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An MPCA investigation determined David Heinonen of Grand Rapids filled in 3,200 square feet of wetland near Horsehead Lake in Itasca County without prior approval and engaged in unpermitted construction activities on 1.57 acres on the shore of Horsehead Lake.

Dentists in Minnesota must meet federal and state requirements to limit the amount of mercury in their wastewater.

The MPCA's Petroleum Remediation Program addresses risks to people and the environment from contamination caused by leaking petroleum storage tanks.

Addressing excess nutrient levels in Lake Pepin based on the site-specific water quality eutrophication criteria for the lake developed by the MPCA.

Ask the MPCA features questions Minnesotans have asked us, on the issues the agency works on, from waste disposal, water and air quality, and chemicals in products to recycling and reuse,…

The MPCA investigates sites where hazardous substances have been or could be released to identify risks and appropriate remediation plans.

$4.85 million to run community air monitoring projects in the 7-county Metropolitan Area (counties of Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington).

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

Minnesota's strategic, coordinated approach to protecting families and communities from per- and polyfluoroalkyl substances.

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.

Prevent costly sewer clogs by keeping grease out of sinks and by not flushing disposable wipes.

Join the celebration! We look forward to highlighting Minnesota’s clean water successes and invite you to use our 50th anniversary art and branded graphics.

Environmental regulations vary by industry. To help you navigate this, we've compiled key considerations based on common industries, processes, and equipment.

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

The MPCA is planning new rules governing air quality. The main purpose is to adopt new rules to implement and govern regulation of facilities that emit air toxics.

A series of new culverts in Lake County reconnect brook trout habitat and provide resilience to climate change for area roads.

The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for northwest Minnesota. The alert takes effect 6 a.m. on Wednesday, July 23, and runs until 11 p.m. on Friday, July 25. Air quality is expected to reach the red AQI category in northwest Minnesota, which is unhealthy for everyone.

The Cedar River Watershed in Minnesota encompasses 454,029 acres in Mower, Freeborn, Dodge, and Steele counties. This watershed covers prime agricultural land with many streams and drainage ditches flowing into the river.

Minnesota rules require that anyone installing, repairing, or removing regulated underground storage tanks be certified by the MPCA.

Instructions for preparing for and completing the online exam for underground storage tank operator certification.