City guides

California city tap water quality

City pages are SEO shortcuts into ZIP search — not citywide water scores. Every report still matches a public water system.

Honest framing: We do not invent contaminant numbers on city pages. Open a ZIP report for curated detections from public CA data. Educational only — not medical advice, not affiliated with EWG.

Los Angeles metro

Los Angeles

94 ZIPs in index · tap water by ZIP

Long Beach

27 ZIPs in index · tap water by ZIP

Pasadena

25 ZIPs in index · tap water by ZIP

Glendale

14 ZIPs in index · tap water by ZIP

Santa Monica

11 ZIPs in index · tap water by ZIP

Torrance

10 ZIPs in index · tap water by ZIP

Burbank

13 ZIPs in index · tap water by ZIP

Anaheim

17 ZIPs in index · tap water by ZIP

Irvine

13 ZIPs in index · tap water by ZIP

Santa Ana

11 ZIPs in index · tap water by ZIP

Huntington Beach

6 ZIPs in index · tap water by ZIP

Fullerton

8 ZIPs in index · tap water by ZIP

Beverly Hills

5 ZIPs in index · tap water by ZIP

Pomona

4 ZIPs in index · tap water by ZIP

Inland Empire

Riverside

17 ZIPs in index · tap water by ZIP

San Bernardino

15 ZIPs in index · tap water by ZIP

Ontario

4 ZIPs in index · tap water by ZIP

Fontana

5 ZIPs in index · tap water by ZIP

Corona

7 ZIPs in index · tap water by ZIP

Rancho Cucamonga

5 ZIPs in index · tap water by ZIP

Moreno Valley

7 ZIPs in index · tap water by ZIP

Temecula

5 ZIPs in index · tap water by ZIP

Murrieta

3 ZIPs in index · tap water by ZIP

San Diego County

San Diego

76 ZIPs in index · tap water by ZIP

Chula Vista

8 ZIPs in index · tap water by ZIP

Oceanside

7 ZIPs in index · tap water by ZIP

Escondido

7 ZIPs in index · tap water by ZIP

Carlsbad

6 ZIPs in index · tap water by ZIP

Bay Area

San Francisco

50 ZIPs in index · tap water by ZIP

Oakland

26 ZIPs in index · tap water by ZIP

San Jose

58 ZIPs in index · tap water by ZIP

Berkeley

11 ZIPs in index · tap water by ZIP

Fremont

5 ZIPs in index · tap water by ZIP

Sunnyvale

5 ZIPs in index · tap water by ZIP

Concord

8 ZIPs in index · tap water by ZIP

Hayward

7 ZIPs in index · tap water by ZIP

Sacramento area

Sacramento

100 ZIPs in index · tap water by ZIP

Elk Grove

4 ZIPs in index · tap water by ZIP

Roseville

3 ZIPs in index · tap water by ZIP

Central Valley

Fresno

58 ZIPs in index · tap water by ZIP

Bakersfield

22 ZIPs in index · tap water by ZIP

Stockton

20 ZIPs in index · tap water by ZIP

Modesto

10 ZIPs in index · tap water by ZIP

Central Coast

Oxnard

7 ZIPs in index · tap water by ZIP

Santa Barbara

17 ZIPs in index · tap water by ZIP

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