Source : ProPublica

This is old news, from August of last year; a past entry from the mounting body of evidence suggesting a connection between hydraulic fracture and the contamination of groundwater.  Excerpt:

Federal environment officials investigating drinking water contamination [1]  near the ranching town of Pavillion, Wyo., have found that at least three water wells contain a chemical used in the natural gas drilling process of hydraulic fracturing [2]. Scientists also found traces of other contaminants, including oil, gas or metals, in 11 of 39 wells tested there since March.

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Excerpt from the full article:

In July, a hydrologist dropped a plastic sampling pipe 300 feet down a water well in rural Sublette County, Wyo., and pulled up a load of brown oily water with a foul smell. Tests showed it contained benzene, a chemical believed to cause aplastic anemia and leukemia, in a concentration 1,500 times the level safe for people.

Thanks to Mark Blumenstein of Friends of the Lower Greenbrier River for sending me this.