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The MPCA is developing a sulfate multi-discharger variance (MDV) for wastewater facilities that are currently unable to meet the state water quality standard for sulfate.

Air quality is expected to reach the orange AQI category, which is unhealthy for sensitive groups, in the Twin Cities and central Minnesota

The MPCA is working with the city of Minneapolis to identify sources of air pollution in North Minneapolis and find strategies to reduce emissions.

The MPCA and its many partners collect a wide variety of data on environmental conditions and pollution sources.

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

The Watershed Pollutant Load Monitoring Network (WPLMN) is a partnership that collects data on water quality and flow in Minnesota.

Minnesota continues to reduce industrial and transportation air pollutants that have the highest potential health risks. Investment in clean air for all Minnesotans is a top priority for the MPCA and Governor Walz.

The northeast region of Minnesota is home to the state’s metallic mining industry. The "Iron Range" has a history of iron ore (“ferrous”) mining dating back to the late 1800s and includes the large…

Chrome-plating facility in St. Louis Park is the alleged source of pollution in local lakes.

Image Air quality is expected to reach the orange AQI category for much of Minnesota, which is unhealthy for sensitive groupsThe Minnesota Pollution…

The Minnesota State Implementation Plan (SIP) is focused on the six criteria air pollutants regulated by national ambient air quality standards (NAAQS): ground-level ozone, fine particles, lead, nitrogen dioxide, carbon monoxide, and sulfur dioxide.

Environmental information and permits that affect businesses using stationary engines or generators.

Trichloroethylene (TCE) is a man-made chemical commonly found in wood finishes, glues and adhesives, paint or paint removers, and spot and metal cleaners. Exposure can have significant effects…

After many years of investigation, design work and construction, the Great Lakes Legacy Act remediation projects at these sites near Duluth, Minnesota, are complete.

The MPCA completed 78 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2025, for a total of 146 for the year.

The MPCA's chloride reduction program assists communities and organizations across Minnesota in identifying sources of chloride.

MPCA sought proposals from qualified responders for a contract conducting a waste characterization study evaluating the types of materials generated and discarded in Minnesota and their relative prominence in Minnesota’s waste streams.

The MPCA sought proposals from qualified responders to conduct an environmental forensics evaluation using non-targeted analysis techniques for identifying sources of non-aqueous film forming foam (non-AFFF) per- and polyfluoroalkyl substances (PFAS) contamination in water.

MPCA studies shows 75% of Minnesota lakes meet standards for recreation. Clean Water Fund dollars help answer water quality questions.

Image Air quality is expected to reach the orange AQI category, which is unhealthy for sensitive groups, in southern, central, and western Minnesota…