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Local governments with SSTS programs submit information to the MPCA each year on SSTS permitting and compliance trends for the previous calendar year. The information helps the agency with long-range planning efforts.

Permit applications must include detailed emissions calculations to help determine which permit type or permit amendment is needed.

New major-emitting industrial facilities and major modifications of existing facilities must obtain a permit before construction and include the best pollution-control technology available if they significantly increase emissions.

Completed rulemaking for changes to reporting requirements for hazardous air pollutants (HAPs).

There are two types of federal air regulations, the National Emission Standards for Hazardous Air Pollutants (NESHAPs) and New Source Performance Standards (NSPSs). Either or both regulations may…

The Root River starts as a drainage ditch in Mower County, then winds 81 miles from intensely farmed areas through more wooded, rolling terrain, and finally empties into the Mississippi River south of La Crosse, Wisconsin.

Septic system owners are responsible for system maintenance. Properly maintaining a septic system will extend its life.

DENCO II LLC failed a stack test in April, 2024, that showed that the facility exceeded its permit limit for particulate matter by more than 170%.

MPCA investigation in 2025 found that Sheldahl Flexible Technologies submitted incorrect permit applications and failed to obtain MPCA approval prior to installing or modifying three pieces of industrial mixing equipment.

Dem-Con Landfill proposes to build a new municipal solid waste landfill at its environmental campus near Shakopee. It plans to convert 2.2 million cubic yards covering an approximately 81-acre fill area of its permitted construction and demolition landfill into a new municipal solid waste landfill. The creation of a new MSW landfill of this size requires the project to go through the environmental impact statement process.

Important details to help make your e-Service administrative submittal go as smoothly as possible.

MPCA investigation found that Heron Lake BioEnergy LLC exceeded its permitted limits of particulate matter (PM) and hazardous air pollutants (HAPs) at its plant in Jackson County.

Pretreatment by commercial facilities and other non-domestic wastewater sources removes harmful pollutants before the wastewater is discharged to a municipal sewer system. The U.S. EPA has delegated MPCA the authority to approve pretreatment programs at the local level and oversee statewide pretreatment activities.

Minnesota is a national leader in keeping mercury out of the environment.

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

Answers to frequently asked questions about compliance and MPCA's enforcement of environmental rules in Minnesota.

Dem-Con is proposing a new facility that will process organic materials through anaerobic digesters at its environmental campus in Shakopee. The project requires an environmental assessment worksheet (EAW) and an air permit from the MPCA.

Austin's municipal wastewater treatment plant discharged ammonia and fecal coliform over permitted limits into the Cedar River.

Hutchinson Utilities exceeded its permit limit for particulate matter during an air quality performance test. High levels of particulates are known to cause environmental harm and health problems.

MPCA releases initial environmental assessment worksheet for a new municipal solid waste landfill proposed by Dem-Con at its environmental campus near Shakopee.