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Online tool showing Minnesota waters failing to meet one or more water quality standards.

An index of biological integrity (IBI) is a particularly powerful tool that provides an accurate measure of the condition of the biological communities and are a direct determinant of the attainment of aquatic life uses.

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).

For more than 50 years, volunteers have gathered critically important water clarity data on Minnesota lakes and streams.

Biosolids that will be applied to land must meet strict regulations and quality standards.

The Burnsville Sanitary Landfill (BSL) will expand to accommodate the growing municipal waste needs of the Twin Cities metro area. The expansion is part of the landfill’s long-term plan to extend the useful life of the landfill to 2062.

The MPCA regulates both underground and aboveground commercial storage tanks above a certain size that hold petroleum or hazardous liquids.

Answers to questions frequently asked by municipalities about management of contaminated sediments in stormwater collection systems that they own and operate.

Only a very small portion of the 1.35-million-acre Upper Big Sioux River Watershed is located in Lincoln County in western Minnesota; the vast majority is located in eastern South Dakota.

The Little Sioux River Watershed covers more than 1.8 million acres in southwestern Minnesota. Its small prairie streams flow through the southern portions of Nobles and Jackson counties and into Iowa.

MPCA rules govern how septic systems are designed, installed, and managed in Minnesota.

In 2009, a federal court ruled that NPDES permits were required for all biological and chemical pesticide applications that leave a residue in water when applications are made in, over, or near waters of the United States.

The Two Rivers Watershed is part of the Red River Basin in northwestern Minnesota. Two Rivers actually consists of three branches: the North, Middle, and South Branch.

The Cloquet River Watershed covers approximately 507,858 acres (794 square miles) and is located within portions of Lake and St. Louis Counties in northeastern Minnesota.

Companies penalized for improperly releasing polluted stormwater at Xcel Energy’s St. Paul Service Center construction site on the east side of Saint Paul.

Within the three major watersheds that cover the Twin Cities area, there are 33 smaller watersheds managed by their own watershed district or watershed management organization.

The MPCA provides workshops and conferences to help solid waste landfill operators get certified and stay up to date.

Apply for funds to help assess sites with known or suspected contamination and develop remediation plans.

Minnesota’s extended producer responsibility bill for packaging, food packaging, and paper products requires a producer responsibility organization to reduce the environmental and human health impacts of these materials.

The Lower Des Moines River Watershed is located in southwestern Minnesota. It covers approximately 703,000 acres.