Gas drilling companies such as Halliburton say the gas drilling technique known as hydraulic fracturing, or fracking, is safe, but opponents contend it pollutes groundwater with dangerous substances.
Now, new evidence has emerged possibly linking natural gas drilling to groundwater contamination. ProPublica journalist Abrahm Lustgarten reports federal officials in Wyoming have found that at least three water wells contain chemicals used in hydraulic fracturing.
See also: Charles Duhigg. “That Tap Water Is Legal but May Be Unhealthy”. 16 Dec 2009. New York Times.
