An Environmental Sanitation Project has been undertaken jointly by the Lebanese government's Council for Development and Reconstruction (CDI), the Lebanese Ministry of Health (MOH) and the American University of Beirut (AUB) with financial assistance from U.S. AID for building two (2) wastewater treatment plants for small villages (1000-5000 population) in the vicinity of Beirut. These treatment plants would be used for refining design criteria for Lebanon conditions, developing operational procedures, providing testing facilities for AUB students, and instructing plant operation personnel from other villages where similar facilities would be built in the future. They would serve as models of treatment plants for other small villages and towns in Lebanon. The treatment plants are to be designed so as to produce high-quality secondary effluent (30/30 BOD and suspended solids), be simple to operate and maintain, have a minimum of mechanical equipment, and be near Beirut.