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Public Water System
CAL AMERICAN WC - LAS POSAS ESTATES
PWSID CA5610081 · California · 2,039 people served
A
ExcellentCAL AMERICAN WC - LAS POSAS ESTATES is an EPA-regulated public water system in California (PWSID CA5610081). It serves an estimated 2,039 residents — a small town of customers — across 1 community across 1 ZIP code.
CAL AMERICAN WC - LAS POSAS ESTATES 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
2,039
Cities
1
ZIPs
1
Violations
0
EPA Health-Based Violations
Health-based Maximum Contaminant Level (MCL) violations on file for CAL AMERICAN WC - LAS POSAS ESTATES over the past five years of EPA SDWIS reporting.
✅
No health-based violations in the last 5 years.
CAL AMERICAN WC - LAS POSAS ESTATES'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 CAL AMERICAN WC - LAS POSAS ESTATES
ZIP Codes Served
About this system
EPA records this system as PWSID CA5610081. 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 CAL AMERICAN WC - LAS POSAS ESTATES directly or review their annual Consumer Confidence Report (CCR).
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