The Office of Environmental Health Hazard Assessment, commonly referred to as OEHHA (pronounced oh-EEE-ha), is a specialized department within the cabinet-level California Environmental Protection Agency (CalEPA) with responsibility for evaluating health risks from environmental chemical contaminants. * Carcinogens * Reproductive toxins * Air pollutants * Pesticides * Chemical contaminants in food and water * Chemical exposures in the workplace * Climate change in California