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This TMDL addresses 39 stream and river reaches in the Lower Mississippi and Cedar River basins with excess levels of fecal coliform.

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

MPCA has developed a draft wastewater permit for the MagIron LLC facility near Grand Rapids, Minn. The facility will process former natural iron ore mining waste material into high-grade, low-impurity iron ore concentrate at the site and supply electric arc furnace steelmaking.

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

MPCA recognized 253 municipal and industrial wastewater treatment plants for outstanding operations in 2023.

Salt is commonly over-applied, sending too much chloride into our waterways and wreaking havoc on fish and other wildlife.

Fire departments are often the first responders to incidents that include spills of hazardous substance.

Volunteer water monitors collect valuable data used by agencies and organizations across the state to protect and manage Minnesota’s waters.

The Crow Wing River Watershed is located in north-central Minnesota and covers approximately 1,946 square miles within the counties of Becker, Cass, Clearwater, Crow Wing, Hubbard, Morrison, Otter Tail, Todd, and Wadena.

The Mustinka River begins its course southwest of Fergus Falls in southwestern Otter Tail County and flows toward the south into Grant County, where it continues through Stony Brook Lake and Lightning Lake.

Seventeen TMDL projects undertaken in the Lower Minnesota River Watershed, to address nutrient, turbidity, fecal coliform, chloride, and other impairments.

Cleaner water is taking hold across Minnesota this Earth Day as farmers and communities scale up solutions that protect rivers, strengthen soil, and build resilience from headwaters to downstream lakes.

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

The Upper/Lower Red Lake Watershed covers more than 1.2 million acres and is home to Upper and Lower Red Lakes, the two largest bodies of water within the state.

Nitrogen, like phosphorus, is a nutrient that pollutes in state waters, and its concentration in many rivers has been increasing from historic natural levels over time due to human influences.…

The MPCA is proposing to amend Minnesota Rules governing animal feedlots.

Planned amendments to Minn. Rules ch. 7050 affect the Class 1 beneficial use, which protects waters (both surface and groundwater) used as a source for domestic consumption.

From January through March 2025, MPCA air monitoring data showed elevated lead levels that exceeded national ambient air quality standards near the facility. An MPCA inspection of Gopher Resource in spring 2025 confirmed that the source of the elevated lead levels was addressed.

In Minnesota, backyard burning is illegal for most homeowners. Change disposal habits to protect human health and reduce pollution.

This watershed is located in the southeastern tip of Minnesota, known for its scenic bluffs. More than 900,000 acres drain to the Mississippi River at Reno, Minn., but only 117,000 of those acres are in Minnesota.