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Permits for wastewater treatment require monthly, quarterly, or annual reporting of discharge monitoring results

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 participates in this statistical survey of the condition of our nation's lakes, ponds, and reservoirs.

Wastewater treatment plant in Elk River paid a $15,000 fine for consistently discharging fecal coliform and phosphorus into nearby Tibbets Brook.

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

MPCA investigation found stormwater permit violations that occurred during a construction project in 2025, with sediment-laden stormwater entering a stream at a construction site in Chaska.

Minnesota samples a network of shallow monitoring wells designed to provide early detection of contamination in the groundwater.

The Mississippi River - Twin Cities Watershed is 656,990 acres and lies almost entirely in the North Central Hardwoods Forest ecoregion in the Mississippi River Basin. The watershed contains 1,320 stream miles and 380 lakes. More than 1.8 million people live in this watershed.

Located in south-central Minnesota, the Le Sueur River flows 111 miles through a gently rolling landscape, most of it farmland, until it cuts down through high bluffs to the Blue Earth River.

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

Chloride is a problem for wastewater facilities and stormwater permittees.

The MPCA regulates the design, construction, and operation of treatment facilities for municipal and industrial wastewater in Minnesota.

Requirements for discharges from a project site and/or management control site(s).

Permit addresses the most common causes of contaminated groundwater, including releases of petroleum, volatile organic compounds, and other hazardous substances.

Farmers Grain, LLC, a grain elevator in Thief River Falls, paid $18,120 in fines for pumping contaminated water from their property into the city of Thief River Falls stormwater system.

The Lower Red River Watershed (also known as the Red River of the North - Tamarac River) drains an area of 281,000 acres, including parts of Kittson, Marshall, and Roseau counties.

The Minnesota portion of the Roseau River watershed covers 774,197 acres; an additional 594,560 acres are across the U.S. border in Canada.

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.

Regulatory certainty is an incentive for municipalities that will employ biological nutrient removal in their wastewater treatment technology, and that are willing to accept a nitrogen limits in…

The Red River of the North - Grand Marais Creek Watershed covers 298,264 acres and is part of the Red River Basin in northwestern Minnesota and southeastern North Dakota.