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MPCA rules govern the collection, transportation, storage, processing, and land application of animal manure and other livestock operation wastes.

Septic system owners are responsible for system maintenance. Properly maintaining a septic system will extend its life.

Keep It Clean focuses on the growing problem of garbage and human waste left on the ice by anglers and other visitors during ice fishing season.

Anglers can choose lead-free materials when shopping for fishing tackle. Popular options include tungsten, steel, tin, bismuth/tin, and glass.

To obtain coverage under this permit, the owner(s) must document compliance with the criteria for coverage under this general permit, prior to disposal of the uncontaminated concrete.

Residents' guide to stormwater permitting.

Complying with the MS4 general permit

Industrial Stormwater Steps to Compliance - Step 2: Consider certifying for No Exposure

Spring is the time for awakening gardens from their slumber and cleaning up the yard. It’s also a good time to start thinking about a backyard compost pile. Here’s how to build one that’ll enhance soil health and that your neighbors won’t mind.

Medicines flushed down the drain can contaminate water, which can hurt fish and other aquatic wildlife, and end up in our drinking water.

Minnesotans are encouraged to share feedback through Nov. 9, 2025

One of the most basic forms of air pollution, haze reduces visibility in many cities and scenic areas within the United States. Haze-causing pollutants come from a variety of sources, both natural and man-made, including motor vehicles, electricity generation, industrial facilities, agriculture, and wildfires.

What to consider when cold weather has you looking into home weatherization projects

Details on major and minor modifications of a solid waste management facility permit.

Apply for funds to help assess sites with known or suspected contamination and develop remediation plans.

Phosphorus management plans help wastewater treatment facility operators and managers evaluate pollution prevention and and management options that can reduce the amount of phosphorus discharged to Minnesota waters.

Public entities In Minnesota, most sustainable purchasing requirements are implemented at the local government level. However, there are some state requirements for public entities: Minnesota state…

MPCA completed 100 enforcement cases for water quality, air quality, waste, stormwater, and wastewater violations in the first half of 2024

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

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.