DEL ORO WATER CO.-STIRLING BLUFFS

CHICO, CA · ~521 people served

Check your exact address → CHICO overview

100

Excellent

PurityRadar safety score

PWSID

CA0410018

State

California

City

CHICO

Population served

521

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

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Treatment technique · EPA contaminant 0200 health-based began Jan 2006 Resolved

Treatment technique · EPA contaminant 0200 health-based began Oct 2005 Resolved

Treatment technique · EPA contaminant 0200 health-based began Apr 2004 Resolved

Treatment technique · EPA contaminant 0200 health-based began Jan 2004 Resolved

Treatment technique · EPA contaminant 0200 health-based began Oct 2003 Resolved

Treatment technique · EPA contaminant 0200 health-based began Jul 2003 Resolved

Recent enforcement actions

State action · SOX Feb 2018
State action · SOX Feb 2018
State action · SOX Feb 2018
State action · SOX Feb 2018
State action · SOX Feb 2018
State action · SOX Feb 2018
State action · SIE Apr 2006
State action · SIE Jan 2006

This profile is built from EPA public records for system CA0410018 — 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.