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Water system · PWSID CA5410002

DINUBA, CITY OF

DINUBA, CA · ~27,281 people served

Check your exact address → DINUBA overview
85
Excellent
PurityRadar safety score

PWSID

CA5410002

State

California

City

DINUBA

Population served

27,281

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

18

Violations on record

2

Unaddressed

15

Health-based

31

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2016. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed
Max contaminant level (MCL) · Total coliform health-based began Oct 2015 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2009 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2009 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2007 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 2005 Resolved
Max contaminant level (MCL) · Total coliform health-based began Feb 2005 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 2004 Resolved
Max contaminant level (MCL) · Total coliform health-based began Mar 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Apr 2001 Resolved

Recent enforcement actions

  • State action · SOX Mar 2016
  • State action · SFL Dec 2015
  • State action · SOX Jan 2012
  • State action · SIA Feb 2010
  • State action · SFL Jul 2007
  • State action · SOX Jun 2007
  • State action · SFL Aug 2006
  • State action · SOX Jul 2006

This profile is built from EPA public records for system CA5410002 — 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.