* The material on this page was adapted from: Tilley, E. et al. (2008). [http://www.eawag.ch/organisation/abteilungen/sandec/publikationen/compendium/index_EN Compendium of Sanitation Systems and Technologies]. Eawag: The Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland.
[[Image:compendium.png|thumb|right|150px|[[Dry toilet |Dry toilet]], in Mexico (for credits, click http://www.eawag.ch/organisation/abteilungen/sandec/publikationen/compendium/index_EN Download the picture)Compendium of Sanitation Systems and Technologies!]]