The Department had been established in 1948 together with the first phase of the Faculty of Public Health under the University of Medicine (Mahidol University at present).
Department of Sanitary Engineering Is the main partner of the Center for Excellence in Environmental Health, Toxicology and Chemical Management. It also has a strong collaborations with various government, university and private agencies. At present, there are 11 academic and 7 supporting faculties. The department offers 2 programs under the Faculty of Graduate Study: the master of science program in environmental technology and the doctor of philosophy program in environmental technology (international program). The department has high reputation in providing knowledges and researches related to environmental pollution control and management.