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Status of total maximum daily load (TMDL) projects in Minnesota.

Guidance on NPDES/SDS construction stormwater requirements

James Wooton puts his scuba diving skills to work monitoring for aquatic invasive species in Otter Tail County lakes.

Determine if your facility requires an air permit and, if so, which permit type may be the best fit for your business.

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

Clean heavy-duty off-road equipment grants fund the replacement of older, more polluting diesel equipment with newer, cleaner technology.

Prevent costly sewer clogs by keeping grease out of sinks and by not flushing disposable wipes.

Guidance for MPCA contractor and subcontractors

Polycyclic aromatic hydrocarbons (PAHs) are a class of more than 100 chemicals that occur naturally in coal, crude oil, and gasoline, and are also present in products made from fossil fuels, such as…

People who service and dispose of vehicle air conditioners or appliances that contain refrigerants must be certified.

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.

The Burnsville Sanitary Landfill (BSL) will expand to accommodate the growing municipal waste needs of the Twin Cities metro area. The expansion is part of the landfill’s long-term plan to extend the useful life of the landfill to 2062.

MPCA permits are required to both build and operate landfills in Minnesota.

Environmental information and resources for the biochar industry.

The 2025 MPCA annual report on Brownfields celebrated numerous major achievements cleaning up and rehabilitating polluted properties.

The MPCA is working with the city of Minneapolis to identify sources of air pollution in North Minneapolis and find strategies to reduce emissions.

Demonstration/research projects (DRPs) allow permittees to explore potential beneficial uses or new methods of solid waste management through a limited-scale project.

Environmental information and permits that affect businesses using boilers.

The MPCA completed 78 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2025, for a total of 146 for the year.

Environmental information and permits that affect businesses using stationary engines or generators.