The Water Map

South Dakota

South Dakota drinking water quality

Every public water system in South Dakota we've verified. Each report covers one calendar year and shows the utility's own measured contaminant levels against federal limits.

Want the national picture? See where South Dakota lands in our ranking of the states with the most open health-based water violations, pulled from the EPA's own records for every U.S. public water system.

474 water systems mapped in South Dakota

Browse all 474 systems A–Z:12