Bloomberg: The only finding by U.S. regulators of water contamination from fracking was thrown into doubt yesterday when the federal government halted its investigation and handed the probe over to the State of Wyoming. State officials will now investigate the integrity of gas wells owned by Encana Corp. (ECA) near 14 domestic water wells in Pavillion, Wyoming, while the Environmental Protection Agency stops further work on its draft report from 2011, which linked groundwater woes to hydraulic fracturing,...