From Field to Faucet: Nitrate Risks in Karst Regions

Join the Cannon River Watershed Joint Powers Organization as they host the fourth session of the virtual learning series Land to Lake Lectures. Nitrate contamination is a growing concern in southeastern Minnesota, where karst geology allows water—and pollutants—to move quickly from the surface into groundwater. High nitrate levels threaten human health and water quality. Martin Larsen of the Olmsted Soil & Water Conservation District will explain how karst landscapes work, why they’re vulnerable to nitrate pollution, and what landowners can do to protect drinking water. Well water testing and conservation practices that reduce nitrate loss will also be discussed.

The free webinar will be held on Tuesday, January 13, 2026, at 12:00 pm over the lunch hour. Register for the webinar at https://z.umn.edu/NitrateRisks. For those who cannot attend live, the webinar will be video recorded and a link to watch it on demand will be sent to them.

The virtual…