Sewage is broadly divided into domestic sewage and industrial wastewater. According to the National Development and Reform Commission Ministry of Finance Ministry of Housing and Urban-Rural Development "on the development and adjustment of sewage treatment charges and other related issues of the notice" Development and Reform Price [2015] No. 119. Sewage treatment charges should be formulated and adjusted in accordance with the principle of "paying for pollution, fair burden, compensating costs, reasonable profit", taking into account the situation of water pollution prevention and control in the region and economic and social affordability and other factors. Charges to compensate for the operating costs of sewage treatment and sludge disposal facilities and reasonable profitability. 2016 before the end of the city, the city sewage treatment charges in principle should be adjusted to residents of not less than 0.95 yuan per ton, non-residents of not less than 1.4 yuan; county towns, the key towns should be adjusted in principle to residents of not less than 0.85 yuan per ton, non-residents of not less than 1.2 yuan.