This is one point of view. Contamination from fraking is rare or common...we really don't know because complaints are often settled out of court by the oil/gas companies and there's not extensive regulation of the industry.
I think that any true conservative would believe that nobody has a right to inject something--which might intrude into your water supply--into the ground without revealing what it is. There's also an obligation against negligence, which means sufficient study and protection should be required prior to threatening other peoples' health and property rights.
Strata where water is are likely to be segregated. Yes, contamination does happen, but not often, and if it does it is because —as in the Gulf—some bookkeeper was trying to cut corners. Better get used to relatively clean water. Human beings, really, have never known anything else.