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U.S. Steel Corp. operates a taconite mine and processing plant known as Keetac north of Keewatin, where it produces taconite pellets for use at iron and steel mills.
The MPCA completed 68 enforcement cases for water quality, air quality, hazardous waste, stormwater, and wastewater violations in the first half of 2025.
The MPCA uses the Environmental Quality Information System (EQuIS) to store water quality data from more than 17,000 Minnesota sampling locations.
Conditionally exempt facilities do not need an air quality permit if they follow specific requirements.
Licensing and certification requirements for SSTS businesses and professionals.
Industrial Stormwater Steps to Compliance - Step 5: Gather application materials before applying, use the e-Service to apply or modify coverage
Chrome-plating facility in St. Louis Park is the alleged source of pollution in local lakes.
The Duluth Urban Area Watershed is a focused geographic area designed to recognize the complexity and challenges in an urban center with a water-rich environment. It is defined by a series of small watersheds that are portions of three major watersheds.
Groundwater is the source of drinking water for about 75% of all Minnesotans and provides almost all of the water used to irrigate crops. Its purity and availability is critical to the health of the state.
Tools and materials for partners and stakeholders interested in minimizing the impact of chloride on Minnesota lakes, rivers, and groundwater.
Certain types of permits and approvals to conduct solid waste activities require a notification to the MPCA of the intent to perform the specified solid waste activity.
A successful cleanup of contaminated land along the Cedar River in Austin caps a long history of industrial pollution.
Climate adaptation identifies strategies and actions that help human and natural systems cope with and become more resilient to the impacts of climate change.
Learn what a brownfield is, how it can negatively affect communities, and resources for cleaning one up.
Minnesota industrial stormwater permittees in certain industries to monitor for PFAS in their stormwater runoff or snow.
Controlling phosphorus is an important part of protecting Minnesota waters.
Minnesota is the first state government in U.S. to use this combination of innovative technologies to address "forever chemicals”
This page provides assistance for local units of government with development and implementation of their SSTS program.
A new facility that will process organic materials through anaerobic digesters in Shakopee.
Information about the work to clean up the pollution from over 100 years of unregulated development and industrial practices.