Mercury in South Dakota Well Water

In South Dakota, mercury levels average 1.501 ppb, with a maximum recorded level of 6.128 ppb. The EPA limit is 2 ppb. Currently 3.5% of tested wells exceed this limit, affecting approximately 2,625 wells.

Testing for mercury in South Dakota typically costs around $84. If treatment is needed, water treatment systems for mercury cost approximately $2,869.

The risk level for mercury in South Dakota is rated as low. The state average of 1.501 ppb is 62.6% above the national average of 0.923 ppb.