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Water system · PWSID CA1010004

COALINGA-CITY

COALINGA, CA · ~17,277 people served

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

PWSID

CA1010004

State

California

City

COALINGA

Population served

17,277

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

14

Health-based

18

Enforcement actions

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

Other began Oct 2016 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2015 Resolved
Treatment technique · EPA contaminant 0200 health-based began Sep 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2015 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2014 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2014 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2004 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2004 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2004 Resolved

Recent enforcement actions

  • State action · SOX Mar 2018
  • State action · SOX Mar 2018
  • State action · SO6 May 2017
  • State action · SFL Apr 2017
  • State action · SFL Feb 2017
  • State action · SOX Jun 2016
  • State action · SFL Feb 2016
  • State action · SFL Nov 2015

This profile is built from EPA public records for system CA1010004 — 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.