Arsenic in Wisconsin Well Water

In Wisconsin, arsenic levels average 6.929 ppb, with a maximum recorded level of 33.377 ppb. The EPA limit is 10 ppb. Currently 7.7% of tested wells exceed this limit, affecting approximately 60,060 wells.

Testing for arsenic in Wisconsin typically costs around $133. If treatment is needed, water treatment systems for arsenic cost approximately $961.

The risk level for arsenic in Wisconsin is rated as low. The state average of 6.929 ppb is 63.3% above the national average of 4.243 ppb.