City guide · ZIP / utility based

Chula Vista tap water quality

Chula Vista South Bay ZIPs map to city or regional San Diego County systems. Open a ZIP for the full report.

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 8 ZIP codes in our index are labeled Chula Vista (San Diego County). Pick an example below or enter your own ZIP.

Example ZIPs in Chula Vista

91913 Chula Vista 91909 Chula Vista 91914 Chula Vista 91915 Chula Vista 91910 Chula Vista 91911 Chula Vista 91912 Chula Vista 91921 Chula Vista

Utilities often matched near Chula Vista

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

  • Sweetwater Authority
  • Otay Water District

Want the full drinking water report?

Open a ZIP report for curated detections vs EPA limits and CA health guidelines. Open report for 91913 →

All cities · San Diego County · All regions · Contaminant glossary · Methodology