"The Trump administration has hit the pause button on an Obama-era regulation aimed at limiting the dumping of toxic metals such as arsenic and mercury by the nation’s power plants into public waterways.
'I have decided that it is appropriate and in the public interest to reconsider the rule,' Scott Pruitt, head of the Environmental Protection Agency, wrote this week in a letter to groups that had petitioned the agency to revisit the rule, which was finalized in 2015.
Beginning in 2018, power plants would have had to begin showing that they were using the most up-to-date technology to remove heavy metals — including lead, arsenic, mercury and other pollutants — from their wastewater. Pruitt wrote that the EPA plans to postpone compliance deadlines for the regulation, which is also being challenged in a federal court. On Thursday, the EPA said the rule would cost the industry hundreds of millions of dollars a year to comply with."