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Water system · PWSID MT0003710

AMITY SQUARE WATER SYSTEM

MISSOULA, MT · ~50 people served

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

PWSID

MT0003710

State

Montana

City

MISSOULA

Population served

50

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

72

Violations on record

0

Unaddressed

2

Health-based

24

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Apr 2017. Official EPA record →

Monitoring & reporting · Selenium began Jan 2014 Resolved
Monitoring & reporting · EPA contaminant 1075 began Jan 2014 Resolved
Monitoring & reporting · Antimony began Jan 2014 Resolved
Monitoring & reporting · Chromium (total) began Jan 2014 Resolved
Monitoring & reporting · EPA contaminant 1036 began Jan 2014 Resolved
Monitoring & reporting · Beryllium began Jan 2014 Resolved
Monitoring & reporting · EPA contaminant 1085 began Jan 2014 Resolved
Monitoring & reporting · Fluoride began Jan 2014 Resolved
Monitoring & reporting · Barium began Jan 2014 Resolved
Monitoring & reporting · Cadmium began Jan 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 2009 Resolved
Other · EPA contaminant 7000 began Jul 2005 Resolved

Recent enforcement actions

  • State action · SOX Apr 2017
  • State action · SIE Feb 2017
  • State action · SIA Feb 2017
  • State action · SOX Dec 2009
  • State action · SIE Dec 2009
  • State action · SIA Dec 2009
  • State action · SIA Dec 2009
  • State action · SOX Aug 2009

This profile is built from EPA public records for system MT0003710 — 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.