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Evaluation of seafood safety consumption following oil spills

Fact Sheet describing OEHHA activities involving oil spills and seafood

If, when, and how a fisheries closure occurs following an oil spill notification.

Restrictions on 1,3-Dichloropropene (1,3-D) to protect occupational bystanders. New regulations, developed jointly and mutually by the California Department of Pesticide Regulation and the Office of Environmental Health Hazard Assessment, are effective January 1, 2026 to reduce the risk of 1,3-D exposure to occupational bystanders.

OEHHA may send letters to interested parties that assist in understanding Proposition 65 statutes and regulations, and their application.

OEHHA is referring ethoprop to the Carcinogen Identification Committee, the state’s qualified experts for carcinogenicity determinations under Proposition 65, for review for possible delisting.

Fish advisory for Bass Lake in Madera County

Fish consumption advisory for Bass Lake in Madera County.

The mission of the individual sections within OEHHA and reports that pertain to their mission

Effective December 8, 2025, the Office of Environmental Health Hazard Assessment has added the developmental toxicity endpoint to the reproductive toxicity listing of bisphenol S (BPS) under Proposition 65. This addition was done via the “State’s Qualified Experts” listing mechanism, based on the Developmental and Reproductive Toxicant Identification Committee’s determination that this chemical was clearly shown to cause developmental toxicity.