* The material on this page was adapted from: Tilley, E. et al. (2008). Compendium of Sanitation Systems and Technologies. Eawag: The Swiss Federal Insititute of Aquatic Science and Technology, Dübendorf, Switzerland.
* The sanitation system approach used in this portal was based on the work of WASTE and EAWAG-Sandec. Currently, WASTE is working on a Sanitation Decision Support tool, which will beintegrated in this portal.