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Water system · PWSID WI2670105

GERMANTOWN WATER UTILITY

GERMANTOWN, WI · ~20,027 people served

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

PWSID

WI2670105

State

Wisconsin

City

GERMANTOWN

Population served

20,027

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 Feb 2024). Levels in parts per trillion (ppt).

Lithium

30,000 ppt

limit —

No federal limit

Violations & enforcement

105

Violations on record

1

Unaddressed

3

Health-based

61

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 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 · EPA contaminant 2976 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2955 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2979 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2977 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2983 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2969 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2982 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2964 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2980 began Oct 2016 Resolved
Monitoring & reporting · EPA contaminant 2968 began Oct 2016 Resolved

Recent enforcement actions

  • State action · SOX Sep 2025
  • EPA/federal action · EIA Jun 2025
  • State action · SOX May 2017
  • State action · SIF May 2017
  • State action · SO8 Jan 2017
  • State action · SIE Jan 2017
  • State action · SIA Jan 2017
  • State action · SIF May 2016

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 Dec 2025

0.375 · max 1.4 mg/L · 82

Copper

1 station · latest Jun 2024

0.0133 · max 0.038 mg/L · 4

Arsenic

1 station · latest Dec 2024

0.0088 · max 0.0088 mg/L · 1

Lead

1 station · latest Jul 2020

0.012 · max 0.012 mg/L · 1

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 WI2670105 — 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.