Final Township Testing Nitrate Report: Le Sueur County 2018-2019

In 2018, private wells in Le Sueur County study area (two townships) were sampled for nitrate-N. Samples were collected from private wells using homeowner collection and mail-in methods. These initial samples were collected from 248 wells representing an average response rate of 45.8% of homeowners. Well log information was obtained when available and correlated with nitrate-N results. Initial well dataset results showed that across the study area, 4.4 percent of private wells sampled were at or above the health standard of 10 mg/L for nitrate-N. Base on the initial results, it is estimated that 151 residents could be consuming well water with nitrate-N at or over the Health Risk Limit.