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Water system · PWSID CA2210001

MARIPOSA PUBLIC UTILITY DIST

MARIPOSA, CA · ~2,000 people served

Check your exact address → MARIPOSA overview
100
Excellent
PurityRadar safety score

PWSID

CA2210001

State

California

City

MARIPOSA

Population served

2,000

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

50

Violations on record

0

Unaddressed

47

Health-based

30

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2018. Official EPA record →

Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2013 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2013 Resolved
Treatment technique · Bromate health-based began Jan 2013 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2012 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Oct 2012 Resolved
Treatment technique · Bromate health-based began Oct 2012 Resolved
Treatment technique · Bromate health-based began Jul 2012 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2012 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Jul 2012 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2012 Resolved
Max contaminant level (MCL) · Haloacetic acids (HAA5) health-based began Apr 2012 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2012 Resolved

Recent enforcement actions

  • State action · SOX Mar 2018
  • State action · SOX Mar 2018
  • State action · SIA Feb 2018
  • EPA/federal action · EOX May 2016
  • EPA/federal action · EOX May 2016
  • State action · SOX May 2014
  • State action · SOX May 2014
  • State action · SOX Nov 2012

This profile is built from EPA public records for system CA2210001 — 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.