Oil and gas industry leaders are pushing back today against an EPA draft report that linked hydraulic fracturing with water contamination in Wyoming by insisting that what happened in that state is light years away from drilling being done in Texas, New York and other parts of the country.

In its draft report yesterday, the Environmental Protection Agency said it had discovered synthetic chemicals associated with gas production and hydraulic fracturing fluids inside deep water wells in Pavillion, Wyo.

It was the first time a federal agency had linked water contamination with the hydraulic fracturing process, which involves blasting mixtures of water, sand and chemicals deep underground to break up dense shale rock and unlock trapped oil and natural gas.