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Water system · PWSID WI1530061

LONE ROCK WATERWORKS

LONE ROCK, WI · ~895 people served

Check your exact address → LONE ROCK overview
100
Excellent
PurityRadar safety score

PWSID

WI1530061

State

Wisconsin

City

LONE ROCK

Population served

895

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

18

Violations on record

0

Unaddressed

3

Health-based

46

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2024. Official EPA record →

Monitoring & reporting · Nitrate began Oct 2023 Resolved
Monitoring & reporting · Lead & Copper Rule began Feb 2021 Resolved
Treatment technique · Lead & Copper Rule health-based began Nov 2020 Resolved
Max contaminant level (MCL) · Total coliform health-based began Feb 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2015 Resolved
Other · EPA contaminant 7000 began Jul 2012 Resolved
Monitoring & reporting · Total coliform began May 2012 Resolved
Monitoring & reporting · Total coliform began Apr 2012 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2012 Resolved
Monitoring & reporting · EPA contaminant 4030 began Jan 2009 Resolved
Monitoring & reporting · Total coliform began Jul 2001 Resolved
Monitoring & reporting · Gross alpha began Jan 1995 Resolved

Recent enforcement actions

  • State action · SIF Jun 2024
  • State action · SOX Nov 2023
  • State action · SIA Nov 2023
  • State action · SIE Nov 2023
  • State action · SIF Mar 2021
  • State action · SOX Mar 2021
  • State action · SOX Mar 2021
  • State action · SIA Feb 2021

This profile is built from EPA public records for system WI1530061 — 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.