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The Watershed Pollutant Load Monitoring Network (WPLMN) is a partnership that collects data on water quality and flow in Minnesota.
One of 12 major watersheds of the Minnesota River Basin, the Watonwan River Watershed covers 878 square miles in south-central Minnesota.
Loans are available to defray the capital costs of installing waste or pollution prevention machinery or equipment.
The MPCA issued the most recent municipal stormwater general permit (MNR040000) in November 2020.
Thanks to years of restoration efforts, the MPCA confirmed the Kabekona River meets water quality standards for recreation and proposed its removal from the 2026 impaired waters list.
Details on major and minor modifications of a solid waste management facility permit.
The MPCA provides financial and technical assistance to local government and other water resource managers to address nonpoint-source water pollution.
The Otter Tail River Watershed encompasses three different ecoregions, covering more than 1.2 million acres in west-central Minnesota.
Minnesota GreenStep Cities is a voluntary challenge, assistance, and recognition program to help cities achieve their sustainability and quality-of-life goals.
Image Stormwater has an enormous impact on water quality in Minnesota, whether it's runoff from farm fields or from urban hardscapes. Rain and snow…
Application forms and instructions for applying for wastewater permits.
Increased rainfall from climate change damages river water quality, which in turn damages fishing and recreation.
A project to address high levels of suspended sediment in the Minnesota River and the South Metro portion of the Mississippi River.
The Duluth Urban Area Watershed is a focused geographic area designed to recognize the complexity and challenges in an urban center with a water-rich environment. It is defined by a series of small watersheds that are portions of three major watersheds.
MPCA policy recommendations for the upcoming legislative session
The MPCA studies, monitors, and regulates numerous water pollutants to protect human health and the environment. At the state level, three agencies share the monitoring and control of pollutants:the…
Public input is critical to the work that we do. We invite that input by soliciting comments on agency decisions, holding public informational meetings, and more.
Water scientists from the MPCA published four watershed reports in 2025, updating the data we need to keep Minnesota’s waters clean and protected.
The effects of contaminants of emerging concern (CECs) on fish, wildlife, and humans are only partly understood. The MPCA has been collecting occurrence data for a diverse set of CECs, but toxicity…
This TMDL addresses 39 stream and river reaches in the Lower Mississippi and Cedar River basins with excess levels of fecal coliform.