ASHWAUBENON WATERWORKS

ASHWAUBENON, WI · ~17,730 people served

Check your exact address → ASHWAUBENON overview

100

Excellent

PurityRadar safety score

PWSID

WI4050456

State

Wisconsin

City

ASHWAUBENON

Population served

17,730

Primary source

SWP

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

Violations on record

Unaddressed

Health-based

116

Enforcement actions

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

Monitoring · Lead & Copper Rule began Sep 2025 Resolved

Max contaminant level (MCL) · Uranium health-based began Jan 2001 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Jan 2001 Resolved

Max contaminant level (MCL) · Uranium health-based began Jan 2000 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Jan 2000 Resolved

Max contaminant level (MCL) · Uranium health-based began Jan 1999 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Jan 1999 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Jan 1998 Resolved

Max contaminant level (MCL) · Uranium health-based began Jan 1998 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Jan 1997 Resolved

Max contaminant level (MCL) · Uranium health-based began Jan 1997 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Jan 1996 Resolved

Recent enforcement actions

State action · SIA Oct 2025
State action · SIE Oct 2025
State action · SOX Oct 2025
State action · SOX Aug 2006
State action · SOX Aug 2006
State action · SOX Aug 2006
State action · SOX Aug 2006
State action · SOX Aug 2006

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Nov 2021

0.41 · max 8.44 mg/l as N · 37

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system WI4050456 — 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.