Office of Environmental Health Hazard Assessment
Office of Governor Edmund G. Brown Jr.

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The Executive Office provides the direction and leadership necessary to plan, develop and administer programs and activities in OEHHA. Other functions provided by the executive office include legal support to various programs, legislative analysis and liaison, communication and public information, and administrative functions relating to OEHHA’s Proposition 65 activities.


The Administrative Services Division carries out the various administrative tasks necessary to support the Office, including contracts and business services, human resources, fiscal services, and information technology.

Air, Community, and Environmental Research Branch (ACERB)

The Air, Community, and Environmental Research Branch (ACERB) has wide-ranging responsibilities that include assessing the health effects of criteria air pollutants and toxic air contaminants; conducting epidemiological studies of the health effects from air pollution; conducting innovative research  of public-health issues relating to climate change and identifying the impacts of climate change in California;  identifying California communities with the highest burdens and vulnerabilities to pollution;  and assisting state and local agencies in the review of hazards and ecological risks posed by contaminated sites.
Specific Program Activities within ACERB

Air Toxics “Hot Spots” Program

Children’s Environmental Health Protection

Climate Change

Criteria Air Pollutants

Contaminated Site Risk Assessment

Environmental Justice

Environmental Research

Toxic Air Contaminant Program


The Reproductive and Cancer Hazard Assessment Branch (RCHAB) has responsibilities that include administering the scientific aspects of the Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65); operating the California Environmental Contaminant Biomonitoring Program (Biomonitoring California) in collaboration with the California Department of Public Health and the Department of Toxic Substances Control; and conducting exposure and health risk analyses for reproductive and developmental toxicants and carcinogens.

Specific program activities within RCHAB
Proposition 65 Scientific Activities

Biomonitoring Program

Safer Alternatives Assessment Program

Pesticide and Environmental Toxicology Branch (PETB)

The Pesticide and Environmental Toxicology Branch (PETB) is composed of five sections performing various activities pertaining to different aspects of pesticide toxicity and epidemiology, drinking water contaminants, contaminants in fish and shellfish, and the potential health effects of synthetic turf.
Specific Program Activities within PETB
 Pesticide Risk Assessment

Pesticide Epidemiology Program

 Public Health Goal Program

 Fish, Ecotoxicology, and Ambient Water Program

Special Investigations

Flex Your Power Website
Energy efficiency and conservation information. Find incentives/rebates, technical assistance, retailers, product guides, case studies and more.
AMBER ALERT: Save a Child Amber Alert logo
AMBER ALERT empowers law enforcement, the media and the public to combat abduction by sending out immediate information.
Get Ready for Earthquakes with a drill on October 15th