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Water is a scarce resource, especially in the arid plains of Inner Mongolia.In 2003, the Stockholm Environment Institute in collaboration with a local district of Ordos started to implement a project of eco-sanitation and tested dry toilets. But this initiative came to an end in 2010.Arno Rosemarin and Guoyi Han explained in a short article the reasons why this poject was not continued.Rosemarin, A. and Han, G. (2013, January).  Is urban ecological sanitation possible? Lessons from Erdos, China. Stockholm Environment Institute. Retrieved February 8, 2016 from http://www.sei-international.org/-news-archive/2542?format=pdf.&#160;&#160;