The South Fork of the Snake River runs for more than 60 miles across southeastern Idaho. | Courtesy of the Bureau of Land Management REXBURG — The Department of Environmental Quality has filed two lawsuits, one against the City of Burley and one against the City of Rexburg, accusing them of funneling millions of gallons of untreated wastewater into the Teton and Snake Rivers. In February, the Idaho Conservation League (ICL) and the Snake River W…