Soft or Hard Water
Calculate water hardness based on dissolved minerals. Water hardness is a function of the amount of dissolved calcium, magnesium, iron, aluminum, and manganese salts.
Water Hardness Calculator
Hard water contains dissolved minerals, primarily calcium and magnesium salts, iron and aluminum. Total hardness can be calculated based on the concentrations of these minerals.
Classification
| Classification | mg/L (ppm) | gpg |
|---|---|---|
| Soft | 0 - 60 | 0 - 3.5 |
| Moderate | 61 - 120 | 3.5 - 7 |
| Hard | 121 - 180 | 7 - 10.5 |
| Very Hard | > 180 | > 10.5 |
1 ppm = 0.058 grains/US gallon