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The MPCA library provides access to the agency's curated collection of environmental information for agency employees, external professionals, and the public.
The MPCA has begun work to implement a groundbreaking new law to remedy Minnesotans’ disproportionate exposure to pollutants.
Climate adaptation is about developing strategies to help human and natural systems become more resilient to the effects of climate change.
State experts anticipate an active summer for air quality alerts with recurring ozone and wildfire smoke events
States are responsible for developing a Regional Haze State Implementation Plan (SIP) that addresses regional haze in each Class I area located within the state and in each Class I area located…
Biosolids that will be applied to land must meet strict regulations and quality standards.
The MPCA is working with the city of Minneapolis to identify sources of air pollution in North Minneapolis and find strategies to reduce emissions.
MPCA investigation found stormwater permit violations that occurred during a construction project in 2025, with sediment-laden stormwater entering a stream at a construction site in Chaska.
Study funded by the $850 million settlement that Minnesota reached with 3M in 2018 focused on the area served by the Valley Branch Watershed District’s Project 1007 rainwater conveyance system in the East Metro.
Guidance for MPCA contractor and subcontractors
The MPCA's chloride reduction program assists communities and organizations across Minnesota in identifying sources of chloride.
The MPCA offers environmental audits to help businesses and organizations examine how well they are complying with environmental regulations, and correct any problems that are identified.
Chloride is a problem for wastewater facilities and stormwater permittees.
Environmental information and permits that affect businesses using stationary engines or generators.
MPCA permits are required to both build and operate landfills in Minnesota.
MPCA evaluates water quality by measuring and monitoring the health of fish, macroinvertebrates, and plants.
The MPCA fined Heron Lake BioEnergy $18,174 for failing to properly maintain safety controls and inspect storage tanks on its property.
Guidance on NPDES/SDS construction stormwater requirements
Environmental information and permits that affect hot mix asphalt plants.
Stormwater runoff is a leading source of water pollution, and the state general permit is designed to reduce the amount of sediment and other pollutants entering state waters.