EPA Expands Draft 1,4-Dioxane Evaluation, Sparking Preemption Battle

摘要

EPA has expanded its draft evaluation of 1,4-dioxane, finding the presence of the chemical as a byproduct in eight consumer products poses no unreasonable risks that must be regulated under TSCA, a win for consumer product manufacturers who had sought the expanded evaluation to preempt pending state rules. The agency also found that 1,4-dioxane in surface waters used for recreation poses no risk, an evaluation that was recommended by the agency's science advisors, though EPA rejected similar calls from its advisers and environmentalists to even evaluate risks from 1,4-dioxane in drinking water.