BLACKFEET DORM. WATER SYSTEM

BROWNING, MT · ~66 people served

Check your exact address → BROWNING overview

Excellent

PurityRadar safety score

PWSID

083090002

State

Montana

City

BROWNING

Population served

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2024. Official EPA record →

Treatment technique · EPA contaminant 0700 health-based began Jun 2025 Unaddressed

Monitoring & reporting · EPA contaminant 0999 began Aug 2024 Resolved

Monitoring & reporting · Thallium began Jan 2011 Resolved

Monitoring & reporting · Total coliform began Dec 2006 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2005 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2005 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2005 Resolved

Recent enforcement actions

State action · SOX Sep 2024
State action · SOX Dec 2012
State action · SOX Jun 2010
State action · SIE Feb 2007
State action · SIA Feb 2007
State action · SOX Aug 2006
State action · SIE Feb 2006
State action · SIA Feb 2006

This profile is built from EPA public records for system 083090002 — 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.