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Heavy metals are an ill-defined group of inorganic chemical hazards that include lead, chromium, arsenic, and cadmium. They may leach into soil and water from industrial sites, mines or…
Best practices for SSTS installations drafted by St. Louis County, Minn., in 2008 based on the experiences of SSTS installers and inspectors.
Each year, Minnesotans throw away more than 850,000 tons of recyclables, worth around $153 million. Here's how we're reducing those numbers in Greater Minnesota.
State experts anticipate an active summer for air quality alerts with recurring ozone and wildfire smoke events
Application forms and instructions for applying for wastewater permits.
Permit applications must include detailed emissions calculations to help determine which permit type or permit amendment is needed.
Water scientists from the MPCA published four watershed reports in 2025, updating the data we need to keep Minnesota’s waters clean and protected.
The MPCA recognized 236 wastewater facilities for outstanding operations in 2024.
A waste is any material that can no longer be used for its original intended purpose. The type of waste generated can include recyclables, solid waste, and hazardous wastes, which may be subject to specific management and disposal requirements.
Information for cannabis growers and processors to understand environmental regulations and permits that may apply to their businesses.
Learn what you can do to protect yourself and your community from environmental problems caused by flooding.
MPCA's Closed Landfill Program is a voluntary program established in 1994 to properly close, monitor, and maintain Minnesota's closed municipal sanitary landfills.
Financial assistance for SSTS work is targeted to units of local government.
Regulatory certainty is an incentive for municipalities that will employ biological nutrient removal in their wastewater treatment technology, and that are willing to accept a nitrogen limits in…
Nitrogen, like phosphorus, is a nutrient that pollutes in state waters, and its concentration in many rivers has been increasing from historic natural levels over time due to human influences.…
Septic tank installation fees and system abandonment
Frequently asked questions about SSTS certification and licensing.
The Minnesota Pollution Control Agency (MPCA)’s draft wastewater permit for the 3M facility at Cottage Grove adds new water quality protections for the Mississippi River and improves accountability through monitoring and reporting requirements. The draft permit is one of the most rigorous in state history and mandates the removal of certain per- and polyfluoroalkyl substances (PFAS) to levels below detection.
Minnesota industrial stormwater permittees in certain industries to monitor for PFAS in their stormwater runoff or snow.
Smart Salting is a suite of techniques that minimize the environmental and economic impacts of chloride while still meeting public needs.