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Chloride is a problem for wastewater facilities and stormwater permittees.

From the days when raw sewage flowed into rivers and lakes, Minnesota’s water bodies have come a long way. However, there is still work to be done in the restoration and protection of our waters.

Findings underscore need to reduce use of “forever chemicals”

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

The MPCA uses the EQuIS database to store and manage monitoring data and associated laboratory results from streams, lakes, groundwater, ambient air, soil, sediment, and gas, collected through MPCA programs and partnerships.

Water quality trades that have been arranged in Minnesota illustrate many opportunities to enhance pollution reduction efforts while offering flexibility and cost savings to regulated municipalities and industries.

Answers to common questions about the Construction Stormwater Permit application

Training resources for feedlot officers in Minnesota.

The MPCA issued the most recent municipal stormwater general permit (MNR040000) in November 2020.

The StormReady designation recognizes the MPCA’s commitment to emergency management planning and continuity of operations during an emergency.

Tools to help small businesses determine if they need an air emissions permit and/or track compliance with their current air emissions permit.

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

Across the state, water softeners contribute significantly to chloride pollution. Here’s how to make sure your water softener isn’t sending excess salt into the environment

A gateway to common regulatory information that affects stationary engines.

Question and answer session with Addison Otto, a rule coordinator with the MPCA, about her work with the agency and how her hobby farm informs her work.

While hundreds of fish kills occur in Minnesota every year, mostly in lakes and ponds, fish kills on trout streams in southeast Minnesota are much less common.

Superfund requires specific investigation and cleanup processes, designates parties that are legally responsible for the cleanup, and provides funds for certain types of cleanups under Minnesota’s Environmental Response and Liability Act (MERLA).

Permits for wastewater treatment require monthly, quarterly, or annual reporting of discharge monitoring results

Answers to frequently asked questions about compliance and MPCA's enforcement of environmental rules in Minnesota.

The MPCA is committed to engaging broadly with the public and ensuring that residents affected by its decisions have a voice in its processes.