Nitrate in Wisconsin Well Water

In Wisconsin, nitrate levels average 7.733 mg/L, with a maximum recorded level of 30.717 mg/L. The EPA limit is 10 mg/L. Currently 4.3% of tested wells exceed this limit, affecting approximately 33,540 wells.

Testing for nitrate in Wisconsin typically costs around $31. If treatment is needed, water treatment systems for nitrate cost approximately $1,157.

The risk level for nitrate in Wisconsin is rated as low. The state average of 7.733 mg/L is 78.5% above the national average of 4.332 mg/L.