💧 ZIP Water Report

Tap water in Great Falls, MT — ZIP 59401

1 public water system serving about 60,000 people.

A
Excellent

Water systems serving 59401

Great Falls City Of
PWSID MT0000525 · serves 60,000 · surface water
0 health-based / 0 total violations (5 yrs)
A

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