PLAINS TOWN OF

PLAINS, MT · ~1,700 people served

Check your exact address → PLAINS overview

100

Excellent

PurityRadar safety score

PWSID

MT0000305

State

Montana

City

PLAINS

Population served

1,700

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

124

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2008. Official EPA record →

Monitoring & reporting · Total coliform began Apr 2006 Resolved

Monitoring & reporting · Total coliform began Nov 2005 Resolved

Monitoring & reporting · Thallium began Jan 2001 Resolved

Monitoring & reporting · EPA contaminant 2979 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2955 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2976 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2380 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2977 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2969 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2968 began Jan 1999 Resolved

Recent enforcement actions

State action · SOX Feb 2008
State action · SOX Feb 2008
State action · SIA May 2006
State action · SIE May 2006
State action · SIE Dec 2005
State action · SIA Dec 2005
State action · SOX Dec 2003
State action · SOX Dec 2002

This profile is built from EPA public records for system MT0000305 — 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.