Conducted properly, hydraulic fracturing (or “fracking”) has little possibility of contaminating water supplies. Properly constructed wells prevent drilling fluids, hydraulic fracturing fluids, deep saline formation waters, or oil and gas from entering aquifers. Carefully constructed and operated well sites have the ability to contain potential spills and minimize runoff into surface waters.
As with any industrial process, accidents can occur. In particular, improperly constructed wells can allow fluids to migrate up from deep formations and into shallow aquifers, and improperly contained surface spills can potentially contaminate surface water.