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One of the most basic forms of air pollution, haze reduces visibility in many cities and scenic areas within the United States. Haze-causing pollutants come from a variety of sources, both natural and man-made, including motor vehicles, electricity generation, industrial facilities, agriculture, and wildfires.
Check out MPCA's new online tool for learning about polluted sites across Minnesota.
MPCA permits are required for extensions, additions, or other modifications to sanitary sewer collection systems that result in new or increased discharges of pollutants.
The time that Andy Vig spends along the Minnesota River near Hoċokata Ṫi, cultural center of the Shakopee Mdewakanton Sioux Community, serves as a reminder of where his water comes from and a…
Clean Water Fund dollars come from the Clean Water, Land and Legacy Amendment that Minnesotans approved in 2008.
The Minnesota Pollution Control Agency has developed an updated draft air permit for Northshore Mining’s Peter Mitchell Mine in Babbitt that would control fugitive dust and particulate matter leaving the facility.
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…
Approximately $995,000 was available to develop, administer, and fund a financial assistance program for electric-powered landscaping and snow removal equipment. The goal of this grant is to reduce emissions and ground level exposure to air pollution in Environmental Justice areas.
There are two types of federal air regulations, the National Emission Standards for Hazardous Air Pollutants (NESHAPs) and New Source Performance Standards (NSPSs). Either or both regulations may…
Volunteer water monitors collect valuable data used by agencies and organizations across the state to protect and manage Minnesota’s waters.
Water scientists from the MPCA published four watershed reports in 2025, updating the data we need to keep Minnesota’s waters clean and protected.
The Snake River Watershed is located north of the Twin Cities in the St. Croix River Basin and encompasses 1,006 square miles in five counties: Aitkin, Kanabec, Mille Lacs, Pine, and Isanti.
If you're new to the septic system world at the county level, or even if you've been in the job for a while, MPCA offers videos and companion documents to provide valuable background and insights.
Pollutant and runoff maps and data for major watersheds; watershed monitoring and assessment reports.
The Minnesota Pollution Control Agency (MPCA) has canceled portions of the current air quality alert for western and southern Minnesota. The alert runs until 11 p.m. on Friday, July 25. Fine particle levels are expected to reach the red air quality index (AQI) category, a level considered unhealthy for everyone, in east central Minnesota, and the orange AQI category, a level considered unhealthy for sensitive groups, across the remainder of the alert area.
Air quality is expected to reach the red AQI category in southern Minnesota, which is unhealthy for everyone.The Minnesota Pollution Control Agency (MPCA) has…
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.
Francesca Crego, or Frannie, fondly recalls bike rides along the Mississippi River’s edge with her family. Growing up in the city, Frannie appreciated the feeling of mysticality brought by the river’…
The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for northern Minnesota. The alert runs until 6 p.m. on Monday, July 14. Air quality is expected to reach the red AQI category, which is unhealthy for everyone.
MPCA seeks public comment on two draft industrial wastewater permits for U.S. Steel Corp.’s Keetac mining area and tailings basin in Keewatin, Minnesota. These permits will improve protections for wild rice waters and human health.