BURTON WATER COOPERATIVE

Vashon, WA · ~964 people served

Check your exact address → Vashon overview

100

Excellent

PurityRadar safety score

PWSID

WA5309800

State

Washington

City

Vashon

Population served

964

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 Apr 2019. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jan 2000 Unaddressed

Monitoring · Lead & Copper Rule began Mar 2019 Resolved

Other · EPA contaminant 7000 began Jul 2010 Resolved

Monitoring & reporting · Nitrate began Jan 2007 Resolved

Monitoring & reporting · EPA contaminant 2032 began Jan 2005 Resolved

Recent enforcement actions

State action · SOX Apr 2019
State action · SOX Oct 2010
State action · SOX Feb 2008
State action · SOX Feb 2008
State action · SOX Feb 2008
State action · SOX Feb 2008
State action · SOX Feb 2008
State action · SOX Feb 2008

This profile is built from EPA public records for system WA5309800 — 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.