Water Hardness in Arizona Well Water

In Arizona, water hardness levels average 173.32 mg/L CaCO3, with a maximum recorded level of 424.82 mg/L CaCO3. The EPA limit is 180 mg/L CaCO3. Currently 19.4% of tested wells exceed this limit, affecting approximately 54,320 wells.

Testing for water hardness in Arizona typically costs around $29. If treatment is needed, water treatment systems for water hardness cost approximately $3,593.

The risk level for water hardness in Arizona is rated as high. The state average of 173.32 mg/L CaCO3 is 25.4% above the national average of 138.229 mg/L CaCO3.