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Water system · PWSID CA5400744

EAST THREE RIVERS MUTUAL WATER CORP

THREE RIVERS, CA · ~40 people served

Check your exact address → THREE RIVERS overview
85
Excellent
PurityRadar safety score

PWSID

CA5400744

State

California

City

THREE RIVERS

Population served

40

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

9

Violations on record

2

Unaddressed

2

Health-based

10

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Other · EPA contaminant 7000 began Jul 2025 Addressed
Monitoring · Lead & Copper Rule began Dec 2024 Resolved
Monitoring · Lead & Copper Rule began Nov 2024 Resolved
Monitoring · Lead & Copper Rule began Oct 2024 Resolved
Monitoring & reporting · Nitrate began Jan 2018 Resolved
Other · EPA contaminant 7000 began Jul 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2015 Resolved

Recent enforcement actions

  • State action · SFL Nov 2025
  • State action · SOX Jan 2025
  • State action · SFL Jan 2025
  • State action · SFL Nov 2024
  • State action · SOX Jan 2020
  • State action · SFL Mar 2019
  • State action · SOX Mar 2017
  • State action · SFL Feb 2017

This profile is built from EPA public records for system CA5400744 — 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.