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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.

Researchers collect samples of sediment from the bottom of Lake of the Woods in 2024. (Photo courtesy of St. Croix Watershed Research Station) After years of study…

Countless bacteria can be found in land, water, humans, and animals. Most bacteria are beneficial, serving as food for larger organisms and playing critical roles in natural processes such as organic…

The East Fork Des Moines River Watershed covers 839,518 acres, which includes Minnesota's Martin and Jackson counties.

This RFP provides a mechanism for interested parties to acquire a limited volume of PFAS concentrate for PFAS destructive technology testing purposes.

MPCA investigation confirms discharges sediment-laden water into the Long Prairie River, in addition to other violations, during construction of CSAH 56 & 38.

Groundwater is the source of drinking water for about 75% of all Minnesotans and provides almost all of the water used to irrigate crops. Its purity and availability is critical to the health of the state.

What consumers should know about new Minnesota laws prohibiting PFAS in consumer products and the MPCA’s efforts to minimize PFAS pollution by keeping it out of commonly used household products.

For National Farmers Day, a profile of pork and crop farmer Randy Spronk of Edgerton, Minnesota, and his sustainable ag practices.

The MPCA has developed best practices for vapor intrusion mitigation and public communication work used by the agencies and our contractors.

Pesticide NPDES Permit Steps to Compliance Step 2: submit a notice of intent

The city of Duluth will pay a $12,000 fine and spend $190,000 in compensation for a 2024 incident that led to a fish kill in Tischer Creek.

Carver County and Valley Paving Inc. failed to properly install and maintain erosion and sediment controls during a highway safety improvement project in the fall 2022 and spring 2023 near Watertown, Minn. This caused significant erosion and sediment to impact several area surface waters.

The triennial standards review (TSR) gives the public a formal opportunity to provide wide-ranging comments about water quality standards.

Environmental information and permits that affect businesses using boilers.

First of a series of MPCA staff profiles. Kevin Stroom conducts research on streams and has published a report about Straight River.

In rules, an incorporation by reference states that the contents of another document are part of the rule, even though the text of the referenced document does not appear in the rule itself.

Healthy land and soil is essential for thriving Minnesota communities. It drives economic development and opportunity, improves our health, and contributes to clean water for drinking and recreation…

Resources developed by the Minnesota Department of Health and the Minnesota Pollution Control Agency to help you spread the word about how Minnesota will reduce “forever chemicals” through Amara’s Law.

MPCA and the Minnesota Department of Health continue to sample private residential wells, municipal wells, and non-community public wells (e.g., small businesses, churches, schools) in the East Metro area for per- and polyfluoroalkyl substances (PFAS)