Roughly translated this means – there’s more fracking going on and more worries about water contamination. With clever chemistry you can sort out the methane of rotting vegetation from methane that has leaked out of drilling wells. The results indicated leaks from the wells were causing 8 cases of water pollution.
Hydrocarbon production from unconventional sources is growing rapidly, accompanied by concerns about drinking-water contamination and other environmental risks. Using noble gas and hydrocarbon tracers, we distinguish natural sources of methane from anthropogenic contamination and evaluate the mechanisms that cause elevated hydrocarbon concentrations in drinking water near natural-gas wells. We document fugitive gases in eight clusters of domestic water wells overlying the Marcellus and Barnett Shales, including declining water quality through time over the Barnett. Gas geochemistry data implicate leaks through annulus cement (four cases), production casings (three cases), and underground well failure (one case) rather than gas migration induced by hydraulic fracturing deep underground. Determining the mechanisms of contamination will improve the safety and economics of shale-gas extraction.
Count the number of times that the industry tell you that there has never been a case of water pollution from fracking. If you split hairs you could argue it was not caused by fracking but by well failure. I think that would not stand up to serious examination. Fracking has been shown to cause water pollution. Cement fails. The sky is not pink.
Although in the UK we tend not to use private wells for drinking water, there is a large number of boreholes used for farm animals. I suspect some of the excellent beers that are brewed in Yorkshire have their own water supply – now that would be serious.