Water Hardness in New Hampshire Well Water

In New Hampshire, water hardness levels average 198.1 mg/L CaCO3, with a maximum recorded level of 480.4 mg/L CaCO3. The EPA limit is 180 mg/L CaCO3. Currently 10.2% of tested wells exceed this limit, affecting approximately 34,680 wells.

Testing for water hardness in New Hampshire typically costs around $131. If treatment is needed, water treatment systems for water hardness cost approximately $3,114.

The risk level for water hardness in New Hampshire is rated as moderate. The state average of 198.1 mg/L CaCO3 is 43.3% above the national average of 138.229 mg/L CaCO3.