Public CommentProposedPublic CommentProposed Regulation
OEHHA Seeks Public Input on Ethoprop Carcinogenicity for Prop 65
PROP65Office of Environmental Health Hazard Assessment (OEHHA)California, US
Announced
Dec 19, 2025
Description
OEHHA has issued a data call-in for ethoprop, seeking relevant scientific information on whether the chemical has been clearly shown to cause cancer. Ethoprop was added to the Proposition 65 list on February 27, 2001 based on EPA's classification as a 'likely' human carcinogen. In 2020, EPA revised this classification, prompting OEHHA to seek public input to determine if ethoprop should remain on the Prop 65 list. This affects companies with products containing ethoprop, including pesticide manufacturers and agricultural suppliers.
Sources
Key Findings
OEHHA Seeks Public Input on Ethoprop Carcinogenicity for Prop 65
RMATION ON THE CARCINOGENICITY OF ETHOPROP December 19, 2025 The California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment (OEHHA) is the lead agency for the implementation of Proposition 651. OEHHA is referring ethoprop to the Carcinogen Identification Committee (CIC), the state’s qualified experts for carcinogenicity determinations under Proposition 65, for review for possible de