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Water system · PWSID WI1220107

LANCASTER WATERWORKS

LANCASTER, WI · ~3,907 people served

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

PWSID

WI1220107

State

Wisconsin

City

LANCASTER

Population served

3,907

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

11

Violations on record

0

Unaddressed

3

Health-based

39

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2022. Official EPA record →

Monitoring · Lead & Copper Rule began Mar 2022 Resolved
Monitoring & reporting · Lead & Copper Rule began Jun 2017 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2015 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2013 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Max contaminant level (MCL) · Uranium health-based began Jul 2012 Resolved
Other · EPA contaminant 7500 began May 2012 Resolved
Max contaminant level (MCL) · Uranium health-based began Apr 2012 Resolved
Monitoring & reporting · Total coliform began May 1997 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 1993 Resolved

Recent enforcement actions

  • State action · SOX Apr 2022
  • State action · SIA Apr 2022
  • State action · SIF Apr 2022
  • State action · SIE Apr 2022
  • State action · SOX Sep 2018
  • State action · SIF Jul 2018
  • State action · SIA Mar 2018
  • State action · SIE Mar 2018

This profile is built from EPA public records for system WI1220107 — 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.