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Public Water System
SAN ANTONIO WATER COMPANY
PWSID CA3610085 · California · 3,441 people served
A
ExcellentSAN ANTONIO WATER COMPANY is an EPA-regulated public water system in California (PWSID CA3610085). It serves an estimated 3,441 residents — a small town of customers — across 1 community across 1 ZIP code.
SAN ANTONIO WATER COMPANY has maintained full EPA Safe Drinking Water Act compliance over the most recent five-year reporting window. No health-based Maximum Contaminant Level (MCL) exceedances are on record. The grade of A reflects this clean compliance history.
Service Area
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Centered on the averaged ZIP-code centroid of 1 ZIP served.
Population
3,441
Cities
1
ZIPs
1
Violations
0
EPA Health-Based Violations
Health-based Maximum Contaminant Level (MCL) violations on file for SAN ANTONIO WATER COMPANY over the past five years of EPA SDWIS reporting.
✅
No health-based violations in the last 5 years.
SAN ANTONIO WATER COMPANY's water systems have met EPA health-based Maximum Contaminant Level (MCL) requirements throughout the EPA reporting window. This does not mean zero detection of regulated contaminants — it means all measured concentrations remained below their federal action levels.
Cities Served by SAN ANTONIO WATER COMPANY
ZIP Codes Served
About this system
EPA records this system as PWSID CA3610085. Data reflects the most recent EPA SDWIS publication as of 2026-05-18. Public Water System Identifiers (PWSIDs) are assigned by the EPA's Safe Drinking Water Act program to track every regulated water utility in the United States. The first two letters typically indicate the state primacy agency. For real-time water quality information, contact SAN ANTONIO WATER COMPANY directly or review their annual Consumer Confidence Report (CCR).
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