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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.

Data shows that ice cover on Minnesota's lakes doesn't last as long as it used to. That means a shorter ice fishing season, yes, but it also has implications for the environment and Minnesota's fish and wildlife.

The Clean Water Council was created to advise the Legislature and the governor on the administration and implementation of the 2006 Clean Water Legacy Act

Waterways in the northeastern part of the state are generally in better condition than those in the southern, central, and western regions.

Allows new and expanding wastewater treatment facilities to receive a discharge permit prior to completion of an applicable phosphorus-related TMDL. Through pre-TMDL phosphorus trading a, a new or expanding facility may increase its phosphorus discharge by purchasing a phosphorus reduction from another source.

Minnesota’s air currently meets all federal air quality standards. However, even levels of air pollution below the standards can affect people’s health, including levels currently found in parts of Minnesota.

The Upper Iowa River is a 156-mile-long tributary of the Mississippi River that rises in Mower County in southeastern Minnesota near the Iowa border. It then flows south through three Iowa counties before flowing into the Mississippi. It drains nearly 641,000 acres (1,005 square miles).

MPCA invited grant proposals from public, private, and nonprofit delivery and commercial service providers to fund cleaner transportation vehicles.

Application fees must be submitted with your permit application. The submittal cover page form will help you add up the points assigned to each type of permit application or request. Multiply the…

Minnesota rules require many facilities that produce air emissions to conduct performance testing.

Chloride is a problem for wastewater facilities and stormwater permittees.

Tools to help small businesses determine if they need an air emissions permit and/or track compliance with their current air emissions permit.

MPCA policy recommendations for the upcoming legislative session

Septic system owners are responsible for system maintenance. Properly maintaining a septic system will extend its life.

Rundown of all the PFAS legislative wins from the most recent legislative session.

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

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

Apply for the 2025-2026 Minnesota GreenCorps program and spend a year working on environmental issues and making a difference in communities around the state.

To make electric school buses more affordable to school districts, the MPCA started a grant program that puts more of the cleaner buses on routes across the state.

Learn what you can do to protect yourself and your community from environmental problems caused by flooding.