City guide · ZIP / utility based
Oceanside tap water quality
Oceanside North County ZIPs typically map to the city utility. Reports use public CA drinking-water data.
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 7 ZIP codes in our index are labeled Oceanside (San Diego County). Pick an example below or enter your own ZIP.
Example ZIPs in Oceanside
92049 Oceanside
92051 Oceanside
92052 Oceanside
92054 Oceanside
92056 Oceanside
92057 Oceanside
92058 Oceanside
Utilities often matched near Oceanside
Names come from public CA water-system records for ZIPs labeled Oceanside. Your block may differ — always open the ZIP report.
- Oceanside, City of
Want the full drinking water report?
Open a ZIP report for curated detections vs EPA limits and CA health guidelines. Open report for 92049 →
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