We provide low-cost preventive health care, school nursing services, food service inspection, injury prevention services, funding to improve home health and safety, harm reduction services for people who use substances, health education and more. About the Health Department: We are the City of New Haven's public health agency made up of nurses, community health workers, health inspectors, epidemiologists, administrators and program leads protecting the health and well-being of our city's 138,000 residents.