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Safe methods of fire ash cleanup and the hazards associated with exposure.

The Office of Environmental Health Hazard Assessment (OEHHA) is adopting a new cancer inhalation Unit Risk Factor (IUR) for Isoprene.

The Office of Environmental Health Hazard Assessment (OEHHA) is announcing a proposed updated Public Health Goal (PHG) for N-nitrosodimethylamine (NDMA) in drinking water, the availability of a draft technical support document, a 45-day public comment period, and a hybrid public workshop on January 24, 2025.

The Office of Environmental Health Hazard Assessment (OEHHA) has amended Title 27, this regulatory action will make the Proposition 65 short-form warning more informative to consumers.

Under the authority of California Food and Agricultural Code Section 11454.1, the Office of Environmental Health Hazard Assessment (OEHHA) conducts scientific peer review of human health risk assessments prepared by the Department of Pesticide Regulation (DPR). 

The California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment has selected N-methyl-N-formylhydrazine for the Carcinogen Identification Committee review for possible listing under the Safe Drinking Water and Toxic Enforcement Act. This notice announces a data call-in to solicit information from the public relevant to the assessment of its carcinogenicity. N-Methyl-N-formylhydrazine was selected from chemicals prioritized by the CIC.

Fish Advisory for Modesto Reservoir in Stanislaus County.

OEHHA researches and presents information related to wildfires and its health effects including development of guidance and fact sheets, epidemiological research, and measurement of wildfire as a climate change indicator.

The Office of Environmental Health Hazard Assessment (OEHHA) has amended Title 27, California Code of Regulations 25607.2(b), to provide an additional safe harbor warning option for businesses that cause significant exposures to acrylamide in food products. 

OEHHA conducts research to analyze the benefits and impacts of California’s climate actions on community air quality and health.