Pennsylvania's Department of Environmental Protection has acknowledged that methane from a fracking operation has contaminated groundwater and wellwater in Leroy Township, Pa.
At the home of Mike and Nancy Leighton, water began bubbling over a water well that typically had over 80 feet of head space at the top. Nearby, a neighbor's well went dry, then when water returned it was black.
The Pennsylvania DEP says methane must have escaped from a nearby fracked well, operated by Chesapeake Energy.
See the story at NPR.