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The Lower Big Sioux River Watershed covers nearly 2.2 million acres, mostly located in eastern South Dakota. A small portion lies in western parts of Lincoln, Pipestone, and Rock counties in southwestern Minnesota. There are several small to medium-sized tributaries.
The 2025 MPCA annual report on Brownfields celebrated numerous major achievements cleaning up and rehabilitating polluted properties.
MPCA completed 100 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the first half of 2024
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.
Wild rice is an important part of the biological community in many Minnesota lakes, streams, and wetlands, and a cultural resource to many, particularly members of the Dakota and Ojibwe Tribal Nations in Minnesota.
Only a very small portion of the 1.35-million-acre Upper Big Sioux River Watershed is located in Lincoln County in western Minnesota; the vast majority is located in eastern South Dakota.
An August 2023 MPCA inspection confirmed failures to conduct weekly inspections and train staff to properly handle and store hazardous waste at its residential and commercial cabinet production facility in St. Cloud.
Join the celebration! We look forward to highlighting Minnesota’s clean water successes and invite you to use our 50th anniversary art and branded graphics.
Stormwater runoff is a leading source of water pollution, and the state general permit is designed to reduce the amount of sediment and other pollutants entering state waters.
Smith Foundry has ceased operations at its East Phillips facility after an investigation and settlement with the U.S. EPA that the MPCA supported.
The Pomme de Terre River begins cool and clear in Otter Tail County, bordered by wooded hills and grassy meadows. It flows south through several lakes; as the river nears its mouth, it is bordered by eroding banks, becoming increasingly muddy before discharging into the Minnesota River at Marsh Lake.
The Minnesota Department of Natural Resources (DNR) and Minnesota Pollution Control Agency (MPCA) sample and test fish in bodies of water where known pollution issues may be a concern for human health through fish consumption.
While hundreds of fish kills occur in Minnesota every year, mostly in lakes and ponds, fish kills on trout streams in southeast Minnesota are much less common.
Sanimax USA LLC failed to seek a required major air permit amendment and conduct air emissions modeling prior to making changes to its pollution control equipment systems in 2019 at its animal products rendering facility in South St. Paul, Minnesota.
Removing Middle Lake from the impaired waters list required wrangling with a bottom feeder, the invasive carp.
The MPCA is investigating the source of the chemical 1,4-dioxane in private wells in Gem Lake.
St. Paul Brass manufactures brass, bronze, and aluminum castings in the Frogtown neighborhood of Saint Paul, an environmental justice area.
The MPCA helps Minnesota communities reduce what they throw away, reuse and recycle materials, and deal responsibly with solid waste. From preventing wasted food to investment in innovative business…
Resources for wastewater clients.
The MPCA sought project proposals to distribute $1.1 million in grants for climate planning projects to small communities with populations of less than 10,000.