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Most AST systems that contain liquid capable of polluting the waters of the state are subject to state rules and permits.
Two small creeks in the Nemadji River watershed are cleaner, and some fish have returned, after restoration work that the MPCA took part in.
How to prepare recycling for the curb
The Performance Excellence Network has awarded the MPCA its Excellence Award for the agency's superior operational performance and commitment to continuous improvement.
The triennial standards review offers every Minnesotan the opportunity to comment on essentially every water quality standard the agency defines to protect the waters that they drink, swim in, and fish from.
Three committees are accountable to and advise the full Clean Water Council. Meetings are scheduled and open to the public.
AccessibilityThe Minnesota Pollution Control Agency is committed to accessibility on its website. As part of that commitment, the MPCA makes every effort to comply with the State of Minnesota…
Volatile organic compounds (VOCs) are a group of chemicals that can vaporize into air. VOCs are in thousands of daily use products, including paint, varnish, wax, and various cleaning, degreasing,…
Removing Middle Lake from the impaired waters list required wrangling with a bottom feeder, the invasive carp.
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.
James Wooton puts his scuba diving skills to work monitoring for aquatic invasive species in Otter Tail County lakes.
As Minnesotans prepare for another summer of outdoor activities, MPCA meteorologists are forecasting a moderately active air quality season.
The 2026 Climate Action Framework prioritizes reducing greenhouse gas emissions and protecting Minnesotans
Water quality trades that have been arranged in Minnesota illustrate many opportunities to enhance pollution reduction efforts while offering flexibility and cost savings to regulated municipalities and industries.
Water quality standards are frequently adopted statewide or by ecoregions. These standards can include large areas with different types of water, biological communities and natural water chemistries.
Answers to common questions about the Construction Stormwater Permit application
The MPCA issued the most recent municipal stormwater general permit (MNR040000) in November 2020.
In Minnesota, handlers of oil and hazardous substances are required to prepare for potential spills and take steps to prevent them.
Partnerships and diversified funding drive the work to restore water quality in impaired streams in the Red Lake River Watershed through science-based interventions.
Forms, guidance, and assistance to apply for an air quality permit.