PRAIRIE DU CHIEN WATERWORKS

PRAIRIE DU CHIEN, WI · ~6,005 people served

Check your exact address → PRAIRIE DU CHIEN overview

Fair

PurityRadar safety score

PWSID

WI6120250

State

Wisconsin

City

PRAIRIE DU CHIEN

Population served

6,005

Primary source

Groundwater

Score history

▼ 33 points — the score moved from 100 to 67 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 67

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 Jun 2025). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

11 ppt

limit 4 ppt

Above EPA limit · 2.8×

PFHxS

Perfluorohexanesulfonic acid

4.7 ppt

limit 10 ppt

Below EPA limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2013. Official EPA record →

Treatment technique · EPA contaminant 0700 health-based began Jan 2013 Resolved

Other · EPA contaminant 7500 began Apr 2009 Resolved

Monitoring & reporting · EPA contaminant 2380 began Jan 2009 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jan 2009 Resolved

Monitoring & reporting · EPA contaminant 2968 began Jan 2009 Resolved

Monitoring & reporting · EPA contaminant 2969 began Jan 2009 Resolved

Monitoring & reporting · EPA contaminant 2977 began Jan 2009 Resolved

Monitoring & reporting · EPA contaminant 2976 began Jan 2009 Resolved

Monitoring & reporting · EPA contaminant 2979 began Jan 2009 Resolved

Monitoring & reporting · EPA contaminant 2980 began Jan 2009 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jan 2009 Resolved

Monitoring & reporting · EPA contaminant 2955 began Jan 2009 Resolved

Recent enforcement actions

State action · SIF Apr 2013
State action · SFJ Apr 2013
State action · SIE Apr 2013
State action · SOX Mar 2013
State action · SO6 Feb 2011
State action · SO8 May 2010
State action · SOX Apr 2009
State action · SIA Apr 2009

This profile is built from EPA public records for system WI6120250 — 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.