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A watershed is the area of land where all of the water that drains off of it goes into the same place — a river, stream or lake.

To help you quickly determine whether this permit affects you, what your requirements are, and what to do next, the MPCA has developed an Applicability flow chart

The Bois de Sioux River Watershed covers 718,685 acres, and includes the drainage basins of Lake Traverse and the Bois de Sioux River.

A project to address excess sediment and turbidity in the Mississippi River, from Fort Snelling at St. Paul to upper Lake Pepin at Red Wing, based on a site-specific standard developed by the MPCA and Wisconsin Department of Natural Resources.

This committee included a broad range of stakeholders and was charged with providing perspective, input, and advice to the commissioner on MPCA's water fees.

Ten TMDL projects undertaken in the Lower St. Croix River Watershed to address nutrient, biota, bacteria, and other impairments.

In Minnesota, about 18,000 regulated underground storage tanks (UST) are in use. State rules specify requirements for underground storage tanks (UST) that store petroleum or hazardous substances, and any piping or other structures that are part of the tank systems.

The MPCA studies, monitors, and regulates water pollutants to protect human health and the environment. Minnesota water quality standards strives to protect water for use, measures health of waters, and guides limits on what regulated facilities can discharge to surface waters.

This Winnebago River consists of a stream and lake system in southern Minnesota that flows into Iowa. The water resources here face several water quality challenges, including high nutrient and bacteria levels.

MPCA solicited proposals from qualified contractors to research and report on the projected costs of climate change adaptation and resilience measures needed to mitigate the projected impacts in Minnesota.

The air emissions breakdown/shutdown notification form is required by rule to prevent endangerment of human health or the environment.

When people think of sources of air pollution, they typically think about buildings with big smokestacks like power plants and factories. Only about a quarter of the air pollution in Minnesota comes…

Certain proposed projects — based on their nature, size, location, or other factors — must go through an environmental review before any required permits or approvals are issued.

The Red Lake River Watershed, which covers 909,024 acres, is part of the Red River Basin in northwestern Minnesota. The Red Lake River begins its course in Beltrami County at Lower Red Lake.

MPCA sought proposals from qualified environmental contractors for a contract to support the agency's Watershed Division on statewide, basin-wide, water body, and watershed scale projects.

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 solicited project proposals to distribute $35 million to communities for projects to prepare local stormwater infrastructure for the impacts of climate change.

Most AST systems that contain liquid capable of polluting the waters of the state are subject to state rules and permits.

The MPCA completed 75 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2024.

MPCA guidance on petroleum site investigation and remediation, reporting, and more.