WASHINGTON, Sept. 24 (UPI) -- A new study suggests fracking wastewater can endanger drinking water even after it has passed through treatment plants and been diluted.
Hydraulic fracturing, or fracking, is the process by which natural gas is extracted from shale deposits by blasting the underground rock with highly pressurized water mixed with chemicals. At the end of the process, drillers are left with tanks full of natural gas; but they're also left with highly radioactive wastewater laden with heavy metals and with halide salts like bromide, chloride and iodide.