This technical note describes the basic features of four methods of combined disposal: cesspool, septic tank with subsurface disposal system, septic tank with non-conventional disposal system and sewer with stabilisation ponds.
USAID (1982): Methods of Combined Washwater and Excreta Disposal. (= Water for the World Technical Note No. SAN.2.M. ). Washington: United States Agency for International Development URL [Accessed: 17.08.2010]