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Guidance development process

The PFAS guidance document uses an evidence-based approach that builds upon the framework and strategies presented in previous MPCA publications.

Wastewater permitting

Wastewater treatment and disposal are important for protecting and preserving Minnesota's water resources. MPCA regulates wastewater treatment activities in Minnesota.

State experts forecast 2025 summer air quality: outlook highlights ozone, drought, wildfire smoke, and new guidance

As Minnesotans prepare for another summer of outdoor activities, MPCA meteorologists are forecasting a moderately active air quality season.

Grandma's Marathon, Minneapolis Toy Library among recipients of $1 million in MPCA grants for waste reduction and reuse

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.

MPCA completes 68 enforcement cases in first half of 2025

The MPCA completed 68 enforcement cases for water quality, air quality, hazardous waste, stormwater, and wastewater violations in the first half of 2025.

Wastewater permit fees

Minnesota businesses, organizations, and municipalities seeking or holding MPCA wastewater permits are charged two basic types of permit fees: application fees and annual fees.

After more than 20 years, restoration of Kohlman Lake sees results

Kohlman Lake, one of 27 bodies of water to come off the impaired waters list this year, did so with substantial help from the Clean Water Fund.

Summer is ozone season

Hot, sunny weather brings the possibility of air quality alerts due to ozone. But what exactly is ozone?

MPCA's Kevin Stroom sees the big picture by studying the smallest creatures

First of a series of MPCA staff profiles. Kevin Stroom conducts research on streams and has published a report about Straight River.

Getting “musscular” for water stewardship

Dakota County is now hosting We Are Water MN, a traveling exhibit and community engagement program that explores Minnesotans’ relationships with water.

Closed: Statewide environmental assistance grants

MPCA had approximately $250,000 in grant funding available to help Minnesota governments, businesses, institutions, and organizations address two specific needs: waste reduction/reuse and toxic products prevention.

Option D air permit compliance

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.

MPCA laboratory certification

The MPCA certifies Minnesota municipal, government, or industrial laboratories that are used to comply with National Pollution Discharge Elimination System (NPDES)/State Disposal System (SDS) permits or for water quality work for agency programs.

Area of concern public participation

Collaboration and engagement have been keys to progress in the St. Louis River AOC.

Awarded: Statewide waste reduction and reuse grants

The MPCA had just over $800,000 available to support waste reduction and reuse projects across the state.

Incident response

Minnesota law requires that people notify the MPCA (through the Minnesota Duty Officer) immediately when more than five gallons of petroleum or any amount of any substance under their control is released into the environment that could cause pollution of waters of the state.