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Water system · PWSID MT0000291

MILES CITY CITY OF

MILES CITY, MT · ~9,565 people served

Check your exact address → MILES CITY overview
100
Excellent
PurityRadar safety score

PWSID

MT0000291

State

Montana

City

MILES CITY

Population served

9,565

Primary source

Surface water

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 Oct 2025). Levels in parts per trillion (ppt).

Lithium

34,000 ppt

limit —

No federal limit

Violations & enforcement

37

Violations on record

0

Unaddressed

7

Health-based

21

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2023. Official EPA record →

Monitoring & reporting · EPA contaminant 0200 began Dec 2022 Resolved
Treatment technique · EPA contaminant 0200 health-based began Sep 2022 Resolved
Treatment technique · EPA contaminant 0200 health-based began Aug 2022 Resolved
Other · EPA contaminant 7000 began Jul 2018 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2005 Resolved
Monitoring & reporting · Total coliform began Jun 1998 Resolved
Monitoring & reporting · Total coliform began Jan 1998 Resolved
Monitoring & reporting · EPA contaminant 2981 began Jan 1997 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jan 1997 Resolved
Monitoring & reporting · EPA contaminant 2987 began Jan 1997 Resolved
Monitoring & reporting · EPA contaminant 2991 began Jan 1997 Resolved
Monitoring & reporting · EPA contaminant 2378 began Jan 1997 Resolved

Recent enforcement actions

  • State action · SOX Feb 2023
  • State action · SIE Feb 2023
  • State action · SIA Feb 2023
  • State action · SIF Feb 2023
  • State action · SIA Sep 2022
  • State action · SIE Sep 2022
  • State action · SIF Sep 2022
  • State action · SOX Sep 2022

This profile is built from EPA public records for system MT0000291 — 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.