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Public Water System
MOULTON NIGUEL WATER DISTRICT
PWSID CA3010073 · California · 170,236 people served
A
ExcellentMOULTON NIGUEL WATER DISTRICT is an EPA-regulated public water system in California (PWSID CA3010073). It serves an estimated 170,236 residents — a mid-sized community of customers — across 1 community across 1 ZIP code.
MOULTON NIGUEL WATER DISTRICT 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
170,236
Cities
1
ZIPs
1
Violations
0
EPA Health-Based Violations
Health-based Maximum Contaminant Level (MCL) violations on file for MOULTON NIGUEL WATER DISTRICT over the past five years of EPA SDWIS reporting.
✅
No health-based violations in the last 5 years.
MOULTON NIGUEL WATER DISTRICT'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 MOULTON NIGUEL WATER DISTRICT
ZIP Codes Served
About this system
EPA records this system as PWSID CA3010073. 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 MOULTON NIGUEL WATER DISTRICT directly or review their annual Consumer Confidence Report (CCR).
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