EAU CLAIRE WATERWORKS

EAU CLAIRE, WI · ~70,587 people served

Check your exact address → EAU CLAIRE overview

Excellent

PurityRadar safety score

PWSID

WI6180230

State

Wisconsin

City

EAU CLAIRE

Population served

70,587

Primary source

Groundwater

Score history

▼ 7 points — the score moved from 100 to 93 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 93

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 Jul 2023). Levels in parts per trillion (ppt).

PFHxS

Perfluorohexanesulfonic acid

9.1 ppt

limit 10 ppt

Near EPA limit

PFBS

3 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 1999. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jun 1999 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1992 Resolved

Monitoring & reporting · Lead & Copper Rule began Jun 1992 Resolved

Recent enforcement actions

State action · SIF Sep 1999
State action · SIA Sep 1999
State action · SIF Jul 1999
State action · SOX Jul 1999
State action · SIA Jun 1999
State action · SIE Jun 1999
State action · SOX Jan 1998
State action · SOX Jan 1993

This profile is built from EPA public records for system WI6180230 — 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.