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All facilities with air permits must submit an annual emissions inventory report to the MPCA that tracks actual emissions of major pollutants at that facility.
Northshore Mining Company has applied for updated wastewater and air quality permits for its Silver Bay taconite processing plant and Mile Post 7 tailings basin.
The MPCA proposes adding 46 new impaired bodies of water and removing 45 impairments from bodies of water from the IWL, the most removals in a two-year cycle since the state began the IWL program in 1992.
When people think of sources of air pollution, they typically think about buildings with big smokestacks like power plants and factories. Only about a quarter of the air pollution in Minnesota comes…
Environmental regulations vary by industry. To help you navigate this, we've compiled key considerations based on common industries, processes, and equipment.
The Leech Lake River Watershed consists of approximately 854,659 acres (1,335 sq. miles) in the northern part of the Upper Mississippi River Basin. The watershed includes parts of Beltrami, Cass, and Hubbard counties and the Leech Lake Reservation (Leech Lake Band of Chippewa).
The Minnesota Pollution Control Agency seeks public comment on a draft industrial wastewater permit that provides various improvements to better protect the environment and human health at Northshore Mining Co.'s taconite processing facility and tailings basin in Silver Bay, Minnesota.
Image MPCA staff provide technical assistance to businesses seeking to improve their environmental performance and prevent pollution.Small business…
MPCA seeks public comment on two draft industrial wastewater permits for U.S. Steel Corp.’s Keetac mining area and tailings basin in Keewatin, Minnesota. These permits will improve protections for wild rice waters and human health.
The MPCA is collaborating with many federal, Tribal, state, and local partners to clean up contaminated sites in the Duluth harbor and St. Louis River.
Resources for wastewater clients.
For related studies and Technical Advisory Team meeting notes, visit this document sharing site.
The Pine River Watershed is approximately 502,400 acres in size. The watershed drainage for the Pine River contains parts of Aitkin, Cass, Crow Wing and Hubbard counties. Pine River and Crosslake are the major cities in the watershed.
Kathy Wagner, recipient of the 2025 Community Conservationist Award from the Minnesota Pollution Control Agency (MPCA) and Minnesota Association of Soil and Water Conservation Districts (MASWCD), discusses her personal conservation work and local environmental advocacy.
The Kettle River Watershed covers 672,235 acres in northeast Minnesota, covering parts of Aitkin, Carlton, Kanabec, and Pine counties.
Cleveland-Cliffs owns the Minorca Mine northeast of Virginia, Minnesota. The mine’s two taconite mining pits are about one mile southeast of the plant.
The MPCA provides educational information about the status of Minnesota’s air, water, land, and climate and can point you toward beneficial actions you can take as students, teachers, and life-long learners interested in Minnesota’s sustainable future.
The Minnesota Pollution Control Agency is committed to ensuring that every Minnesotan has healthy air, sustainable lands, clean water, and a better climate.
A water quality variance is a temporary change in a state's water quality standard for a specific pollutant and its relevant criteria, allowing deviation from meeting a water quality-based effluent limit for a particular discharger.
Recyclers of CED must register with the MPCA; there is no annual fee. Recyclers must meet certain requirements in terms of regulatory compliance, necessary licensure, and insurance.