergreen Edenvale Coyote Valley
 Conservation rules and tips

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Santa Clara

Water supplier:City of Santa Clara Water Department
(408) 615-2000

Source of water

Occasionally well water is mixed with water from other sources.
Well water Hetch Hetchy SCVWD
TreatmentUntreated ChloramineChloramine
Area served Entire city, primarily South of U.S. 101North of U.S. 101Southwest portion of the city
Conservation rules and tips

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Saratoga 

Water supplier:San Jose Water Company
(408) 279-7900
Source of waterSurface water from Saratoga Creek SCVWD
TreatmentChlorinated Chloramine
Area served Village and downtown hills area Hwy 85 flat area
Conservation rules and tips

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Stanford

Water supplier:Stanford University, Utilities Division
(650) 725-8030
Source of waterSan Francisco Public Utilities Commission
TreatmentChloraminated
Area served Stanford University
Conservation rules and tips

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Sunnyvale 

Water supplier:City of Sunnyvale Public Works Department
(408) 730-7510
Source of waterHetch HetchySCVWDWell waterNon-potable recycled water
TreatmentChloramineChloramineUntreated 
Area served North of El Camino Real Southern part of city Southern part of city
Non-potable recycled water for irrigation purposes
Conservation rules and tips

Water supplier:California Water Service Company
(650) 917-0152
Source of water72% SCVWD 28% well water
TreatmentChloramineChlorinated
Area served From Grant Road east in small areas to Highway 85
Conservation rules and tips