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Owners/operators of construction activity must complete several steps before completing a permit application and beginning construction. These steps also help owners/operators determine their eligibility for coverage under the general permit.

Minnesota is a national leader in keeping mercury out of the environment.

The Mississippi River - Winona Watershed covers 419,200 acres in the southeast Minnesota counties of Wabasha, Winona, and Olmsted. A majority of the watershed is cropland, with forest and grassland covering large portions as well.

The MPCA completed 68 enforcement cases for water quality, air quality, hazardous waste, stormwater, and wastewater violations in the first half of 2025.

Financing for wastewater and stormwater projects is available for public entities.

Trichloroethylene and perchloroethylene have contaminated groundwater and caused vapor intrusion issues at this site.

Retail establishments can receive a 45% rebate on purchases of lead-free tackle for resale.

Healthy recycling markets divert materials from the waste stream, convert the materials into commodities, and supply them to manufacturers for the production of new products. The businesses that…

The Mississippi River - Grand Rapids Watershed covers 1,3 million acres and contains 1,908 miles of stream/rivers and 552 lakes greater than 10 acres. The watershed drainage comprises parts of the counties of Aitkin, Carlton, Cass, Itasca, and St. Louis.

Chloride is a problem for wastewater facilities and stormwater permittees.

Water scientists from the MPCA published four watershed reports in 2025, updating the data we need to keep Minnesota’s waters clean and protected.

A new $75,000 grant from the MPCA will help the U of M’s Forever Green Initiative make camelina a viable crop for sustainable aviation fuel.

BMPs required to manage the slurry to comply with Minnesota statute and agency rules to protect water quality.

The MPCA had approximately $2 million to support projects that focus on sustainable building and materials management strategies that reduce waste and increase deconstruction, salvage, and reuse.

The Upper/Lower Red Lake Watershed covers more than 1.2 million acres and is home to Upper and Lower Red Lakes, the two largest bodies of water within the state.

Complying with the MS4 general permit

Create an editable spreadsheet of details about your facility to make calculations of emissions.

Pig’s Eye Dump in Saint Paul has been slated for cleanup and restoration.

Petroleum spills from pipelines, trains, trucks, storage tanks, and other sources have damaged natural resources throughout Minnesota.

Air sensors are instruments that measure air quality conditions in near real time.