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Water system · PWSID WI4200465

MARY HILL PARK SANITARY DIST

FOND DU LAC, WI · ~65 people served

Check your exact address → FOND DU LAC overview
100
Excellent
PurityRadar safety score

PWSID

WI4200465

State

Wisconsin

City

FOND DU LAC

Population served

65

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

67

Violations on record

1

Unaddressed

16

Health-based

154

Enforcement actions

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

Other · EPA contaminant 7500 began Aug 2010 Unaddressed
Reporting · EPA contaminant 5200 began Oct 2024 Resolved
Other · EPA contaminant 7000 began Oct 2012 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2012 Resolved
Other · EPA contaminant 7000 began Jul 2011 Resolved
Monitoring & reporting · Total coliform began Jul 2010 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2010 Resolved
Other · EPA contaminant 7000 began Oct 2008 Resolved
Monitoring & reporting · EPA contaminant 4020 began Oct 2007 Resolved
Monitoring & reporting · Gross alpha began Oct 2007 Resolved
Monitoring & reporting · Combined radium-226/228 began Oct 2007 Resolved

Recent enforcement actions

  • State action · SIF May 2025
  • State action · SOX Oct 2024
  • State action · SOX Jun 2013
  • State action · SOX Jun 2013
  • State action · SOX Jun 2013
  • State action · SO8 Oct 2012
  • State action · SOX Aug 2012
  • State action · SO8 Jul 2012

This profile is built from EPA public records for system WI4200465 — 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.