For the first time, a federal report has verified that chemicals used in natural gas hydraulic fracturing, also known as "fracking," can, and do, cause groundwater contamination. The US Environmental Protection Agency (EPA) recently issued a 121-page draft report on the issue that contain evidence linking water contamination in Pavillion, Wyo., to fracking chemicals from nearby gas wells.
For years, the natural gas industry has denied that fracking contaminates groundwater, insisting that hydraulic pressure forces fracking fluids so far down into the ground that they cannot travel back up into water supplies. The industry also claims that layers in the earth's crust prevent chemicals from moving towards the surface by acting as a watertight barrier.
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