When Scott Pruitt takes the reins of the Environmental Protection Agency, we can expect him to dismantle federal environmental protections. Among the protections that he would like to roll back is the recent rule defining the "waters of the United States" under the Clean Water Act. Repealing this rule would cut the heart out of the Clean Water Act, effectively handing our waters back to big polluters. This should be resisted.
The Grand Canyon reach of the Colorado River meanders through one of the most remote ecosystems in the United States. It would be easy to assume steep canyon walls and uninhabited shores resulted in pristine waters. But research by Cary Institute’s Dr. Emma Rosi-Marshall and colleagues has found that this isolated part of the Colorado harbors toxic levels of mercury and selenium.