This view is echoed by Robert Jackson, professor of environmental sciences at Duke University in the US, who has published research on ground water contamination through hydraulic fracturing.
There have been some minor instances of hydraulic fracturing fluids reaching non-drinking groundwater, but these occurred due to factors such as above-ground pipe leaks that have nothing to do with the hydraulic fracturing process itself.
Fracturing proponents have struggled to gain the high ground in the debate on water quality, even as they debunked the myths time and again with facts and data.