Montana
Water Quality Report
84 Good
Average Score
84/100
Water Systems
125
Population
767,978
Violations
154 12 unresolved
Score Distribution
24 A
10 B
0 C
0 D
0 F
Top Contaminant Violations
| Contaminant | Violations |
|---|---|
| Copper (90th percentile) | 1 |
Lowest Scoring Water Systems
75
Town Pump Bonner 1 B
MT0002466 Butte, MT 2,460 served
78
Lehrkinds Big Spring Water B
MT0001229 Bozeman, MT 2,575 served
78
Helena Water System B
MT0000241 Helena, MT 32,091 served
78
Wheat Montana At Muralts Travel Plaza B
MT0000847 Missoula, MT 1,225 served
82
Grace Bible Church B
MT0004484 Bozeman, MT 1,350 served
Counties in Montana
Cities in Montana
View all 83 cities →Popular City Comparisons in Montana
Quickly compare major cities in Montana by water quality score and grade.
Frequently Asked Questions
Is tap water in Montana safe to drink?
Montana has an average WaterQ score of 84/100 across 125 public water systems. Safety can vary by city and system, so check your local report for recent violations and contaminants.
How many water systems are in Montana?
WaterQ currently tracks 125 public water systems in Montana.
Where can I compare cities in Montana?
Use the city list below to open detailed reports, or visit the compare tool to benchmark two cities side-by-side on score, grade, and system coverage.