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In 2014 it was reported that while Range’s consultants concluded methane levels in Parker County were safe (4.2 milligrams per liter of methane in mid-2012, and 20 milligrams in November 2012), tests by Duke University one month later in December 2012 found potentially explosive levels (54.7 milligrams). Homeowners want the EPA to re-open the case, saying the agency relied on tests conducted by the company itself without adequate oversight.<ref>Mark Drajem, [http://www.bloomberg.com/news/2014-01-10/epa-s-reliance-on-driller-data-for-water-irks-homeowners.html "Duke Fracking Tests Reveal Dangers Driller’s Data Missed,"] Bloomberg, Jan 9, 2014.</ref>
In 2016 Stanford University scientist, Rob Jackson, linked the groundwater contamination to poorly constructed wells. Jackson used the Parker County case as an example. He told PHYS ORG Phys.org, "At that site, the company cemented very near the surface and deep underground, but they put no cement for 4,000 feet in between," he explained. "The gap allowed gases to move up and down freely like a chimney and contaminate the drinking-water supply."<ref>[http://phys.org/news/2016-02-oil-natural-gas-affect.html "Does living near an oil or natural gas well affect your drinking water?,"] Phys.org, February 14, 2016.</ref>
===Canadian Company Tests Waterless Fracking in Texas===
