The independence of the EPA study is questionable, since scoping work for some initial EPA research on the technique involved the University of Aberdeen which has close links with the oil and gas industry.

Source: 
The Irish Times (2011) "US study on impact to drinking water likely to inform drilling policy in Europe"
Person: 
Supporters of the No Fracking Ireland network in the northwest
Statement Date: 
Monday, 12 December 2011