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Planned amendments to Minn. Rules ch. 7050 affect the Class 1 beneficial use, which protects waters (both surface and groundwater) used as a source for domestic consumption.
Forms, guidance, and assistance to apply for an air quality permit.
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.…
This year’s forum will focus on ways to reduce nitrogen in Minnesota’s water, and ways that agricultural and urban partners are working together to improve water quality.
Standard operating procedures (SOPs) reflect how agency staff and contracted partners complete agency-funded field activities.
This year’s theme is Advancing Nutrient Trading with Sustainable Farming and Conservation Practices.
The MPCA has released the draft 2025 Minnesota Nutrient Reduction Strategy for public review and comment.
Nearly all feedlot owners are required to register with the state and update their registration information every four years, unless they have applied for a permit recently. This page includes information about how to register.
MPCA rules govern how septic systems are designed, installed, and managed.
MPCA's compliance and enforcement program tracks how well wastewater treatment facilities are complying with their permits and takes enforcement actions when necessary.
A 2008 law requires the MPCA to analyze and consider “cumulative levels and effects of past and current pollution” for air permits in a specific part of south Minneapolis.
Testing found elevated levels of tetrachloroethylene/perchloroethylene (PCE or Perc) in soil vapors around the Dison’s Cleaners and Launderers site in Rochester.
Elevated levels of trichloroethylene (TCE) are present in soil, soil vapor, and groundwater around this site in New Hope.
Image MPCA staff provide technical assistance to businesses seeking to improve their environmental performance and prevent pollution.Small business…
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.
Elevated levels of tetrachloroethylene and trichloroethylene have been found in soil vapor around this site in St. Paul.
MPCA is planning new rules governing how the MPCA determines currently unavoidable uses of per- and polyfluoroalkyl substances (PFAS) in products.
Under the federal Clean Water Act, states must designate beneficial uses for all waters and develop water quality standards to protect each use.
Groundwater is not a static thing, but moves around in the layers of rock and soil beneath our feet. How does this affect the work to treat contaminated groundwater and protect drinking water?
The health of Minnesota's large rivers is a reflection of how well we are protecting overall water quality.