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Water system · PWSID CA4100512

LOMA MAR MUTUAL

LOMA MAR, CA · ~65 people served

Check your exact address → LOMA MAR overview
100
Excellent
PurityRadar safety score

PWSID

CA4100512

State

California

City

LOMA MAR

Population served

65

Primary source

Surface water

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

16

Violations on record

0

Unaddressed

11

Health-based

38

Enforcement actions

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

Treatment technique · EPA contaminant 0200 health-based began Aug 2016 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2016 Resolved
Treatment technique · EPA contaminant 0200 health-based began Sep 2014 Resolved
Treatment technique · EPA contaminant 0200 health-based began Mar 2013 Resolved
Monitoring & reporting · Total coliform began Jul 2006 Resolved
Treatment technique · EPA contaminant 0200 health-based began Dec 2005 Resolved
Monitoring & reporting · Total coliform began Jan 2005 Resolved
Treatment technique · EPA contaminant 0300 health-based began Jan 2005 Resolved
Treatment technique · EPA contaminant 0200 health-based began Apr 2004 Resolved
Other · EPA contaminant 7000 began Jul 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2003 Resolved
Monitoring & reporting · Total coliform began Apr 2003 Resolved

Recent enforcement actions

  • State action · SOX Jan 2019
  • State action · SOX Jan 2019
  • State action · SOX Feb 2018
  • State action · SOX Feb 2018
  • State action · SOX Feb 2018
  • State action · SOX Feb 2018
  • State action · SOX Feb 2018
  • State action · SFL Feb 2018

This profile is built from EPA public records for system CA4100512 — 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.