BIGFORK COUNTY WATER AND SEWER

BIGFORK, MT · ~6,100 people served

Check your exact address → BIGFORK overview

100

Excellent

PurityRadar safety score

PWSID

MT0000262

State

Montana

City

BIGFORK

Population served

6,100

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

Latest detections from EPA’s UCMR5 monitoring (through May 2025). Levels in parts per trillion (ppt).

Lithium

12,100 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2015. Official EPA record →

Monitoring & reporting · EPA contaminant 3014 began May 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Mar 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jan 2015 Resolved

Max contaminant level (MCL) · Gross alpha health-based began Jul 2009 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 2001 Resolved

Monitoring & reporting · Total coliform began Aug 1997 Resolved

Monitoring & reporting · Total coliform began Jul 1997 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1997 Resolved

Monitoring & reporting · Total coliform began Dec 1996 Resolved

Monitoring & reporting · Arsenic began Jan 1996 Resolved

Recent enforcement actions

State action · SIF Jul 2015
State action · SOX Jun 2015
State action · SIE Jun 2015
State action · SIA Jun 2015
State action · SOX Apr 2015
State action · SOX Apr 2015
State action · SOX Apr 2015
State action · SIF Mar 2015

This profile is built from EPA public records for system MT0000262 — 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.