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Water system · PWSID MN1020005

GreyStone MHP

Watertown, MN · ~500 people served

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

PWSID

MN1020005

State

Minnesota

City

Watertown

Population served

500

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

14

Violations on record

0

Unaddressed

1

Health-based

44

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2017. Official EPA record →

Monitoring & reporting · EPA contaminant 0999 began Jul 2017 Resolved
Monitoring · Lead & Copper Rule began Jul 2017 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2014 Resolved
Monitoring & reporting · Total coliform began Jul 2014 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2012 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2012 Resolved
Monitoring & reporting · Total coliform began Jul 2012 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2012 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2010 Resolved
Monitoring & reporting · Total coliform began Jul 2010 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2009 Resolved
Monitoring & reporting · Total coliform began Oct 2009 Resolved

Recent enforcement actions

  • State action · SOX Nov 2017
  • State action · SFJ Oct 2017
  • State action · SIE Oct 2017
  • State action · SIA Sep 2017
  • State action · SIE Oct 2014
  • State action · SFJ Oct 2014
  • State action · SOX Oct 2014
  • State action · SIF Mar 2013

This profile is built from EPA public records for system MN1020005 — 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.