Copper in Illinois Well Water

In Illinois, copper levels average 0.716 mg/L, with a maximum recorded level of 3.204 mg/L. The EPA limit is 1.3 mg/L. Currently 4.2% of tested wells exceed this limit, affecting approximately 18,900 wells.

Testing for copper in Illinois typically costs around $108. If treatment is needed, water treatment systems for copper cost approximately $1,220.

The risk level for copper in Illinois is rated as low. The state average of 0.716 mg/L is 23.2% above the national average of 0.581 mg/L.