Water Hardness Colorado
Here are the water hardness values for the cities in Colorado.
| City | AVG Hardness PPM / mg/L | AVG Hardness Grains per Gallon |
|---|---|---|
| Aurora | 132 | 7.8 |
| Arvada | 158 | 9 |
| Boulder | 40.5 | 2.4 |
| Broomfield | 83 | 4.9 |
| Castle Rock | 152 | 8.9 |
| Centennial | 205 | 12 |
| Colorado Springs | 112.5 | 6.6 |
| Commerce City | 276 | 16.2 |
| Denver | 97.5 | 5.8 |
| Durango | 89 | 5 |
| Fort Collins | 111 | 6 |
| Longmont | 20 | 1.2 |
| Loveland | 22 | 1.3 |
| Pueblo | 117 | 6.9 |
| Thornton | 196 | 11.5 |
| Westminster | 117.5 | 6.9 |