Wyoming – The tiny town of Pavillion, Wyoming has become one site of a growing environmental debate. The Environmental Protection Agency this month found that eleven water wells in Pavillion tested positive for contaminants, including methane. Those wells are concentrated in an area thick with EnCana gas wells, and some residents think drilling is to blame for the contamination. But it's another matter to prove that oil and gas is responsible. Wyoming Public Radio's Addie Goss reports.