PROGRESSIVE FLAT WATER ASSN

Tonasket, WA · ~335 people served

Check your exact address → Tonasket overview

100

Excellent

PurityRadar safety score

PWSID

WA5369650

State

Washington

City

Tonasket

Population served

335

Primary source

GWP

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 Jul 2021. Official EPA record →

Max contaminant level (MCL) · Lead & Copper Rule health-based began Jun 2021 Resolved

Other · EPA contaminant 7000 began Jul 2010 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2969 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2976 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2977 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2980 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2979 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2982 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2983 began Jan 2005 Resolved

Monitoring & reporting · EPA contaminant 2968 began Jan 2005 Resolved

Recent enforcement actions

State action · SOX Jul 2021
State action · SOX Oct 2010
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 Jan 2000

This profile is built from EPA public records for system WA5369650 — 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.