Water Quality in Montana
Water hardness and contaminant data for 5 cities across Montana. Find your city below to see a detailed water quality profile.
5
Cities
78
Avg Hardness (PPM)
160
Hardest City (PPM)
Montana Cities by Water Hardness
| City | Hardness (PPM) | Level | PFAS (ppt) | Source |
|---|---|---|---|---|
| Helena | 160 | Hard | 2 | Missouri River + Ten Mile Creek |
| Bozeman | 79 | Moderately Hard | 2 | Hyalite Reservoir, groundwater |
| Great Falls | 71 | Moderately Hard | 2 | Missouri River |
| Billings | 65 | Moderately Hard | 2 | Yellowstone River |
| Missoula | 16 | Soft | 2 | Rattlesnake Creek, groundwater |