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MPCA rules govern how septic systems are designed, installed, and managed in Minnesota.
Industrial Finishing Inc. violated several water quality permit conditions relating to required sampling, training, reporting and inspections at its industrial equipment coating and finishing facility in Deer Creek, Minn.
Central Specialties Inc., based in Alexandria, violated several air permit conditions between 2021 and 2023 for its mobile hot-mix asphalt facility stationed at various locations around the state. Violations included failing to properly maintain pollution control equipment and inadequate recordkeeping and reporting.
Environmental information and permits that affect businesses that paint, coat, or strip surfaces.
Businesses with low levels of actual emissions can submit a simplified permit application and obtain a registration permit, with greater flexibility to make changes as long as they continue to maintain permit requirements.
Minnesotans are encouraged to share feedback through Nov. 9, 2025
The MPCA is collaborating with many federal, Tribal, state, and local partners to clean up contaminated sites in the Duluth harbor and St. Louis River.
The MPCA studies Minnesota's solid waste composition and processes to inform policy recommendations, legislative proposals, education and outreach messages, and waste reduction efforts.
Chloride is a problem for wastewater facilities and stormwater permittees.
Training resources for feedlot officers in Minnesota.
Minnesota is a national leader in keeping mercury out of the environment.
The 2025 MPCA annual report on Brownfields celebrated numerous major achievements cleaning up and rehabilitating polluted properties.
The Performance Excellence Network has awarded the MPCA its Excellence Award for the agency's superior operational performance and commitment to continuous improvement.
Air pollution levels in Minnesota have steadily decreased over the past few decades and currently meet federal standards. But even levels that meet or are below these standards can affect people’s…
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.
Wastewater treatment and disposal are important for protecting and preserving Minnesota's water resources. MPCA regulates wastewater treatment activities in Minnesota.
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.
PFAS are persistent and problematic chemicals that are found throughout the environment and not just in areas where large quantities have been manufactured, disposed of, or spilled. PFAS are…
Minnesota is the first state government in U.S. to use this combination of innovative technologies to address "forever chemicals”
The MPCA has a mobile air monitoring program that allows the agency to respond faster to community air quality concerns across the state. The mobile air monitor collects data in areas where permanent…