A 1987 U.S. Environmental Protection Agency finding, which the agency has ignored for years, concluded that hydraulic fracturing of a deep natural gas well in Jackson County, W.Va., contaminated groundwater and private wells.
Although the gas drilling industry has repeatedly claimed that such "fracking" operations in Pennsylvania's Marcellus Shale natural gas fields pose no threat to rural underground aquifers, groundwater and drinking water wells, EPA investigators concluded a gas well drilled and fracked by the Kaiser Gas Co. in 1982 did contaminate groundwater.