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Water system · PWSID MT0003932

HIDDEN LAKE COLONY

100
Excellent
PurityRadar safety score

PWSID

MT0003932

State

Montana

City

CUT BANK

Population served

80

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

67

Violations on record

1

Unaddressed

11

Health-based

144

Enforcement actions

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

Other · EPA contaminant 7000 began Oct 2025 Unaddressed
Other · EPA contaminant 7000 began Oct 2024 Resolved
Monitoring · Lead & Copper Rule began Jul 2024 Resolved
Monitoring · Lead & Copper Rule began Apr 2024 Resolved
Monitoring · Lead & Copper Rule began Jun 2023 Resolved
Monitoring & reporting · Beryllium began Apr 2023 Resolved
Monitoring & reporting · Arsenic began Apr 2023 Resolved
Monitoring · Lead & Copper Rule began Mar 2023 Resolved
Monitoring & reporting · Beryllium began Oct 2022 Resolved
Monitoring & reporting · EPA contaminant 3014 began Sep 2022 Resolved
Monitoring · Lead & Copper Rule began Jul 2022 Resolved
Monitoring · Lead & Copper Rule began Dec 2021 Resolved

Recent enforcement actions

  • State action · SIA Oct 2025
  • State action · SOX Oct 2024
  • State action · SIA Oct 2024
  • State action · SOX Aug 2024
  • State action · SIE Aug 2024
  • State action · SIA Aug 2024
  • State action · SOX May 2024
  • State action · SIA May 2024

This profile is built from EPA public records for system MT0003932 — 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.