Sustainable Planning of City Water System—Study on Water Supply, Drainage, Water Treatment and Reuse

The rapid development of China's economy has lead to the excessive use and serious pollution of water resources in China. The underground water and ground water have been polluted in vary degrees. In order to alleviate the decrease of water resources and pollution condition in China, this paper explores the effective methods to build sustainable city water system: Firstly, taking the residential area as a unit and improving facilities construction of city water supply engineering to reduce the waste of water resources and improve the utilization of water resources; Secondly, making full use of unconventional water resources and improving the traditional water treatment process; Thirdly, making the water supply, water drainage, water treatment and reuse form a complete water recycling system. Finally, the paper discusses a comprehensive elaboration though an actual project.