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Pretreatment by commercial facilities and other non-domestic wastewater sources removes harmful pollutants before the wastewater is discharged to a municipal sewer system. The U.S. EPA has delegated MPCA the authority to approve pretreatment programs at the local level and oversee statewide pretreatment activities.
Public input is critical to the work that we do. We invite that input by soliciting comments on agency decisions, holding public informational meetings, and more.
Tools to help small businesses determine if they need an air emissions permit and/or track compliance with their current air emissions permit.
Minnesota’s policy is to eliminate or reduce the use, generation, and release of toxic pollutants and hazardous wastes at their source.
Businesses face challenges from climate change's impacts, but they can also take steps to reduce their contributions to climate change.
A gateway to common regulatory information that affects stationary engines.
New easy-to-access trainings help small businesses figure out if they are subject to MPCA regulations, and how to become more sustainable.
Permits for wastewater treatment require monthly, quarterly, or annual reporting of discharge monitoring results
Smith Foundry has ceased operations at its East Phillips facility after an investigation and settlement with the U.S. EPA that the MPCA supported.
First of a series of MPCA staff profiles. Kevin Stroom conducts research on streams and has published a report about Straight River.
The MPCA fined Caledonia feedlot owner Mike Ingvalson $10,000 for multiple violations related to improper manure application and discharges as well as an unpermitted building.
Chrome-plating facility in St. Louis Park is the alleged source of pollution in local lakes.
MPCA investigation found that Rainy Lake Oil failed to repair a pipe that was leaking diesel fuel underground for more than four months in 2024.
The MPCA studies Minnesota's solid waste composition and processes to inform policy recommendations, legislative proposals, education and outreach messages, and waste reduction efforts.
Details on major and minor modifications of a solid waste management facility permit.
Unauthorized releases of untreated wastewater in October 2024 and January and February 2025, as well as failure to notify the Minnesota Duty Officer in a timely manner.
Guidance on NPDES/SDS construction stormwater requirements
The MPCA’s Smart Salting program helps cut down on chloride pollution by training snowplow drivers and municipalities to use less salt on the roadways.
Minnesota industrial facilities that are required to submit Form R reports for Toxic Release Inventory (TRI) chemicals under the state and federal Emergency Planning and Community Right-to-Know Act (…
Information for cannabis growers and processors to understand environmental regulations and permits that may apply to their businesses.