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An MPCA investigation found violations related to construction of a home on Schwappauff Lake, near the town of Greenfield in Hennepin County.
PolyMet Mining plans to develop a mine and processing plant to extract copper, nickel, and precious metals.
Solid waste facilities may close or terminate their permit depending on the solid waste activities occurring at the site.
The MPCA has withdrawn proposed rules relating to waste treated seeds.
The MPCA fined Heron Lake BioEnergy $18,174 for failing to properly maintain safety controls and inspect storage tanks on its property.
MPCA investigation found that Heron Lake BioEnergy LLC exceeded its permitted limits of particulate matter (PM) and hazardous air pollutants (HAPs) at its plant in Jackson County.
Project began construction in October 2022 without a stormwater permit or a stormwater pollution prevention plan, and failed to install erosion and sediment controls at a pond and wetland improvement site near Finlayson, Minn.
Township and private party fined $47,555 for failing to obtain a construction stormwater permit for road improvements.
SkyWater Technology violated federal laws and Minnesota rules, operating a semiconductor plant without an appropriate air permit in Bloomington, Minnesota.
Permits help the MPCA protect the environment.
The Meadows Mobile Home Park discharged untreated sewage to the ground in two separate violations in 2025.
The MPCA fined West Fraser Forest Products $24,750 for exceeding the total amount of hazardous air pollutants (HAPs) allowed by the air permit for the company’s Solway facility from January 2024 to January 2025.
Groundwater and drinking water in the east Twin Cities metro area is contaminated with PFAS due to 3M's disposal practices at four sites in the area.
In 2023, Minnesota saw more air quality alerts covering more days than ever before. Smoke from Canadian wildfires throughout the summer caused many of the alerts, though climate change is playing a growing role in Minnesota's air quality.
An MPCA investigation determined that General Mills violated state rule at its oat processing facility in Fridley on several occasions from 2019 through 2023.
The MPCA fined Regions Hospital $100,000 for improperly disposing of infectious waste in its mixed municipal solid waste in 2024.
Inadequate stormwater protections at a Saint Paul project have netted fines for the Minnesota Department of Transportation (MnDOT) and Bituminous Roadways.
Failed emissions performance stack tests on two boilers in the fall of 2023 at its sugar beet processing facility in Moorhead, Minnesota.
MPCA investigation found that Rainy Lake Oil failed to repair a pipe that was leaking diesel fuel underground for more than four months in 2024.
Carver County and Valley Paving Inc. failed to properly install and maintain erosion and sediment controls during a highway safety improvement project in the fall 2022 and spring 2023 near Watertown, Minn. This caused significant erosion and sediment to impact several area surface waters.