Water Hardness Iowa
Here are the water hardness values for the cities in Iowa.
| City | AVG Hardness PPM / mg/L | AVG Hardness Grains per Gallon |
|---|---|---|
| Ames | 164 | 9.6 |
| Cedar Rapids | 120 | 7.1 |
| Davenport | 235 | 13.8 |
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| City | AVG Hardness PPM / mg/L | AVG Hardness Grains per Gallon |
|---|---|---|
| Ames | 164 | 9.6 |
| Cedar Rapids | 120 | 7.1 |
| Davenport | 235 | 13.8 |