The South Dakota Water Resources Institute (SD WRI) no longer provides interpretation of water analysis and recommendations for the suitability of water.
The South Dakota Department of Environment and Natural Resources (DENR) certifies laboratories for the analysis of drinking water in the state of South Dakota. A list of currently certified laboratories are maintained by the DENR at certified labs. In addition, South Dakota Agricultural Laboratories, 605-692-7325, offers a variety of analysis options and analysis packages which include analysis for the most commonly occurring water quality issues.
General guidelines for sampling water for testing at a lab
Water Quality Interpretation Tool