The EPA has repeatedly said fracking is safe.   In fact the only thing they could do to try to do to mollify the OBAMA administration and anti fracking activists was was try and tie unrelated activities in.   For example they said deliberately injecting produced water into an aquifer would contaminate the aquifer.   But no one injects produced water into the aquifer.    An example from the home would be:  adding anti freeze to the car radiator is safe.   Unless someone pours the anti freeze in someone’s bowl of cereal.   No one is going to do that.