A leaking holding tank spilled an estimated 20,000 gallons of liquid manure in 2019 on a Stearns County dairy farm. Manure and commercial fertilizer often pollute Minnesota's drinking water.

A quarter-century ago, Winona County, in the heart of southeastern Minnesota dairy ... farm runoff, in sensitive geographies. In 2023, the EPA estimated nearly 10,000 people in the region had ...