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Water system · PWSID CA1510021

WASCO, CITY OF

WASCO, CA · ~22,757 people served

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

PWSID

CA1510021

State

California

City

WASCO

Population served

22,757

Primary source

Groundwater

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

15

Violations on record

0

Unaddressed

9

Health-based

19

Enforcement actions

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

Max contaminant level (MCL) · Total coliform health-based began Jul 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2011 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2008 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2008 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2007 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2007 Resolved
Monitoring & reporting · Total coliform began Dec 2000 Resolved
Monitoring & reporting · Nitrate began Jan 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 1995 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 1994 Resolved

Recent enforcement actions

  • State action · SOX Mar 2018
  • State action · SFL Sep 2014
  • State action · SFL Sep 2011
  • State action · SFL Feb 2011
  • State action · SIA May 2009
  • State action · SIA Dec 2001
  • State action · SIA Feb 2001
  • State action · SOX Feb 1995

This profile is built from EPA public records for system CA1510021 — 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.