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Water system · PWSID CA3301676

THOMAS MOUNTAIN WATER COMPANY

MOUNTAIN CENTER, CA · ~157 people served

Check your exact address → MOUNTAIN CENTER overview
85
Excellent
PurityRadar safety score

PWSID

CA3301676

State

California

City

MOUNTAIN CENTER

Population served

157

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

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

11

Violations on record

1

Unaddressed

1

Health-based

23

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2023. Official EPA record →

Treatment technique · Lead & Copper Rule health-based began Oct 2022 Unaddressed
Monitoring & reporting · Nitrate began Jul 2017 Resolved
Other · EPA contaminant 7000 began Jul 2007 Resolved
Other · EPA contaminant 7000 began Jul 2006 Resolved
Other · EPA contaminant 7000 began Jul 2005 Resolved
Other · EPA contaminant 7000 began Jul 2004 Resolved
Monitoring & reporting · Total coliform began Oct 2003 Resolved
Monitoring & reporting · Total coliform began Aug 2003 Resolved
Monitoring & reporting · Total coliform began Jun 2003 Resolved
Monitoring & reporting · Total coliform began Jul 2002 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

  • State action · SIA Oct 2023
  • State action · SFJ Oct 2017
  • State action · SOX Oct 2017
  • State action · SOX Oct 2017
  • State action · SOX Jul 2008
  • State action · SIA Aug 2007
  • State action · SFL Oct 2006
  • State action · SOX Oct 2006

This profile is built from EPA public records for system CA3301676 — 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.