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Water system · PWSID WI2410100

MILWAUKEE WATERWORKS

MILWAUKEE, WI · ~626,000 people served

Check your exact address → MILWAUKEE overview
100
Excellent
PurityRadar safety score

PWSID

WI2410100

State

Wisconsin

City

MILWAUKEE

Population served

626,000

Primary source

Surface water

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

10

Violations on record

0

Unaddressed

1

Health-based

22

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2016. Official EPA record →

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved
Monitoring & reporting · Total coliform began Sep 2007 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2007 Resolved
Monitoring & reporting · EPA contaminant 1006 began Jul 2007 Resolved
Monitoring & reporting · EPA contaminant 1011 began Jul 2005 Resolved
Other · EPA contaminant 7000 began Oct 2002 Resolved
Other · EPA contaminant 7000 began Jul 2002 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1999 Resolved
Monitoring & reporting · Lead & Copper Rule began Jun 1992 Resolved

Recent enforcement actions

  • State action · SOX Mar 2016
  • State action · SO8 Nov 2015
  • State action · SIF Sep 2015
  • State action · SFG Sep 2015
  • State action · SO8 Sep 2015
  • State action · SO8 Jul 2015
  • State action · SIE Apr 2015
  • State action · SIA Apr 2015

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

15 stations · latest Dec 2025

0.715 · max 4.1 mg/L · 2,200

Copper

11 stations · latest May 2025

0.0105 · max 0.03 mg/L · 71

Lead

11 stations · latest May 2025

0.0285 · max 1.7 mg/L · 70

Arsenic

7 stations · latest Aug 2023

0.45 · max 2.9 ug/l · 32

Manganese

2 stations · latest Aug 2023

9.38 · max 90.9 ug/l · 30

Atrazine

1 station · latest Jul 2024

0.12 · max 1.43 ug/L · 5

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 WI2410100 — 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.