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The MPCA administers programs that are governed by 45 chapters of rules. The MPCA periodically conducts a “housekeeping” rulemaking to make minor corrections and clarifications to the rules or to repeal rules that have become obsolete.

Excess nitrate remains a long-term challenge to manage. In our lakes, rivers, and streams, it is toxic to fish and other aquatic life. In drinking water, it can pose a risk to human health,…

Climate adaptation identifies strategies and actions that help human and natural systems cope with and become more resilient to the impacts of climate change.

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

MPCA evaluates water quality by measuring and monitoring the health of fish, macroinvertebrates, and plants.

Karst near Oxbow Park and Zollman Zoo, host of the We Are Water MN traveling exhibit. Phil George, who lives in rural Byron, Minnesota, has always felt a deep…

Researchers collect samples of sediment from the bottom of Lake of the Woods in 2024. (Photo courtesy of St. Croix Watershed Research Station) After years of study…

The Soiled Undies exhibit at the Eco Experience at the Minnesota State Fair might look off-putting at first, but it's a good demonstration of the importance of soil health and how healthy soil can help the environment.

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’…

We Are Water MN travels to Chisago County, where Dawn White has served as an educator and policy team member focused on preserving waters.

Under the federal Clean Water Act, states must designate beneficial uses for all waters and develop water quality standards to protect each use.

When leaves fall on streets, sidewalks, and other hardscapes in urban areas, they wash into the storm drains and end up in lakes and rivers where they feed algae growth. The algae then decomposes and uses up oxygen that fish and native plants need.

Elk River Landfill, Inc. proposes to expand its existing municipal solid waste (MSW) landfill near Elk River.

The Air We Breathe report looks at public health and air quality data to gauge how air pollution is affecting our health in Minnesota.

Batteries aren’t trash, they’re treasure: Recycling old batteries gives their materials a new life. Visit CollectED's new, carnival-style interactive exhibit at MPCA's Eco Experience at the Minnesota State Fair to learn more about batteries.

Minnesota is the first state government in U.S. to use this combination of innovative technologies to address "forever chemicals”

The frequent wildfires in California and elsewhere, brought on by climate change, are affecting air quality for thousands of miles. That includes Minnesota.

Minnesota GreenCorps member Leslie Alcantar Mejia helped Hennepin County toward its goal of planting 1 million trees during her service term.

The Nemadji River Watershed spans the Minnesota-Wisconsin border and covers nearly 1.2 million acres.

State and federal permits and regulations that are designed to protect groundwater and surface water (lakes, rivers, streams, and wetlands) apply to specific facilities and processes that could pose…