San Jose
Yes. Tap water in San Jose is low risk across 30 water systems. Meets federal drinking water standards.
30 official water systems are listed for this town. Each keeps its own rating.
Is it safe?
Cal-water Service Co.-chico
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 110,473 people.
Source water: groundwater.
Is it safe?
Cal-water Service Co.-marysville
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 12,888 people.
Source water: groundwater.
Is it safe?
Cal-water Service Co.-oroville
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 11,047 people.
Source water: surface water.
Is it safe?
Cal-water Service Co.-willows
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,107 people.
Source water: groundwater.
Is it safe?
California Water Service - Bear Gulch
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 60,382 people.
Source water: surface water.
Is it safe?
California Water Service - Livermore
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 60,414 people.
Source water: surface water.
Is it safe?
California Water Service - San Carlos
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 34,801 people.
Source water: surface water.
Is it safe?
California Water Service - San Mateo
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 103,536 people.
Source water: surface water.
Is it safe?
California Water Service - Stockton
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 182,775 people.
Source water: surface water.
Is it safe?
California Water Service Co - Westlake
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 19,544 people.
Source water: surface water.
Is it safe?
California Water Service Co. - Dixon
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 10,623 people.
Source water: groundwater.
Is it safe?
California Water Service Co. - Dominguez
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 149,490 people.
Source water: surface water.
Is it safe?
California Water Service Co. - Ela
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 142,140 people.
Source water: surface water.
Is it safe?
California Water Service Co. - Herm/redo
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 100,072 people.
Source water: surface water.
Is it safe?
California Water Service Co. - Palos Ver
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 70,830 people.
Source water: surface water.
Is it safe?
California Water Service Co.-travis Afb
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 18,111 people.
Source water: surface water.
Is it safe?
California Water Service-s San Francisco
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 62,609 people.
Source water: surface water.
Is it safe?
City of San Jose - Evg/edv/coy
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 99,783 people.
Source water: surface water.
Is it safe?
City of San Jose - Nsj/alviso
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 48,082 people.
Source water: surface water.
Is it safe?
Cws - Bakersfield
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 268,129 people.
Source water: surface water.
Is it safe?
Cws - North Garden
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 27,634 people.
Source water: surface water.
Is it safe?
Cws - Selma
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 25,651 people.
Source water: groundwater.
Is it safe?
Cws - Visalia
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 153,522 people.
Source water: groundwater.
Is it safe?
Cwsc King City
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 14,046 people.
Source water: groundwater.
Is it safe?
Cwsc Los Altos Suburban
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 63,559 people.
Source water: surface water.
Is it safe?
Cwsc Salinas
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 114,286 people.
Source water: groundwater.
Is it safe?
Cwsc Salinas Hills
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 7,733 people.
Source water: groundwater.
Is it safe?
Great Oaks Wc Inc
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 112,582 people.
Source water: groundwater.
Is it safe?
San Jose Water
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 1,039,920 people.
Source water: surface water.
Last health violation began 2023-06-01.
Is it safe?
Tesoro Viejo Master Mwc, Inc.
Low risk
Meets federal drinking water standards
No health-based violations began in the last 3 years, and none are unresolved.
Serves about 4,660 people.
Source water: surface water.
Source
US EPA Safe Drinking Water Information System.
Period covered: October 2023 to September 2026.
Covers community water systems serving 3,300 people or more. The rating uses health-based violations of federal drinking-water standards in the last three years, and whether those violations have been fixed. Each system is placed at a town it serves, so positions are approximate.
Common questions
Can I drink the tap water in San Jose, California?
Yes. Tap water in San Jose is low risk across 30 water systems. Meets federal drinking water standards.
Where do these ratings come from?
US EPA Safe Drinking Water Information System. Period covered: October 2023 to September 2026.