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Water system · PWSID WI6270294

MERRILLAN WATERWORKS

MERRILLAN, WI · ~531 people served

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

PWSID

WI6270294

State

Wisconsin

City

MERRILLAN

Population served

531

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

53

Violations on record

1

Unaddressed

1

Health-based

21

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 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 · Lead & Copper Rule began Jun 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Apr 2017 Resolved
Monitoring & reporting · Total coliform began Jan 2012 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2012 Resolved
Other · EPA contaminant 7000 began Jul 2004 Resolved
Other · EPA contaminant 7000 began Jul 2003 Resolved
Monitoring & reporting · Total coliform began Dec 1994 Resolved
Monitoring & reporting · EPA contaminant 2380 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2380 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2378 began Jan 1993 Resolved

Recent enforcement actions

  • State action · SOX Jun 2025
  • State action · SOX Aug 2024
  • State action · SIF May 2024
  • State action · SIE Nov 2023
  • State action · SIA Nov 2023
  • State action · SOX Apr 2017
  • State action · SIA Apr 2017
  • State action · SIF Feb 2012

This profile is built from EPA public records for system WI6270294 — 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.