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Water system · PWSID MT0000274

LIBBY CITY OF

LIBBY, MT · ~4,892 people served

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

PWSID

MT0000274

State

Montana

City

LIBBY

Population served

4,892

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

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

102

Violations on record

0

Unaddressed

18

Health-based

129

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2022. Official EPA record →

Treatment technique · EPA contaminant 0800 health-based began Mar 2022 Resolved
Treatment technique · EPA contaminant 0300 health-based began Mar 2022 Resolved
Treatment technique · EPA contaminant 0300 health-based began Oct 2021 Resolved
Monitoring & reporting · EPA contaminant 2980 began Jan 2021 Resolved
Monitoring & reporting · EPA contaminant 2979 began Jan 2021 Resolved
Monitoring & reporting · EPA contaminant 2977 began Jan 2021 Resolved
Monitoring & reporting · EPA contaminant 2968 began Jan 2021 Resolved
Monitoring & reporting · EPA contaminant 2955 began Jan 2021 Resolved
Monitoring & reporting · EPA contaminant 2380 began Jan 2021 Resolved
Monitoring & reporting · EPA contaminant 2964 began Jan 2021 Resolved
Monitoring & reporting · EPA contaminant 2378 began Jan 2021 Resolved
Monitoring & reporting · EPA contaminant 2969 began Jan 2021 Resolved

Recent enforcement actions

  • State action · SOX Nov 2022
  • State action · SOX May 2022
  • State action · SIA Apr 2022
  • State action · SIE Apr 2022
  • State action · SIE Jan 2022
  • State action · SIA Jan 2022
  • State action · SOX Dec 2021
  • State action · SIE Nov 2021

This profile is built from EPA public records for system MT0000274 — 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.