EPA Extends Ethylene Oxide Rule Comment Period to May 15

The Environmental Protection Agency on May 1, 2026, extended the public comment period for a proposed rule titled 'National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review Reconsideration,' per the Federal Register notice signed by Donald Trump.

The rule affects approximately 86 commercial sterilization facilities across the United States that use ethylene oxide, a gas that sterilizes about 50 percent of all medical devices, including surgical kits and catheters, according to standard EPA data on the sector. These facilities serve hospitals, clinics, and manufacturers, impacting the supply chain for 20 billion sterilized items annually.

The extension changes the comment deadline from May 1, 2026, to May 15, 2026. The original proposed rule appeared in the Federal Register on March 17, 2026, at 91 FR 12700, with an initial 45-day comment window. No other aspects of the proposal, such as emission limits or compliance requirements, alter under this action.

The two-week extension allows facility operators, environmental groups, and public health organizations more time to analyze and respond to the proposed standards, which could influence final emission controls. It delays the EPA's aggregation of comments, potentially postponing the agency's response to feedback and the issuance of a final rule by several weeks.

Regulated facilities must now adjust their preparation timelines for any forthcoming compliance obligations tied to the rule's progression.

The proposal reconsiders standards first established in 1994 and updated in 2003 under previous administrations, following a required residual risk and technology review process outlined in the Clean Air Act.