Home/ Directory/ WA/ LEWIS CO WATER DIST #2

Water system · PWSID WA5347001

LEWIS CO WATER DIST #2

Onalaska, WA · ~1,983 people served

Check your exact address → Onalaska overview
100
Excellent
PurityRadar safety score

PWSID

WA5347001

State

Washington

City

Onalaska

Population served

1,983

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

464

Violations on record

0

Unaddressed

0

Health-based

55

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2017. Official EPA record →

Monitoring · Lead & Copper Rule began Nov 2016 Resolved
Other · EPA contaminant 7000 began Jul 2016 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2016 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2016 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved
Monitoring & reporting · Nitrate began Jan 2015 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved
Other · EPA contaminant 7000 began Jul 2014 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2014 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2014 Resolved
Monitoring & reporting · Nitrate began Jan 2013 Resolved

Recent enforcement actions

  • State action · SOX Aug 2017
  • State action · SOX Aug 2017
  • State action · SOX Dec 2016
  • State action · SOX Dec 2016
  • State action · SOX Apr 2016
  • State action · SOX Sep 2015
  • State action · SOX Dec 2014
  • State action · SOX May 2014

This profile is built from EPA public records for system WA5347001 — 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.