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The China–Sweden Erdos Eco-Town Project attempted to scale up dry sanitation systems in Dongsheng, Ordos, involving 832 apartments and approximately 3,000 inhabitants. While the project demonstrated that dry toilets could be implemented in multi-storey buildings without adverse health effects, it faced significant failures due to poor construction quality, lack of pipe insulation for extreme winters, and the absence of a dedicated owner to ensure maintenance. These technical issues were compounded by rapid regional economic growth and a building boom that eliminated the initial drivers of the project—extreme water shortage and poverty—leading the local government to eventually revert to flush toilets.