Water Hardness Montana
Here are the water hardness values for the cities in Montana.
| City | AVG Hardness PPM / mg/L | AVG Hardness Grains per Gallon |
|---|---|---|
| Billings | 123.5 | 7.3 |
| Bozeman | 57 | 3 |
| Butte | 54 | 3 |
| Cut Bank | 72 | 4 |
| Glendive | 110 | 6 |
| Great Falls | 147 | 8.6 |
| Helena | 25 | 1 |
| Kalispell | 205 | 12 |
| Missoula | 175.4 | 10.3 |