It's extremely hard to find unbiased reportage on fracking, but Wikipedia has a total of four* groundwater incidents, none of which seem to be slam-dunk conclus

It's extremely hard to find unbiased reportage on fracking, but Wikipedia has a total of four* groundwater incidents, none of which seem to be slam-dunk conclusive one way or the other. And even if they're all due to fracking, coal is a whole lot worse. Coal companies are failing left and right. *most of which appear to be peripheral to fracking proper; fracking possibly enabled the activity which led to an incident in most cases. It doesn't help that the film "Gasland" is chock fill of disinformation. It may be that remotely deployed water treatment at frack sites is the answer to both fracking effluent and injection wells. But this is one of those cases where when somebody does have accurate information, they're suspected of flackery because of who they are. We all knew ( or should have known ) that fracking was to be used to enable gas as a bridge between coal and alts. It's not going to be perfect, but it's doubtless an improvement.