Floodwaters may also be contaminated with toxic waste washed from tailings
left by gold and silver mining, says Linda Figueroa, a wastewater engineer at the Colorado School of Mines in Golden.
Left: Demese Black, left, helps Michael Arceneaux empty his boots of floodwaters in the living room of his home Thursday, Aug. 31, 2017, which was hit by a tornado during Hurricane Harvey in Sienna Plantat
Left: Demese Black,
left, helps Michael Arceneaux empty his boots of floodwaters in the living room of his home Thursday, Aug. 31, 2017, which was hit by a tornado during Hurricane Harvey in Sienna Plantat
left, helps Michael Arceneaux empty his boots of
floodwaters in the living room of his home Thursday, Aug. 31, 2017, which was hit
by a tornado during Hurricane Harvey in Sienna Plantation.