On January 26, 2023, the U.S. Environmental Protection Agency (EPA) proposed a significant new use rule (SNUR) for those per- and polyfluoroalkyl substances (PFAS) that are currently on the Toxic Substances Control Act (TSCA) Inventory but that have not been actively manufactured (including imported) or processed in the United States since 2006 and are consequently designated as inactive on the TSCA Inventory. 88 Fed. Reg. 4937. Persons subject to the SNUR would be required to notify EPA at least 90 days before commencing any manufacture (including import) or processing of the chemical substance for a significant new use. Once EPA receives a notification, EPA must review and make an affirmative determination on the notification, and take such action as is required by any such determination before the manufacture (including import) or processing for the significant new use can commence. EPA states that such a review will assess whether the use may present unreasonable risk to health or the environment and ensure that EPA can prevent future unsafe environmental releases of the PFAS subject to this SNUR. Comments on the proposed SNUR are due March 27, 2023. For more information on the proposed SNUR and our Commentary, please read the full memorandum.

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