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Permit applications must include detailed emissions calculations to help determine which permit type or permit amendment is needed.
Join the celebration! We look forward to highlighting Minnesota’s clean water successes and invite you to use our 50th anniversary art and branded graphics.
All facilities with air permits must submit an annual emissions inventory report to the MPCA that tracks actual emissions of major pollutants at that facility.
Sanimax USA LLC failed to seek a required major air permit amendment and conduct air emissions modeling prior to making changes to its pollution control equipment systems in 2019 at its animal products rendering facility in South St. Paul, Minnesota.
Water scientists from the MPCA published four watershed reports in 2025, updating the data we need to keep Minnesota’s waters clean and protected.
Designing stormwater systems to handle the challenges of climate change differs in every community across the state. Here’s how one community is meeting that challenge
Application forms and instructions for applying for wastewater permits.
Septic system owners are responsible for system maintenance. Properly maintaining a septic system will extend its life.
The MPCA has a variety of educational displays, programs, and materials about chloride pollution. We encourage our partners to utilize these resources to engage with their community.
Thirty TMDLs undertaken in the Mississippi River - Twin Cities Watershed to address excess nutrients, turbidity, bacteria, and more.
Industrial Stormwater Steps to Compliance - Step 2: Consider certifying for No Exposure
As Minnesotans prepare for another summer of outdoor activities, MPCA meteorologists are forecasting a moderately active air quality season.
Instructions for preparing for and completing the online exam for underground storage tank operator certification.
Financial assistance for SSTS work is targeted to units of local government.
Minnesota rivers are shrinking in the drought; some have their lowest flows in decades. What will be the long term effects?
The MPCA had $5 million available to support the implementation of projects to increase resilience to the impacts of climate change in communities across Minnesota.
Sustainable aviation fuel (SAF) is low-carbon synthetic fuel made from non-petroleum sources that is blended with traditional jet fuel to reduce greenhouse gas emissions from air transportation.
Minnesota has a new law that prohibits nonessential use of per- and polyfluoroalkyl substances (PFAS).
Learn what you can do to protect yourself and your community from environmental problems caused by flooding.
The MPCA solicited project proposals to distribute $10 million to communities for projects to prepare local wastewater infrastructure for the impacts of climate change. These projects are specifically meant to protect water quality and increase resilience.