COLONIAL PARK

HEALDSBURG, CA · ~342 people served

Check your exact address → HEALDSBURG overview

100

Excellent

PurityRadar safety score

PWSID

CA4900721

State

California

City

HEALDSBURG

Population served

342

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

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Monitoring & reporting · Total coliform began Oct 2011 Resolved

Monitoring & reporting · Nitrate began Jan 2007 Resolved

Monitoring & reporting · Nitrate began Jan 2006 Resolved

Monitoring & reporting · Lead & Copper Rule began Mar 2001 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1993 Resolved

Recent enforcement actions

State action · SOX Mar 2018
State action · SFL Dec 2011
State action · SOX Nov 2011
State action · SOX Aug 2008
State action · SFO Jul 2008
State action · SFL Jun 2007
EPA/federal action · EOX Sep 2005
State action · SFJ Aug 2003

This profile is built from EPA public records for system CA4900721 — 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.