West Virginia groundwater not affected by fracking, but surface water is

Three years of fracking has not contaminated groundwater in northwestern West Virginia, but accidental spills of wastewater from fracked wells may pose a threat to surface water, according to a new study. The scientists used a broad suite of geochemical and isotopic tracers to sample for contaminants in 112 water wells near shale gas sites, including 20 wells that were sampled both before and after fracking began.