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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…
Minnesota state agencies and local governments are working together to protect drinking water supplies.
The northeast region of Minnesota is home to the state’s metallic mining industry. The "Iron Range" has a history of iron ore (“ferrous”) mining dating back to the late 1800s and includes the large…
MPCA evaluates water quality by measuring and monitoring the health of fish, macroinvertebrates, and plants.
MPCA's Closed Landfill Program is a voluntary program established in 1994 to properly close, monitor, and maintain Minnesota's closed municipal sanitary landfills.
Communities facing the impacts of air pollution will soon have new resources to understand and improve the air quality in their neighborhoods after the MPCA awarded $…
The MPCA has announced eight grant recipients that will receive a total of over $1 million in grants for projects focused on waste reduction and reuse. These statewide efforts will reduce greenhouse gas emissions and other pollutants, reduce the demand for resources, and reduce the amount of waste sent to landfills.
The MPCA regulates both underground and aboveground commercial storage tanks above a certain size that hold petroleum or hazardous liquids.
To help you quickly determine whether this permit affects you, what your requirements are, and what to do next, the MPCA has developed an Applicability flow chart
Create an editable spreadsheet with the information indicated below. Each step in your calculations needs to be clear and easy to follow.Facility informationProvide the facility ID, file number, and…
Tools and materials for partners and stakeholders interested in minimizing the impact of chloride on Minnesota lakes, rivers, and groundwater.
Countless bacteria can be found in land, water, humans, and animals. Most bacteria are beneficial, serving as food for larger organisms and playing critical roles in natural processes such as organic…
Minnesota rules require many facilities that produce air emissions to conduct performance testing.
A cumulative impacts analysis provides a comprehensive look at all burdens that affect a community or neighborhood.
Guidance and recommendations for local officials dealing with public health issues related to blue-green algae.
Environmental information and resources for the aggregate industry.
A water quality variance is a temporary change in a state's water quality standard for a specific pollutant and its relevant criteria, allowing deviation from meeting a water quality-based effluent limit for a particular discharger.
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 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.
The MPCA closed 118 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2023.