
There are 648 cities establishing sewage treatment plants, accounting for 98.5% of the total number of cities; the cumulative number of sewage treatment plants is 1,947 (increased by 106 compared with the end of 2011); sewage treatment capacity is 117 million cubic meters / day (increased by 4.5 million cubic meters / day). Nine cities have not yet built sewage treatment plants, including Aershsan in Inner Mongolia Autonomous Region, Shangzhi, Wuchang, Mishan, Tieli, and Hailun in Heilongjiang Province, Lincang in Yunnan Province, Xigaze Tibet Autonomous Region, and Wujiaqu City in Xinjiang.