We already knew that. Even the Denver Post editorial board in now on board. Fracking nutbag eco-kooks will be driven crazy by this. Not one incident of fracking fluids in ground water has ever been found.
It makes sense. It is technologically possible (easy in fact) to insure that fracking fluids do not get into the ground water. If you have spent millions of dollars drilling a gas well you probably don’t want to lose your investment, so you are going to make sure your fracking fluids do not infiltrate ground water. It’s elementary. It’s the profit motive helping to keep the environment clean and pure.