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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 Minnesota Pollution Control Agency (MPCA) today released an environmental assessment worksheet (EAW) for a new facility proposed by Dem-Con that will process organic materials through anaerobic digesters at its environmental campus in Shakopee, Minnesota.

Through a certificate of need process, MPCA is offering existing landfills the opportunity to expand their existing capacity.

Each year, Minnesotans throw away more than 850,000 tons of recyclables, worth around $153 million. Here's how we're reducing those numbers in Greater Minnesota.

The MPCA added three sites to the state’s priority list of contaminated sites that need further investigation and cleanup under Minnesota’s Superfund law.

Minnesota’s greenhouse gas (GHG) emissions dropped by 14% between 2005 and 2022, according to a biennial report from the Minnesota Pollution Control Agency (MPCA) and Minnesota Department of Commerce

The 2025 MPCA annual report on Brownfields celebrated numerous major achievements cleaning up and rehabilitating polluted properties.

Recycling is good for Minnesota's economy. It supports more than 60,000 jobs in our state, paying almost $3.4 billion in wages and adds nearly $15.7 billion to Minnesota's economy.

Businesses like grocery, liquor, and convenience stores depend on refrigeration systems. Some of these systems, however, can prove expensive to operate and harmful to the environment.

This webpage will not only address potential noncompliance issues for air permittees, but it will help inspectors get all of the necessary information to facilities with one link.

Question and answer session with Lisa Weidemann, a community affairs specialist with the MPCA, about her work with the agency.

The MPCA works with industry, government, and residents to reduce and manage waste.

Vapor intrusion occurs when chemical vapors migrate from contaminated groundwater through the soil into the basements or foundations of buildings.

The National Crude Oil Spill Research Site near Bemidji was formed after a pipeline break released 10,000 barrels of crude oil in 1979.

Minnesota prohibits rechargeable batteries and products with non-removable rechargeable batteries from being disposed of in mixed municipal waste.

Nearly all feedlot owners are required to register with the state and update their registration information every four years, unless they have applied for a permit recently. This page includes information about how to register.

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.

The MPCA has begun work to implement a groundbreaking new law to remedy Minnesotans’ disproportionate exposure to pollutants.

The MPCA completed 78 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the second half of 2025, for a total of 146 for the year.

The MPCA enforces federal and state requirements for air quality permitting.