There are many studies to confirm that hydraulic fracturing is safe and our road to independence from the middle east, but this won't calm the voices of unreason because it is a political, not a scientific issue, much like global climate change.
The findings of the Duke researchers, based on 133 drinking water wells in Texas and Pennsylvania, corroborate claims by the energy industry that the fracturing process alone is not likely to imperil drinking water.
“We’re saying to the industry, the good news is we don’t think it’s actually from the hydraulic fracturing itself,” said Avner Vengosh, Duke professor of geochemistry and water quality.
“So far we can say pretty categorically that we have not seen escape of the gas from the shale formation into the overlying aquifers,” Vengosh said.
The Duke scientists say their findings apply only to the 113 wells in Pennsylvania and the 20 in Texas they have sampled, but they are likely to also be true for the thousands of other wells that have been horizontally drilled and hydraulically fracked all over the country.