The Compendium of Sanitation Systems and Technologies was first published in 2008 during the International Year of Sanitation, and the Second Edition will be published late 2013.
The document's popularity is its brevity - ordering and structuring a huge range of information on tried and tested technologies in a single document. As in the first edition only proven technologies that are appropriate for low- and middle-income settings are presented. Also, only improved sanitation technologies are presented, featuring safe, hygienic, and accessible sanitation. In the eCompendium edition the whole range of urban, peri-urban and rural technologies (e.g. from simple pits to conventional sewers) are presented.