TROY CITY OF

TROY, MT · ~2,100 people served

Check your exact address → TROY overview

100

Excellent

PurityRadar safety score

PWSID

MT0000348

State

Montana

City

TROY

Population served

2,100

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

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 May 2009. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jun 2008 Resolved

Max contaminant level (MCL) · Total coliform health-based began May 2008 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 2004 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jan 2002 Resolved

Monitoring & reporting · Nitrate began Jan 1996 Resolved

Monitoring & reporting · Nitrate began Jan 1994 Resolved

Monitoring & reporting · Total coliform began Oct 1993 Resolved

Monitoring & reporting · Total coliform began Aug 1993 Resolved

Recent enforcement actions

State action · SOX May 2009
State action · SOX Dec 2008
State action · SIF Jul 2008
State action · SIF Jun 2008
State action · SIA Jun 2008
State action · SIA Jun 2008
State action · SIE Jun 2008
State action · SIA May 2008

This profile is built from EPA public records for system MT0000348 — 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.