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Forms, guidance, and assistance to apply for an air quality permit.

Learn what steps you can take to reduce the pollution from small neighborhood sources.

Water quality trading is a market-based approach to the protection and restoration of surface waters, another tool to be used in conjunction with existing voluntary, regulatory, and financial assistance programs.

The MPCA uses the EQuIS database to store and manage monitoring data and associated laboratory results from streams, lakes, groundwater, ambient air, soil, sediment, and gas, collected through MPCA programs and partnerships.

Under the federal Clean Water Act, states must designate beneficial uses for all waters and develop water quality standards to protect each use.

State agencies, counties, municipalities, nonprofit organizations, and many others are engaged in protecting Minnesota lakes.

The MPCA provides additional guidance on air permitting and regulation requirements: New source review – Obtain a permit before beginning construction on new major-emitting industrial facilities…

The MPCA works with city and county governments, watershed districts, consultants, and others on monitoring, protecting, and restoring water quality. This is a repository of guidance and technical…

Wood-fired boiler exceeded carbon monoxide limits multiple times during 2021 and 2022 and several emissions testing reports were submitted up to 300 days late.

USG Interiors in Cloquet exceeded nitrogen oxide emissions during the summer of 2022.

Minnesotans cherish their access to clean water. Protecting and restoring water quality is therefore one of the MPCA's core areas of focus. Through intensive water-quality monitoring, we protect…