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Water system · PWSID WI4700265

COLOMA WATERWORKS

COLOMA, WI · ~454 people served

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

PWSID

WI4700265

State

Wisconsin

City

COLOMA

Population served

454

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

12

Violations on record

0

Unaddressed

2

Health-based

31

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2021. Official EPA record →

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2020 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2020 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2016 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2016 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2012 Resolved
Other · EPA contaminant 7000 began Jul 2011 Resolved
Other · EPA contaminant 7000 began Jul 2005 Resolved
Monitoring & reporting · Total coliform began Oct 1997 Resolved
Monitoring & reporting · Total coliform began Oct 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1993 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1992 Resolved

Recent enforcement actions

  • State action · SOX Aug 2021
  • State action · SIF May 2021
  • State action · SIA Jan 2021
  • State action · SIE Jan 2021
  • State action · SOX Aug 2017
  • State action · SIF Apr 2017
  • State action · SIE Nov 2016
  • State action · SIA Nov 2016

This profile is built from EPA public records for system WI4700265 — 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.