CAPE SAN JUAN WATER DISTRICT

Friday Harbor, WA · ~164 people served

Check your exact address → Friday Harbor overview

100

Excellent

PurityRadar safety score

PWSID

WA5311065

State

Washington

City

Friday Harbor

Population served

164

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 Feb 2025. Official EPA record →

Other · EPA contaminant 7000 began Jul 2024 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2022 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2022 Resolved

Other · EPA contaminant 7000 began Jul 2017 Resolved

Other · EPA contaminant 7000 began Jul 2016 Resolved

Other · EPA contaminant 7000 began Oct 1999 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1997 Resolved

Recent enforcement actions

State action · SOX Feb 2025
State action · SOX Mar 2023
State action · SOX Mar 2023
State action · SOX Sep 2017
State action · SOX Oct 2016
EPA/federal action · EOX Dec 1999
State action · SOX Jan 1998
State action · SO6 Sep 1985

This profile is built from EPA public records for system WA5311065 — 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.