Over the summer, the U.S. Environmental Protection Agency (EPA) published a final rule amending the Emergency Planning and Community Right-to-Know Act (EPCRA) hazardous chemical inventory reporting regulations, at 40 C.F.R. Part 370, which became effective on August 21, 2026. The rule conforms EPA’s regulations for EPCRA Sections 311 and 312 hazardous chemical inventory reporting to amendments that the Occupational Safety and Health Administration (OSHA) made to its Hazard Communication Standard (HazCom) in 2012 and 2024. Facilities must use the new hazard categories beginning January 1, 2028. EPA expects those changes to be reflected in 2027 EPCRA Section 312 annual reports due March 1, 2028.