Rob Parrish, the park’s Division Chief of Planning, Environment, and Projects, said the Grand Canyon’s current water treatment plant is there, and chlorine is currently used to treat the water ...

Glen Canyon Dam managers ... call for cold water, the U.S. Bureau of Reclamation releases it through the dam’s bypass tunnels, mixing it with the hydropower plant’s warmer surface water ...

GRAND CANYON NATIONAL PARK, Ariz. – A chlorine gas leak at Grand Canyon National Park’s main water supply has forced park officials to close all inner canyon corridor trails. Officials said ...