Water Hardness in South Dakota Well Water

In South Dakota, water hardness levels average 185.6 mg/L CaCO3, with a maximum recorded level of 317.5 mg/L CaCO3. The EPA limit is 180 mg/L CaCO3. Currently 11.7% of tested wells exceed this limit, affecting approximately 8,775 wells.

Testing for water hardness in South Dakota typically costs around $139. If treatment is needed, water treatment systems for water hardness cost approximately $4,483.

The risk level for water hardness in South Dakota is rated as moderate. The state average of 185.6 mg/L CaCO3 is 34.3% above the national average of 138.229 mg/L CaCO3.