NORTH FOND DU LAC WATERWORKS

NORTH FOND DU LAC, WI · ~5,414 people served

Check your exact address → NORTH FOND DU LAC overview

100

Excellent

PurityRadar safety score

PWSID

WI4200405

State

Wisconsin

City

NORTH FOND DU LAC

Population served

5,414

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

Latest detections from EPA’s UCMR5 monitoring (through Nov 2023). Levels in parts per trillion (ppt).

Lithium

9,700 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Other · EPA contaminant 7500 began Oct 2024 Resolved

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved

Monitoring & reporting · Lead & Copper Rule began Feb 2021 Resolved

Other · EPA contaminant 7000 began Jul 2020 Resolved

Max contaminant level (MCL) · Uranium health-based began Oct 2019 Resolved

Monitoring & reporting · EPA contaminant 4030 began Jan 2019 Resolved

Monitoring & reporting · EPA contaminant 4020 began Jan 2019 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2015 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved

Monitoring & reporting · Total coliform began Mar 2014 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2014 Resolved

Recent enforcement actions

State action · SOX Jun 2025
State action · SIF May 2025
State action · SOX May 2025
State action · SIF May 2023
State action · SOX May 2022
State action · SOX Feb 2021
State action · SIA Feb 2021
State action · SOX Dec 2020

This profile is built from EPA public records for system WI4200405 — 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.