OEHHA is extending the public comment period by 15 days on the draft technical support document for the proposed Public Health Goal (PHG) for 1,4-dioxane in drinking water. The comment period will now close on November 25, 2025.

OEHHA’s Proposition 65 Implementation Team will host another presentation that will help businesses understand and comply with Proposition 65.

Effective December 8, 2025, the Office of Environmental Health Hazard Assessment added N-methyl-N-formylhydrazine to the Proposition 65 list as a carcinogen. This listing was done via the “State’s Qualified Experts” mechanism, based on the Carcinogen Identification Committee’s determination that this chemical was clearly shown to cause cancer.

OEHHA proposes to adopt Proposition 65 No Significant Risk Levels (NSRLs) for 1-bromopropane and diethanolamine by amending Title 27, California Code of Regulations, section 25705(b)(1).

OEHHA will convene a meeting of the Developmental and Reproductive Toxicant Identification Committee (DARTIC). At this meeting the DARTIC will consider the possible listing of bisphenol S (BPS) based on developmental toxicity. OEHHA is also opening a 45-day public comment period on the hazard identification document entitled “Evidence on the Developmental Toxicity of Bisphenol S."

OEHHA’s Proposition 65 Implementation Team will host a hybrid training that will help businesses understand and comply with Proposition 65.