GRAND JUNCTION, Colo. - Colorado regulators say they're monitoring a federal study of contaminated drinking water around oil and gas wells in Wyoming.
The Environmental Protection Agency found traces of toxins in water wells. The agency is doing more tests to determine the source and amounts of the contaminants, and to see whether they pose a health hazard.
Some residents blame the contamination on hydraulic fracturing, or "fracking." The process injects pressurized water, sand and chemicals into the ground to open channels so oil and gas can be recovered more easily.
Dave Neslin, director of the Colorado Oil and Gas Conservation Commission, said last week his agency is following the study.
He cautions the issue is complicated and any connection to fracking isn't clear.