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Water system · PWSID MT0004529

HORIZON COLONY

100
Excellent
PurityRadar safety score

PWSID

MT0004529

State

Montana

City

CUT BANK

Population served

150

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

9

Violations on record

0

Unaddressed

0

Health-based

10

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2023. Official EPA record →

Monitoring & reporting · EPA contaminant 2946 began Jan 2020 Resolved
Monitoring & reporting · EPA contaminant 2383 began Jan 2020 Resolved
Monitoring & reporting · EPA contaminant 2931 began Jan 2020 Resolved
Monitoring & reporting · Cyanide began Jan 2020 Resolved
Monitoring & reporting · EPA contaminant 2032 began Jan 2020 Resolved
Monitoring & reporting · EPA contaminant 2033 began Jan 2020 Resolved
Monitoring & reporting · EPA contaminant 2034 began Jan 2020 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Monitoring & reporting · Total coliform began Aug 2012 Resolved

Recent enforcement actions

  • State action · SOX Aug 2023
  • State action · SIA Jun 2023
  • State action · SIE Jun 2023
  • State action · SIF May 2014
  • State action · SOX Jul 2013
  • State action · SIA Jul 2013
  • State action · SIF Jun 2013
  • State action · SIA Sep 2012

This profile is built from EPA public records for system MT0004529 — 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.