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EPA Study of Fracking Finds 'No Widespread, Systemic' Pollution

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Hydraulic fracturing has contaminated some drinking water sources but the damage is not widespread, according to a landmark U.S. study of water pollution risks that has supporters of the drilling method declaring victory and foes saying it revealed reason for concern.

The draft analysis by the Environmental Protection Agency, released Thursday after three years of study, looked at possible ways fracking could contaminate drinking water, from spills of fracking fluids to wastewater disposal.