Bottled water is no better or worse, in most cases than tap water. According to the FDA, in at least 40% of all cases, it is tap water. Of course, the plasticizer used in most of the plastic bottles is a carcinogen but we don't worry about that. Convenience is everything.

Every one of the major bottled water producers uses more than one bottling plant. Poland Springs is no longer only from Poland, Maine. Coca Cola set up a bottling plant in a desert [in Arizona, I believe] and was going to use a very slow recharging aquifer as its source. Fortunately, public protest caused them to abandon the plant.
That one didn't make the late night news in your area, did it?

Q, you are correct. The continental divide would split the communication, even if nothing else did. The point, however, is valid: If you frack the Marcellus shale, don't be surprised if contaminants show up a very long way from the injury.