Hydraulic fracturing, or fracking, has long been tied to environmental risks such as spills. The frequency of spills, however, has long been murky since states do not release standardized data.
Estimates from the U.S. Environment Protection Agency (EPA) vary wildly.
“The number of spills nationally could range from approximately 100 to 3,700 spills annually, assuming 25,000 to 30,000 new wells are fractured per year,” the agency said in a June 2015 report. Also, the EPA reported only 457 spills related to fracking in 11 states between 2006 and 2012.
But now, a new study suggests that fracking-related spills occur at a much higher rate.
The analysis, published Feb. 21 in the journal Environmental Science & Technology, revealed 6,648 spills in four states alone—Colorado, New Mexico, North Dakota and Pennsylvania—in 10 years.
By: Lorraine Chow