City guide · ZIP / utility based

San Jose tap water quality

San Jose ZIPs may map to San Jose Water, Great Oaks, or city systems. Valley overlaps can show a chooser.

Honest framing: This is not a citywide water score. We match your ZIP to a public water system using CA service-area data where available. Contaminant lists are curated detections — non-detects are omitted. Educational only — not medical advice, not a faucet lab test, and not affiliated with EWG or any utility.

About 58 ZIP codes in our index are labeled San Jose (Santa Clara County). Pick an example below or enter your own ZIP.

Example ZIPs in San Jose

95025 San Jose 95119 San Jose 95121 San Jose 95134 San Jose 95101 San Jose 95103 San Jose 95106 San Jose 95108 San Jose 95109 San Jose 95110 San Jose 95111 San Jose 95112 San Jose

Utilities often matched near San Jose

Names come from public CA water-system records for ZIPs labeled San Jose. Your block may differ — always open the ZIP report.

San Jose Water
City of San Jose - Evg/Edv/Coy
Great Oaks WC Inc
City of San Jose - Nsj/Alviso
Mt. Pleasant Water Users Association
California Water Service - San Carlos

Want the full drinking water report?

Open a ZIP report for curated detections vs EPA limits and CA health guidelines. Open report for 95025 →

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