nitrates
Water quality group gives Big Sioux River an ‘F’ grade over E. coli contamination
A water conservation non-profit gives the Big Sioux River an ‘F’ grade over E. coli levels beyond what’s considered safe by the state Department of Agriculture and Natural Resources (DANR). Nitrate levels in the river, fueled in part by agricultural fertilizer runoff, are also rising. The report card was presented Monday evening at Augustana University […]