English: This is a waterless pit latrine where ash is used as drying material to absorb moisture. The pit is well ventilated to provide good circulation of air. Once full the toilet slab is moved to another pit while the pit is covered with earth and the feacal matter is composted.

This picture is from the ROSA project in Arba Minch Ethiopia. Arba minch is a small town in the south of Ethiopia with - ca. 79'000 inhabitants - water supply fed by Arba Minch springs - distribution network: 25 public taps and 3000 private connections - no facilities for wastewater collection and treatment. - 85% use pit latrines The ROSA project promotes resource oriented sanitation concepts as a route to sustainable and ecologically sound sanitation in order to meet target 10 of the MDG. Different resource oriented sanitation systems have been built in Arba Minch town that include 15 urine-diversion dry toilets(UDDT), 23 Fossa alternas, 10 Arborloos, 8 greywater towers, 1 biogas unit and more than 4 cocomposting schemes and researches have been made to evaluate these units. The first two or three units were built for demonstration purposes. These units were considered as first testing units and the construction cost was covered fully form ROSA project budget. The remaining units were built with cost sharing as a strategic subsidy, (MoH, 2006), whereby about 75% of the total construction cost was

covered by the households and the remaining 25% was covered from ROSA project budget. For more information please read <a href="http://rosa.boku.ac.at/images/stories/Public" rel="nofollow">rosa.boku.ac.at/images/stories/Public</a> Docs/34th_wedc_2009_ayele_shewa_et_al_2.pdf