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Water system · PWSID CA2701570

LOS CARNEROS MWA

100
Excellent
PurityRadar safety score

PWSID

CA2701570

State

California

City

AROMAS

Population served

70

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

7

Violations on record

0

Unaddressed

4

Health-based

17

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2019. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jul 2013 Resolved
Monitoring & reporting · Total coliform began Apr 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2005 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 2005 Resolved
Monitoring & reporting · Total coliform began Jun 2003 Resolved
Monitoring & reporting · Total coliform began May 1998 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 1997 Resolved

Recent enforcement actions

  • State action · SOX Jan 2019
  • State action · SIA Feb 2015
  • State action · SIA Dec 2013
  • State action · SIE Dec 2013
  • State action · SOX Aug 2013
  • State action · SOX May 2010
  • State action · SIA May 2010
  • State action · SIE May 2010

This profile is built from EPA public records for system CA2701570 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.