The Minnesota Pollution Control Agency (MPCA) today took another step forward in addressing nitrate pollution statewide by issuing updated water permits for about 1,000 large feedlot operations. These permits take effect when the current ones expire.
Finalizing the new general federal and state permits is the culmination of a consultative process between the MPCA and other state agencies, farmers, agriculture and environmental advocates, Tribal Nations, and concerned Minnesotans. The MPCA held an extended, 71-day public comment period from June 24 to Sept. 3, 2024. There were 183 comments received during the public comment period, and all were considered when finalizing the permits.
New NPDES and SDS permits
Review the final NPDES and SDS feedlot general permits as well as agency responses to public comments.
These permits help protect Minnesota’s water resources by minimizing the risk of surface and groundwater contamination from livestock production areas and manure land application sites. They will have the biggest positive environmental effects in regions of Minnesota where nitrate can move more easily through the soil and into groundwater.
MPCA and Minnesota Department of Agriculture monitoring shows elevated levels of nitrate in Minnesota groundwater, lakes, rivers, and streams in some areas of the state. Manure contains nitrogen, a valuable fertilizer. When it’s applied to land, some nitrogen naturally converts to nitrate, which is susceptible to leaching. Nitrate is toxic to fish and other aquatic life. In drinking water, nitrate can be harmful to human health.
In conjunction with the updated permits, the MPCA is launching a new online nutrient management tool that will help feedlot operators plan manure and fertilizer applications. People who apply for the new permits will be required to use the tool.