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    Banner showing a reservoir at sunset with the headline “Protect Our Reservoirs.” It warns that golden mussels threaten local recreation and urges boaters and anglers to “Clean. Drain. Dry.” Icons show prohibited wet live bait (fish, crayfish, mussels) and steps to stop the spread: remove plants, drain water, and wipe down equipment. Footer includes ValleyWater.org/GoldenMussels and logos for Santa Clara County Parks and Valley Water.
    April 3, 2026
    Golden mussels in California: What Santa Clara County needs to know

    California’s water infrastructure is facing a new threat—one that’s tiny, invasive, and alarmingly fast-spreading. Golden mussels, native to Asia, were first detected in the Delta in 2024 and have spread to several California waterbodies hydrologically connected to the Sacramento-San Joaquin Delta, including San Luis Reservoir. These invaders pose a serious risk to water delivery systems across the state, including those serving Santa Clara County.

    Why golden mussels are a threat

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    March 27, 2026
    Calling young creators: Inspire water conservation in our Every Drop Counts video contest

    By the Valley Water Youth Commission 

    How would you inspire your community to save water in just 60 seconds? That’s the challenge for middle and high school students in our Every Drop Counts Video Contest. 

    We are hosting our first-ever video contest for middle and high school students, and the theme is water conservation. Students are invited to grab the mic, show off their creativity, and inspire their community to protect one of our most important resources, water! 

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    March 25, 2026
    Statement From Valley Water Board Chair Tony Estremera regarding César Chávez Day

    The annual César Chávez Day has long represented more than the life of one person. It is a moment to recognize the broader fight for dignity, fair treatment, and the rights of farmworkers and working people whose labor sustains our communities.

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Find My Water Retailer

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Valley Water, 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 and bill their customers directly.  

To confirm who your water retailer is:

  • Click on the city you live in listed below, or
  • Enter your address into this lookup tool

Below you will find helpful links containing information about the following (organized by city or town):

  • Water use rules and tips
  • Where to report water waste
  • Rebates and programs
  • How to read your water meter
  • How to find your water account information and read your water bill

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

San Jose Water Company

(408) 279-7900

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter

Find Your Account No./Read Your Bill

Entire City

Blend, primarily:

SCVWD

Chloramine

Remainder:

Well water

Chlorinated
Water SuppliersWater ConservationArea ServedWater SourceTreatment

San Jose Water Company

(408) 279-7900

 

Rules and Tips 

Report Water Waste

Rebates and Programs

Reading Your Meter

Find Your Account No./Read Your Bill

South of Hwy 280

SCVWD

(2 wells for backup)

Chloramine

California Water Service Company

(650) 917-0152

Rules and Tips

Report Water Waste

Rebates and Programs

Reading your Meter (video)

Find Your Account No./Read Your Bill

From Homestead to Stevens Creek areaSCVWDChloramine

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

Gilroy Community Services Department

(408) 846-0400

Rules and Tips

Report Water Waste

Rebates and Programs

Track and Monitor Your Water Use

Entire cityWell waterChlorinated

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

California Water Service Company

(650) 917-0152

Rules and Tips 

Report Water Waste

Rebates and Programs 

Reading Your Meter (video)

Find Your Account No./Read Your Bill

Entire city72% SCVWDChloramine
28% Well waterChlorinated

Water Suppliers

Water Conservation

Area Served

Water Source

Treatment

Purissima Hills Water District  

(650) 948-1217

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter

North to Stanford, east to Los Altos/Palo Alto boundary, south to Neary Quarry and west to south side of Page Mill RoadHetch Hetchy  Chloramine

California Water Service Company

(650) 917-0152

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter (video)

Find Your Account No./Read Your Bill

Remainder of the town72% SCVWDChloramine
28% Well waterChlorinated

Water Supplier

Water Conservation

Area served

Water source

Treatment

San Jose Water Company 

(408) 279-7900

Rules and Tips

Report Water Waste

Rebates and Programs 

Reading Your Meter

Find Your Account No./Read Your Bill

Entire townBlend of: 80% surface from Los Gatos Creek watershedChlorinated
20% SCVWDChloramine

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

City of Milpitas Community Services

(408) 586-2600

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Water Meter [PDF]

City and remaining industrial tractsHetch HetchyChloramine
SCVWD Chloramine

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

San Jose Water Company

(408) 279-7900

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter

Find Your Account No./Read Your Bill

Entire city

Blend of: 80% surface water from Los Gatos Creek watershed

Chlorinated

 

20% SCVWD

Chloramine

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

City of Morgan Hill

(408) 776-7333

Water Waste Rules

Report Water Waste

Rebates and Programs

Track and Monitor Your Water Use

Entire cityWell waterChlorinated

Water Suppliers

Water

Conservation

Area Served

Water Source

Treatment

City of Mountain View Public Works

(650) 903-6329

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter [PDF]

Find Your Account No./Read Your Bill

 

North of U.S. 101 south to Cuesta Dr., east from Sunnyvale and west to Palo Alto/Los Altos borderHetch Hetchy

Chloramine

 

South of Cuesta Dr. to Mountain View, west to Los Altos borderSCVWDChloramine

(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

Well waterUntreated

California Water Service Company

(650) 917-0152

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter (video)

Find Your Account No./Read Your Bill

From Grant Road east in small areas around Highway 8572% SCVWDChloramine
28% well waterChlorinated

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

City of Palo Alto Utilities Department

(650) 329-2161

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter

Entire cityHetch Hetchy  Chloramine

Water Suppliers

Water Conservation

Area Served

Water Source

Treatment

San Jose Water Company  

(408) 279-7900

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter

Find Your Account No./Read Your Bill

 

North of Curtner Ave; west of U.S. 101Well waterChlorinated
All areas not served by Great Oaks Water Co. or San José Municipal Water (San José Muni).Surface water from Los Gatos Creek watershedChlorinated
South of Curtner Ave; east of U.S. 101SCVWDChloramine

San José Municipal Water System

(408) 535-3500

Water Waste Rules

Report Water Waste

Water Saving Tips

Rebates and Programs

Reading Your Meter

Alviso, San José, north of Trimble RoadHetch HetchyChloramine
EvergreenSCVWDChloramine
EdenvaleWell waterUntreated
Coyote ValleyWell waterUntreated

Great Oaks Water Company

(408) 227-9540

Report Water Waste

Rebates and Programs

Reading Your Meter

East of Snell Road, north of southern city limits, west of Coyote Creek, south of Riverview Drive and Monterey Rd.Well waterUntreated

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

City of Santa Clara Water Department

(408) 615-2000

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter

Find Your Account No./Read Your Bill

 

Entire city, primarily South of U.S 101Well waterUntreated
North of U.S. 101Hetch HetchyChloramine
Southwest portion of the citySCVWDChloramine

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

San Jose Water Company

(408) 279-7900

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter

Find Your Account No./Read Your Bill

Village and downtown hills areaSurface water from Saratoga CreekChlorinated
Hwy 85 flat areaSCVWDChloramine

Water Supplier

Water Conservation

Area Served

Water Source

Treatment

Stanford University, Utilities Division

(650) 725-8030

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter [PDF]

Stanford UniversitySan Francisco Public Utilities Commission Chloraminated

Water Suppliers

Water Conservation

Area Served

Water Source

Treatment

City of Sunnyvale Public Works Department

 (408) 730-7900

Conservation Programs, Water Usage, and Reporting

Report Water Waste

Rebates and Programs

Reading Your Meter [PDF]

North of El CaminoHetch HetchyChloramine
Southern part of citySCVWDChloramine
Southern part of cityWell waterUntreated
Irrigation purposesNon-potable recycled water 

California Water Service Company  

(650) 917-0152

Rules and Tips

Report Water Waste

Rebates and Programs

Reading Your Meter (video)

Find Your Account No./Read Your Bill

 

From Grant Road east in small areas to Highway 8572% SCVWDChloramine
28% Well waterChlorinated

Water Suppliers

Water Conservation

Rules

Report Water Waste

Enter Your Address to Determine Your Water Retailer

Rebates and Programs

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Santa Clara Valley Water District 2026
Pollution Hotline 888-510-5151
Phone: 408-265-2600