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The Metropolitan Council proposes adding a fourth wastewater incinerator which requires an amendment to the facility’s current air emissions permit.

Licensing and certification requirements for SSTS businesses and professionals.

Industrial Stormwater Steps to Compliance - Step 5: Gather application materials before applying, use the e-Service to apply or modify coverage

Environmental information and permits that affect businesses using boilers.

The MPCA has started a study intended to understand and document the variation in naturally occurring sulfate levels across the state.

Environmental information and resources for the aggregate industry.

As Minnesotans prepare for another summer of outdoor activities, MPCA meteorologists are forecasting a moderately active air quality season.

The kind of permit a facility needs depends on how much air pollution the facility could emit based on its equipment or processes.

Nitrogen management plans help operators of wastewater treatment facilities understand the inputs of nitrogen to their facilities and evaluate options that can reduce the amount of nitrogen discharged.

The St. Louis River Watershed covers 3,584 square miles at the head of the Great Lakes and represents the extreme headwaters of the St. Lawrence River.

We Are Water MN travels to Leech Lake, where Raining White works to protect and restore manoomin, or wild rice.

Some facilities may have air emissions low enough to qualify as "insignificant," and not be required to have an air permit.

When people think of sources of air pollution, they typically think about buildings with big smokestacks like power plants and factories. Only about a quarter of the air pollution in Minnesota comes…

The MPCA plans to amend water quality standards (Minn. Rules chapter 7050) affecting Class 2 beneficial uses, which protect surface waters for aquatic life and recreation.

Reusing and recycling materials from construction and demolition (C&D) can help address pressing disposal and contamination issues in Minnesota, and have significant economic and environmental benefits.

The chemical 1,4-dioxane, a likely carcinogen, was found in private wells near Bunker Lake Blvd. and Crosstown Blvd.

The MPCA developed the Wastewater Nitrogen Reduction and Implementation Strategy to decrease the wastewater sector’s nitrogen loads for the protection and restoration of bodies of water in and downstream of Minnesota.

Lake of the Woods is a big lake with a big problem caused by one of nature’s smallest organisms: algae. Scientists from the MPCA and the Science Museum are working together to understand why.

Financing is available for public entities in Minnesota to expand or improve stormwater infrastructure.

Ready-to-run meteorological data suitable for AERMOD.