19 Torphichen Street Edinburgh EH3 8HX Royal Environmental Health Institute of Scotland - REHISThe Royal Environment Health Institute of Scotland (REHIS) is a self-funding body promoting the advancement of Environmental Health in Scotland.Environmental Health is that area of public health activity which strives to improve, protect and maintain health and well being through action on the physical environment and life circumstances Courses leading to REHIS qualifications are available at https://www.rehis.com/