PWSID
WA5363450
State
Washington
City
OLYMPIA
Population served
126,966
Primary source
Groundwater
Score history
▼ 29 points — the score moved from 100 to 71 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Apr 2024). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
5.8 ppt
limit 4 ppt
PFOA
Perfluorooctanoic acid
4.3 ppt
limit 4 ppt
PFBS
4.3 ppt
limit —
PFHxA
4 ppt
limit —
PFPeA
3.3 ppt
limit —
Violations & enforcement
4
Violations on record
0
Unaddressed
1
Health-based
13
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Aug 2025. Official EPA record →
Recent enforcement actions
- State action · SOX Aug 2025
- State action · SFL Nov 2014
- State action · SOX Nov 2014
- State action · SOX Jul 2008
- State action · SOX Jul 2008
- State action · SOX Jul 2008
- State action · SOX Jan 2008
- State action · SOX Jan 2008
This profile is built from EPA public records for system WA5363450 — 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.