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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.

Kate Knuth's career in addressing climate change, which took her to the Minnesota Capitol as a state legislator, has now led her to the MPCA as its new climate director.

Documents and forms related to the identification and management of hazardous waste in Minnesota.

Tools and materials for partners and stakeholders interested in minimizing the impact of chloride on Minnesota lakes, rivers, and groundwater.

State Superfund sites are listed on the Minnesota Permanent List of Priorities (PLP) primarily in order to access funding when responsible parties are unwilling or unable to conduct the necessary site investigation and cleanup.

Data shows that ice cover on Minnesota's lakes doesn't last as long as it used to. That means a shorter ice fishing season, yes, but it also has implications for the environment and Minnesota's fish and wildlife.

Air sensors are instruments that measure air quality conditions in near real time.

Image Aboveground storage tank (AST) requirements are found in Minnesota Rules, Chapter 7151. In general:new tanks and piping must be designed to…

Answers to questions frequently asked by municipalities about management of contaminated sediments in stormwater collection systems that they own and operate.

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

Minnesota has enacted laws to end avoidable uses of PFAS in Minnesota by 2032.

Status of total maximum daily load (TMDL) projects in Minnesota.

Details on sampling and monitoring requirements of your industrial stormwater permit.

The MPCA administers programs that are governed by 45 chapters of rules. The MPCA periodically conducts a “housekeeping” rulemaking to make minor corrections and clarifications to the rules or to repeal rules that have become obsolete.

Investments in electric vehicle charging stations around Minnesota.

A water quality variance is a temporary change in a state's water quality standard for a specific pollutant and its relevant criteria, allowing deviation from meeting a water quality-based effluent limit for a particular discharger.

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.