According to publicly available data from the Colorado Oil and Gas Conservation Commission , there were 615 spills in 2015, meaning that nearly two spills occurred every day in the state.
“This is another stark reminder of the risks associated with oil and gas development,” said Greg Zimmerman, deputy director at the Center for Western Priorities. “Even in the face of falling oil prices and virtually no interest in new drilling, companies still managed to spill oil and other chemicals onto Colorado’s land and water nearly two times every day last year.”
The 2015 Toxic Release Tracker finds that produced water was the most common type of spill—companies reported 271 releases of produced water—followed by oil spills, which occurred at least 110 times in 2015. Of those, 51 spills released at least 5 barrels, or 210 gallons, of oil. During 2015, 61 spills occurred within the 500-foot setback of a building.