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Water system · PWSID MT0000445

MARTINSDALE COLONY

MARTINSDALE, MT · ~150 people served

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

PWSID

MT0000445

State

Montana

City

MARTINSDALE

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

10

Violations on record

1

Unaddressed

3

Health-based

23

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2020 Resolved
Monitoring & reporting · Uranium began Jan 2011 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2004 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2004 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2004 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1999 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 1993 Resolved
Monitoring & reporting · Total coliform began Sep 1993 Resolved

Recent enforcement actions

  • State action · SIE Oct 2025
  • State action · SIA Oct 2025
  • State action · SOX Mar 2022
  • State action · SOX Jul 2020
  • State action · SIA Jul 2020
  • State action · SIA Jan 2020
  • State action · SIE Jan 2020
  • State action · SOX Jan 2009

This profile is built from EPA public records for system MT0000445 — 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.