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The MPCA enforces federal and state requirements for air quality permitting.
Mesabi Metallics is currently constructing a new taconite mine and taconite pellet production facility on the site of the former Butler Taconite Mining Company facility near Nashwauk.
Minnesota’s Continuous Nitrate Sensor Network generates publicly available water quality data on nitrate levels in our surface water.
The MPCA sought a contractor to lead the effort to identify and replace Tribal members' old wood stoves that are not certified by the U.S. EPA.
Permit applications must include detailed emissions calculations to help determine which permit type or permit amendment is needed.
What to consider when cold weather has you looking into home weatherization projects
The MPCA is planning new rules governing air quality. The main purpose is to adopt new rules to implement and govern regulation of facilities that emit air toxics.
Minnesota businesses, organizations, and municipalities seeking or holding MPCA wastewater permits are charged two basic types of permit fees: application fees and annual fees.
Financial assistance for assessment and clean up of contaminated sites in Minnesota.
The Snake River begins its 50-mile course in Marshall County and drains an area of 611,800 acres. The Snake River Watershed lies within Marshall, Polk, and Pennington Counties in NW Minnesota.
Northern Iron operates an iron foundry in an environmental justice area in Saint Paul's Payne-Phalen neighborhood.
Two small creeks in the Nemadji River watershed are cleaner, and some fish have returned, after restoration work that the MPCA took part in.
The MPCA completed 68 enforcement cases for water quality, air quality, hazardous waste, stormwater, and wastewater violations in the first half of 2025.
Residents' guide to stormwater permitting.
Nitrogen management plans help operators of wastewater treatment facilities understand the inputs of nitrogen to their facilities and evaluate options that can reduce the amount of nitrogen discharged.
Responding to complex, technical product specificationsAsk questions! Use the Q&A process outlined in the Request for Proposal (RFP) or Request for Bid (RFB)Some sustainability improvements lead…
The MPCA issued the most recent municipal stormwater general permit (MNR040000) in November 2020.
Minnesota state agencies and local governments are working together to protect drinking water supplies.
Image Aboveground storage tank (AST) requirements are found in Minnesota Rules, Chapter 7151. In general:new tanks and piping must be designed to…
Northshore Mining Company has applied for updated wastewater and air quality permits for its Silver Bay taconite processing plant and Mile Post 7 tailings basin.