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The general permits related to wastewater in Minnesota.

MPCA municipal wastewater permit staff

The MPCA provides technical assistance and training to help permitted facilities and regulated communities meet environmental requirements. The agency works cooperatively with permitted facilities to…

This page provides assistance for local units of government with development and implementation of their SSTS program.

Community wastewater treatment facilities and their operators play a critical role in maintaining a health community and preserving and protecting our waters.

Licensing and permitsCannabis businesses in Minnesota require a state license for their specific operation (micro-business, processor, retailer, etc.) from the Office of Cannabis Management. The…

This webpage will not only address potential noncompliance issues for air permittees, but it will help inspectors get all of the necessary information to facilities with one link.

Biosolids that will be applied to land must meet strict regulations and quality standards.

Businesses can find many ways to increase competitiveness and boost productivity.

Helping Minnesota businesses comply with environmental rules, reduce wastes and emissions, and reduce regulatory obligations.

Permit  2025 Multi-Sector General Permit for Industrial Stormwater (wq-strm3-102g) Effective June 1, 2025 Updates and new…

The MPCA developed the Wastewater Nitrogen Reduction and Implementation Strategy to decrease the wastewater sector’s nitrogen loads for the protection and restoration of bodies of water in and downstream of Minnesota.

Tools and materials for partners and stakeholders interested in minimizing the impact of chloride on Minnesota lakes, rivers, and groundwater.

The Minnesota Pollution Control Agency (MPCA)’s draft wastewater permit for the 3M facility at Cottage Grove adds new water quality protections for the Mississippi River and improves accountability through monitoring and reporting requirements. The draft permit is one of the most rigorous in state history and mandates the removal of certain per- and polyfluoroalkyl substances (PFAS) to levels below detection.

Tools to help small businesses determine if they need an air emissions permit and/or track compliance with their current air emissions permit.

The MPCA studies, monitors, and regulates water pollutants to protect human health and the environment. Minnesota water quality standards strives to protect water for use, measures health of waters, and guides limits on what regulated facilities can discharge to surface waters.

Agropur Inc., doing business as Le Sueur Cheese Company, land applied too much industrial byproduct, resulting in rates of nitrogen and phosphorus that exceeded the allowed limits by more than 10 percent. The violations occurred in 2022, near its cheese production facility in Le Sueur, Minnesota.

U.S. Steel Corp. operates the Minntac Taconite processing facility near the city of Mountain Iron, where it produces taconite pellets that are shipped for use at steel mills. U.S. Steel has applied for a reissued air permit so it can replace existing emissions controls in its pellet plant with cartridge filters.

Forms, guidance, and assistance to apply for an air quality permit.

Answers to common questions about the Construction Stormwater Permit application