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Water system · PWSID WI7370151

MARATHON CITY WATERWORKS

MARATHON CITY, WI · ~1,695 people served

Check your exact address → MARATHON CITY overview
100
Excellent
PurityRadar safety score

PWSID

WI7370151

State

Wisconsin

City

MARATHON CITY

Population served

1,695

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

10

Violations on record

1

Unaddressed

2

Health-based

19

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 Feb 2021 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2020 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2020 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2019 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2019 Resolved
Other · EPA contaminant 7000 began Jul 2018 Resolved
Other · EPA contaminant 7000 began Jul 2004 Resolved
Treatment technique · Lead & Copper Rule health-based began Jan 1994 Resolved

Recent enforcement actions

  • EPA/federal action · EIA Jun 2025
  • State action · SOX May 2025
  • State action · SOX Feb 2021
  • State action · SIA Feb 2021
  • State action · SIF May 2020
  • State action · SIF May 2020
  • State action · SOX Apr 2020
  • State action · SOX Apr 2020

This profile is built from EPA public records for system WI7370151 — 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.