Ronnie Das DULUTH, Minn. (WLNS) – As the winter snow melts, the road salt and other chemicals used to treat icy roads are slowly making its way into lakes, rivers, and streams.

Purple Snow, F. Salt Fitzgerald, Flake Superior: MnDOT Reveals Finalists In 'Name A Snowplow' Contest February 18, 2021 / 12:04 PM CST / CBS Minnesota ...