EPA Begins Public Comment Period On Updated Draft Risk Calculation Memorandum For Formaldehyde

On December 3, 2025, the U.S. Environmental Protection Agency (EPA) announced the availability of and solicited public comment on an Updated Draft Risk Calculation Memorandum (Draft Memorandum) to inform a revised draft risk evaluation for formaldehyde under the Toxic Substances Control Act (TSCA). 90 Fed. Reg. 55726. EPA states that after further consideration of comments raised during the scientific peer review process, it is reconsidering the use of certain hazard values in the formaldehyde risk evaluation. The Federal Register notice, Draft Memorandum, and materials included in the docket provide the science and science policy basis for determining how the revised draft inhalation point of departure (POD) impacts the corresponding draft margin of exposure (MOE) estimates and the risk determination. EPA notes that although it is also providing a revised draft occupational exposure value, it "is not changing its position that formaldehyde poses unreasonable risk of