Nutrient Management

Nitrogen Fertilizer Restrictions Began September 1

Where does the restriction apply?


The application of nitrogen fertilizer in the fall and on frozen soil will be restricted in areas vulnerable to groundwater contamination. This will also apply to Drinking Water Supply Management Areas (DWSMAs) with elevated nitrate levels. Vulnerable groundwater areas include coarse textured soils, karst geology, and shallow bedrock.

groundwater protection area map.jpg

Further Information

Information on a prerecorded presentation and a live webinar through WebEx on August 12, 2020 from 10:00 to 11:00 is available at: https://www.mda.state.mn.us/groundwater-protection-rule-webinar or visit https://www.mda.state.mn.us/nfr for more information pertaining to the Ground Water Protection Rule.