In South Dakota, mains water is delivered by local public water systems, regulated by the South Dakota Dept of Agriculture and Natural Resources (DANR), Drinking Water Program under the US EPA Safe Drinking Water Act. Typical hardness: Moderately hard to very hard statewide. For a specific ZIP, see the EWG Tap Water Database.
Supplier
Local public water systems
Regulator
South Dakota Dept of Agriculture and Natural Resources (DANR), Drinking Water Program · US EPA (Safe Drinking Water Act)