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Water system · PWSID WI1570100

PRAIRIE DU SAC WATERWORKS

PRAIRIE DU SAC, WI · ~4,006 people served

Check your exact address → PRAIRIE DU SAC overview
100
Excellent
PurityRadar safety score

PWSID

WI1570100

State

Wisconsin

City

PRAIRIE DU SAC

Population served

4,006

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

11

Violations on record

1

Unaddressed

7

Health-based

46

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2025. Official EPA record →

Other · EPA contaminant 7500 began Oct 2024 Unaddressed
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2019 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2019 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2014 Resolved
Max contaminant level (MCL) · Nitrate health-based began Oct 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2011 Resolved
Other · EPA contaminant 7000 began Jul 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2008 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1994 Resolved

Recent enforcement actions

  • State action · SOX Jun 2025
  • State action · SOX May 2020
  • State action · SIF Jan 2020
  • State action · SIE Jan 2020
  • State action · SIA Jan 2020
  • State action · SOX Dec 2017
  • State action · SFL Mar 2015
  • State action · SIB Jan 2015

This profile is built from EPA public records for system WI1570100 — 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.