💧 ZIP Water Report

Tap water in Libby, MT — ZIP 59923

1 public water system serving about 4,892 people.

F
Failing

Water systems serving 59923

Libby City Of
PWSID MT0000274 · serves 4,892 · surface water
3 health-based / 3 total violations (5 yrs)
F

Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology