Sulfate in Illinois Well Water

In Illinois, sulfate levels average 189.444 mg/L, with a maximum recorded level of 547.464 mg/L. The EPA limit is 250 mg/L. Currently 12.1% of tested wells exceed this limit, affecting approximately 54,450 wells.

Testing for sulfate in Illinois typically costs around $82. If treatment is needed, water treatment systems for sulfate cost approximately $3,089.

The risk level for sulfate in Illinois is rated as moderate. The state average of 189.444 mg/L is 69.9% above the national average of 111.500 mg/L.