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Implementing water quality standards come with tangible costs and benefits. Costs such as taxes to residents, regulated parties, and communities help achieve benefits such as increased property values, tourism, and protecting human health.

Medicines flushed down the drain can contaminate water, which can hurt fish and other aquatic wildlife, and end up in our drinking water.

Southeastern Minnesota is characterized by an unusual type of geography called karst, where the distinction between groundwater and surface water is blurry.

Systems to treat drinking water have been installed to address groundwater contamination in two St. Louis Park and three Edina municipal wells.

Increasing organics collection and processing infrastructure is necessary to meet statewide recycling goals

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.

The MPCA library provides access to the agency's curated collection of environmental information for agency employees, external professionals, and the public.

Water scientists from the MPCA published four watershed reports in 2025, updating the data we need to keep Minnesota’s waters clean and protected.

Environmental regulations vary by industry. To help you navigate this, we've compiled key considerations based on common industries, processes, and equipment.

The PFAS guidance document uses an evidence-based approach that builds upon the framework and strategies presented in previous MPCA publications.

To obtain coverage under this permit, the owner(s) must document compliance with the criteria for coverage under this general permit, prior to disposal of the uncontaminated concrete.

Coal tar-based sealants can no longer be sold or applied legally in Minnesota as of 2014.

The MPCA Brownfield Program is a fee-for-service program that provides assistance to promote the investigation, cleanup, and redevelopment of property that is contaminated with petroleum and hazardous substances.

The MPCA is working to address environmental concerns at the closed Freeway Landfill, to prevent the buried waste from affecting drinking water and the nearby Minnesota River.

Information about the work to clean up the pollution from over 100 years of unregulated development and industrial practices.

Environmental information and permits that affect businesses that paint, coat, or strip surfaces.

Contaminated land creates significant problems for our health, environment, and economy in Minnesota. By cleaning up problem areas and protecting against future contamination, we can make land safe…

Minnesota’s policy is to eliminate or reduce the use, generation, and release of toxic pollutants and hazardous wastes at their source.

The U.S. EPA approved Minnesota's Statewide Mercury Total Maximum Daily Load study in March 2007.

Excess phosphorus is harming Minnesota waters. Phosphorus comes from both regulated and non-regulated sources. A quarter of Minnesota lakes have high levels of phosphorus, which means that they do…