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Water system · PWSID WI7350123

MERRILL WATERWORKS

MERRILL, WI · ~9,661 people served

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

PWSID

WI7350123

State

Wisconsin

City

MERRILL

Population served

9,661

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

142

Violations on record

0

Unaddressed

3

Health-based

35

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2025. Official EPA record →

Reporting · Lead & Copper Rule began Oct 2025 Resolved
Treatment technique · Lead & Copper Rule health-based began Oct 2025 Resolved
Monitoring & reporting · Total coliform began Jun 2006 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Apr 2004 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Apr 2004 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 1994 Resolved
Monitoring & reporting · EPA contaminant 2033 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2010 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2032 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2031 began Jan 1993 Resolved
Monitoring & reporting · EPA contaminant 2020 began Jan 1993 Resolved

Recent enforcement actions

  • State action · SIF Nov 2025
  • State action · SIF Nov 2025
  • State action · SIA Nov 2025
  • State action · SIA Nov 2025
  • State action · SIE Nov 2025
  • State action · SIE Nov 2025
  • State action · SOX Oct 2025
  • State action · SOX Oct 2025

This profile is built from EPA public records for system WI7350123 — 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.