EPA Says Fracking May Cause Pollution

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The U.S. Environmental Protection Agency for the
first time has implicated a controversial method of improving the
productivity of oil and gas wells in causing groundwater pollution.

The practice is called hydraulic fracturing and involves pumping
pressurized water, sand and chemicals underground to open fissures
and improve the flow of oil or gas.

The EPA announced Thursday that it found compounds likely
associated with "fracking" chemicals in the groundwater beneath a
Wyoming community where residents say their well water reeks of

It could have a chilling effect in states trying to determine
how to regulate the controversial process.