In this Tyler Tjomsland SR photo, Bob Witherow, a technician with the Idaho Department of Environmental Quality, pulls a Kemmerer water sampler from the waters of Lake Coeur d'Alene on Feb. 12. Lake Coeur d'Alene is more polluted than the Animas River, according to a High Country News report. When the Environmental Protection Agency unleashed a plume of pollution into Colorado's Animas River earlier this month, it garnered huge national attention.