E.P.A. Plans First Rules Ever on Perchlorate in Drinking Water “The Obama administration announced on Wednesday that it planned to regulate toxic substances in drinking water more strictly and would issue the first limits ever on perchlorate, a dangerous chemical found in rocket fuel that has seeped into groundwater in at least 400 locations.” PERCHLORATE: Occurrence Is Widespread but at Varying Levels; Federal Agencies Have Taken Some Actions to Respond […]