reality is, you don't drink drano for a reason, but you have drano in your house. if you want to define what's nasty, go ahead. >> there are nasty chemicals that affect your liver, that cause cancer, that shut down your system. >> yeah, you don't want to drink frack fluid. if you take away nothing from this interview-- >> no, but isn't there a possibility that you go down, and something seeps, and it gets into the water supply, gets into the aquifer? >> ah, that's the fear, isn't it? >> well, yes, it's-- of course, it's the fear. >> okay, but freshwater aquifers are only from the surface to about 1,000 feet below the surface of the earth, okay? we are fracking wells at depths of 7,000, 8,000, 10,000, 12,000 feet, okay? so there is almost two miles of rock between where we are active and where freshwater is drawn from. >> in 2010, the environmental protection agency began studying the effects of fracking on drinking water. is the problem fracking per se or human error? consider what happened in this appalachian town in pennsylvania. in the shale gas gold rush, dimoc