PWSID
WA5303523
State
Washington
City
Tonasket
Population served
7
Primary source
Groundwater
Score history
No change since tracking began Jun 18, 2026.
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
2
Violations on record
0
Unaddressed
0
Health-based
4
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Dec 1999. Official EPA record →
Recent enforcement actions
- EPA/federal action · EOX Dec 1999
- State action · SOX Jul 1999
- State action · SID Aug 1991
- State action · SID Jul 1991
This profile is built from EPA public records for system WA5303523 — 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.