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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.

The MPCA had just over $800,000 available to support waste reduction and reuse projects across the state.

First of a series of MPCA staff profiles. Kevin Stroom conducts research on streams and has published a report about Straight River.

This long-term data gathering initiative helps track trends in water bodies around the state. The MPCA is grateful for every volunteer who has dedicated time to monitoring their favorite lake or stream.

The Rapid River watershed covers 573,060 acres in northern Minnesota. Over 79% of the land in the watershed is owned or managed by state entities.

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

Guidance on NPDES/SDS construction stormwater requirements

What is a stormwater catch basin, and should I be worried about it?

The MPCA is committed to engaging broadly with the public and ensuring that residents affected by its decisions have a voice in its processes.

Carver County and Valley Paving Inc. failed to properly install and maintain erosion and sediment controls during a highway safety improvement project in the fall 2022 and spring 2023 near Watertown, Minn. This caused significant erosion and sediment to impact several area surface waters.

$5.5 million grant from the U.S. EPA will help three Minnesota school districts partially electrify their bus fleets.

Ground-level ozone is a secondary pollutant formed through chemical reactions between nitrogen oxides (NOx) and volatile organic compounds (VOCs). Ozone can irritate the eyes, nose and throat,…

Minnesota is a national leader in keeping mercury out of the environment.

A series of new culverts in Lake County reconnect brook trout habitat and provide resilience to climate change for area roads.

We Are Water next visits Ortonville and the Big Stone Lake area March 15 through April 21.

Find out what’s being done in Minnesota’s watersheds to protect and improve water quality.

State government agencies, in collaboration with local partners, are leading trailblazing work to protect Minnesotans from per- and polyfluoroalkyl substances (PFAS) pollution.

The Army has proposed a plan for cleaning up contaminated sediment in Round Lake, located within the Twin Cities Army Ammunition Plant (TCAAP) site.

James Wooton puts his scuba diving skills to work monitoring for aquatic invasive species in Otter Tail County lakes.

What consumers should know about new Minnesota laws prohibiting PFAS in consumer products and the MPCA’s efforts to minimize PFAS pollution by keeping it out of commonly used household products.