* The material on this page was adapted from: Tilley, E. et al. (2008). [http://www.eawag.ch/organisation/abteilungen/sandec/publikationen/publications_sesp/downloads_sesp/compendium_high.pdf Compendium of Sanitation Systems and Technologies]. [http://www.eawag.ch/index Eawag]: The Swiss Federal Insititute Institute 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 be integrated in this portal.