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Water system · PWSID WI6120246

MOUNT STERLING WATERWORKS

MT STERLING, WI · ~206 people served

Check your exact address → MT STERLING overview
100
Excellent
PurityRadar safety score

PWSID

WI6120246

State

Wisconsin

City

MT STERLING

Population served

206

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

32

Violations on record

2

Unaddressed

11

Health-based

91

Enforcement actions

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

Other · EPA contaminant 7500 began Oct 2024 Unaddressed
Other · EPA contaminant 7500 began Oct 2024 Unaddressed
Monitoring · Lead & Copper Rule began Sep 2025 Resolved
Treatment technique · Lead & Copper Rule health-based began Dec 2024 Resolved
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Reporting · EPA contaminant 5200 began Oct 2024 Resolved
Monitoring · Lead & Copper Rule began Jul 2024 Resolved
Treatment technique · EPA contaminant 0400 health-based began May 2024 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2024 Resolved
Treatment technique · Lead & Copper Rule health-based began Oct 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Jun 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Jun 2023 Resolved

Recent enforcement actions

  • State action · SIF Oct 2025
  • State action · SOX Oct 2025
  • State action · SIA Oct 2025
  • State action · SIE Oct 2025
  • State action · SOX Jul 2025
  • State action · SOX Jun 2025
  • State action · SOX Jun 2025
  • EPA/federal action · EIA Jun 2025

This profile is built from EPA public records for system WI6120246 — 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.