Cost Analysis of Anticipated Perchlorate Regulation Released

The American Water Works Association released a new cost-impact assessment for an anticipated perchlorate regulation that is currently pending at the U.S. EPA.This new assessment updates a 2009 review of cost by including additional treatment strategies and accounting for regulatory limits already in place in California and Massachusetts. In addition to ion exchange, this assessment considers costs associated with blending, source abandonment and development of new sources.In all, the estimated national compliance costs for a perchlorate maximum contaminant level ranging from 2 to 24 parts per billion is smaller than estimated compliance costs for other drinking water regulations.According to Kevin