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Underground storage tank (UST) facilities must designate owners, operators, or employees as Class A, Class B, and Class C operators.
The St. Louis River Mercury TMDL will determine mercury reductions needed for lakes and rivers in the St. Louis River watershed.
The MPCA closed 118 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2023.
Wastewater treatment and disposal are important for protecting and preserving Minnesota's water resources. MPCA regulates wastewater treatment activities in Minnesota.
Coal tar-based sealants can no longer be sold or applied legally in Minnesota as of 2014.
Requirements for discharges from a project site and/or management control site(s).
From January through March 2025, MPCA air monitoring data showed elevated lead levels that exceeded national ambient air quality standards near the facility. An MPCA inspection of Gopher Resource in spring 2025 confirmed that the source of the elevated lead levels was addressed.
Superfund requires specific investigation and cleanup processes, designates parties that are legally responsible for the cleanup, and provides funds for certain types of cleanups under Minnesota’s Environmental Response and Liability Act (MERLA).
Minnesota industrial stormwater permittees in certain industries to monitor for PFAS in their stormwater runoff or snow.
Minnesota water infrastructure projects in St. Cloud and Pipestone garner EPA’s top awards for innovation, excellence in protecting environment, health.
Central Bi-Products emitted higher levels of hydrogen sulfide than is allowed, causing odor complaints in the community of Long Prairie and resulting in a $3 million fine. Central Bi-Products has agreed to spend a minimum of $4.4 million on a supplemental environmental project that will improve its wastewater treatment.
Nitrogen management plans help operators of wastewater treatment facilities understand the inputs of nitrogen to their facilities and evaluate options that can reduce the amount of nitrogen discharged.
Launched in 2022, the PFAS monitoring plan lays out a path for PFAS monitoring at solid waste, wastewater, and stormwater facilities; hazardous waste landfills; facilities with air emissions; and…
A watershed is the area of land where all of the water that drains off of it goes into the same place — a river, stream or lake.
Product stewardship encourages manufacturers, retailers, and consumers to treat products as resources rather than waste, changing how they think about the products they make, buy, and use.
Nitrogen, like phosphorus, is a nutrient that pollutes in state waters, and its concentration in many rivers has been increasing from historic natural levels over time due to human influences.…
MPCA’s community air monitoring pilot grant program will provide $4.85 million to build more networks of community air sensors in the Twin Cities metro area.
Chemicals in the air toxics emission inventory.
Minnesota law requires that people notify the MPCA (through the Minnesota Duty Officer) immediately when more than five gallons of petroleum or any amount of any substance under their control is released into the environment that could cause pollution of waters of the state.
The MPCA uses the Environmental Quality Information System (EQuIS) to store water quality data from more than 17,000 Minnesota sampling locations.