Bright Angel, South Kaibab and North Kaibab trails are all closed. The gas leak is at Roaring Springs, which is the water source for all canyon facilities.

Bright Angel, South Kaibab and North Kaibab trails were all closed. The gas leak was at Roaring Springs, which is the water source for all canyon facilities.

Water from Roaring Springs is treated with chlorine to disinfect and to control microbes within it, officials noted.