JOHNSON CREEK WATER USERS ASSN

Tonasket, WA · ~48 people served

Check your exact address → Tonasket overview

100

Excellent

PurityRadar safety score

PWSID

WA5339411

State

Washington

City

Tonasket

Population served

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 Jan 2008. Official EPA record →

Monitoring & reporting · EPA contaminant 2032 began Jan 2005 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1999 Resolved

Recent enforcement actions

State action · SOX Jan 2008
State action · SOX Jan 2008
State action · SOX Jan 2008
State action · SOX Jan 2008
State action · SOX Jan 2008
State action · SOX Jul 1999
State action · SIA Jul 1995
State action · SID Jul 1991

This profile is built from EPA public records for system WA5339411 — 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.