Office of Environmental Health Hazard Assessment

The Office of Environmental Health Hazard Assessment (OEHHA) is the lead state agency for the assessment of health risks posed by environmental contaminants. OEHHA’s mission: To protect and enhance public health and the environment by scientific evaluation of risks posed by hazardous substances. OEHHA implements the Safe Drinking Water and Toxic Enforcement Act of 1986, commonly known as Proposition 65, and compiles the state’s list of substances that cause cancer or reproductive harm. The Office also develops health-protective exposure levels for contaminants in air, water, and soil as guidance for regulatory agencies and the public. These include public health goals for contaminants in drinking water and both cancer potency factors and non-cancer reference exposure levels for the Air Toxics Hot Spots Program. Other key OEHHA activities include: --Developing fish advisories for mercury and other contaminants in sport fish from water bodies throughout the state, and making recommendations regarding fishing safety and closures after marine oil spills. --Collaborating with other state agencies on the Biomonitoring California program, which measures levels of chemicals found in Californians’ bodies. --Developing a pioneering environmental health screening tool that can be used to put together a more comprehensive picture of the burdens California communities face from environmental pollutants and their vulnerability to health and economic impacts. --Identifying and analyzing indicators of climate change through the Environmental Protection Indicators for California program.The Office also provides scientific peer review of pesticide risk assessments; works with other state agencies to develop regulations to protect pesticide worker health and safety; trains physicians to recognize pesticide-related illnesses; and works with the Department of Food and Agriculture to provide health information on pesticide applications aimed at combating invasive species.