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Tools and materials for partners and stakeholders interested in minimizing the impact of chloride on Minnesota lakes, rivers, and groundwater.

MPCA municipal wastewater permit staff

The MPCA has initiated a declaratory judgement action against the owners of the Freeway Landfill and Freeway Dump in Burnsville to protect the drinking water supply for Burnsville and Savage residents.

Communities that are resilient to climate change are able to effectively to prepare for and recover from its effects, and continue to thrive.

MPCA established a network of long-term biological monitoring stations that represent a variety of stream types in their most natural condition.

The Shell Rock River begins at Albert Lea Lake in Freeborn County in south-central Minnesota, a few miles from the Iowa border. It flows 113 miles into Iowa, where it enters the Cedar River. In Minnesota, the Shell Rock drains 246 square miles (160,000 acres), all in Freeborn County.

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

In Minnesota, wastewater treatment operators must be certified to ensure that facilities meet operational requirements.

Before Laura Mendoza Romero got involved with shoreline restoration, she remembers going on boat rides and seeing all the different landscapes along the shore. Some houses you could barely see…

MPCA rules govern the collection, transportation, storage, processing, and land application of animal manure and other livestock operation wastes.

The Root River starts as a drainage ditch in Mower County, then winds 81 miles from intensely farmed areas through more wooded, rolling terrain, and finally empties into the Mississippi River south of La Crosse, Wisconsin.

What is a stormwater catch basin, and should I be worried about it?

Wastewater treatment and disposal are important for protecting and preserving Minnesota's water resources. MPCA regulates wastewater treatment activities in Minnesota.

MPCA staff studied the river during this summer's extreme drought conditions to see if tighter limits on phosphorus are protecting aquatic life.

Information about the work to clean up the pollution from over 100 years of unregulated development and industrial practices.

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.

Austin's municipal wastewater treatment plant discharged ammonia and fecal coliform over permitted limits into the Cedar River.

Plastic can be recycled, but it’s often not, a situation the MPCA aims to resolve with grants to develop markets for recycled plastic.

Sediment is composed of loose particles of sand, clay, silt, and other substances. Sediment flows into Minnesota lakes, rivers, and streams via runoff in both urban and rural areas.

The 2025 MPCA annual report on Brownfields celebrated numerous major achievements cleaning up and rehabilitating polluted properties.