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Water system · PWSID MN1740008

Thompson Oaks

Ellendale, MN · ~51 people served

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

PWSID

MN1740008

State

Minnesota

City

Ellendale

Population served

51

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

11

Violations on record

0

Unaddressed

5

Health-based

42

Enforcement actions

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

Other · EPA contaminant 7500 began Apr 2025 Resolved
Monitoring & reporting · Uranium began Apr 2023 Resolved
Monitoring & reporting · Gross alpha began Apr 2023 Resolved
Max contaminant level (MCL) · Gross alpha health-based began Jul 2020 Resolved
Max contaminant level (MCL) · Gross alpha health-based began Apr 2020 Resolved
Max contaminant level (MCL) · Gross alpha health-based began Jan 2020 Resolved
Max contaminant level (MCL) · Gross alpha health-based began Jul 2019 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 2019 Resolved
Monitoring · Lead & Copper Rule began Jul 2017 Resolved
Monitoring · Lead & Copper Rule began Jan 2017 Resolved
Max contaminant level (MCL) · Gross alpha health-based began Jan 2016 Resolved

Recent enforcement actions

  • State action · SFJ May 2025
  • State action · SOX May 2025
  • State action · SOX Jan 2024
  • State action · SOX Jan 2024
  • State action · SOX Jan 2024
  • State action · SOX Jan 2024
  • State action · SOX Jan 2024
  • State action · SOX Aug 2023

This profile is built from EPA public records for system MN1740008 — 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.