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Addressing excess nutrient levels in Lake Pepin based on the site-specific water quality eutrophication criteria for the lake developed by the MPCA.

In karst landscapes, the distinction between groundwater and surface water is blurry.

Minnesota rules identify 16 standing beneficial uses for which waste generators or end users can simply follow the applicable rules without contacting the MPCA.

In rules, an incorporation by reference states that the contents of another document are part of the rule, even though the text of the referenced document does not appear in the rule itself.

Distribution media include both public domain products like aggregate or drainfield rocks, and proprietary products like expanded polystyrene aggregate and chambers.

The Rapid River watershed covers 573,060 acres in northern Minnesota. Over 79% of the land in the watershed is owned or managed by state entities.

Hot mix asphalt plants in Minnesota must follow federal and state air standards.

MPCA recognized 253 municipal and industrial wastewater treatment plants for outstanding operations in 2023.

Status of total maximum daily load (TMDL) projects in Minnesota.