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Water system · PWSID CA5410034

DEL ORO CALIFORNIA PINES DISTRICT

CHICO, CA · ~944 people served

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

PWSID

CA5410034

State

California

City

CHICO

Population served

944

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

26

Violations on record

0

Unaddressed

7

Health-based

33

Enforcement actions

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

Max contaminant level (MCL) · Combined radium-226/228 health-based began Oct 2011 Resolved
Max contaminant level (MCL) · Combined radium-226/228 health-based began Jan 2011 Resolved
Max contaminant level (MCL) · Combined radium-226/228 health-based began Jan 2009 Resolved
Max contaminant level (MCL) · Combined radium-226/228 health-based began Apr 2008 Resolved
Monitoring & reporting · Nitrate began Jan 2006 Resolved
Monitoring & reporting · Total coliform began Aug 2004 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2004 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2004 Resolved
Monitoring & reporting · Total coliform began Aug 2003 Resolved
Monitoring & reporting · Nitrate began Jan 2003 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2003 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2002 Resolved

Recent enforcement actions

  • State action · SOX Mar 2018
  • State action · SOX Mar 2016
  • State action · SFL Sep 2009
  • State action · SIA Apr 2007
  • State action · SOX Mar 2007
  • State action · SIA Nov 2004
  • State action · SOX Sep 2004
  • State action · SFL Sep 2004

This profile is built from EPA public records for system CA5410034 — 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.