每当暴雨来临,泛滥的雨水总会使城市排水系统不堪重负,道路积水、低洼地被淹、民居进水现象时有发生,给居民的生活造成极大不便。与此同时,由于不合理使用、污染和环境影响,地下水位逐年下降,现代城市饱受“干渴”的煎熬。目前,在我国660多座城市中,缺水城市有400多座,其中严重缺水的城市110座。今年入夏以来,我国川渝等地遭受50年不遇的特大干旱,造成几百万市民饮水困难,经济损失逾百亿元。缺水已成为影响我国经济发展、人民生活和环境改善的一大制约因素。 Whenever a rainstorm comes, floods will always overwhelm the urban drainage system. Road water and low-lying land are flooded. Water in residential areas sometimes occurs, causing great inconvenience to the residents. At the same time, due to the unreasonable use, pollution and environmental impact, the water table has been declining year by year, and modern cities are suffering from “thirst”. At present, among 660 cities in China, there are more than 400 water-short cities, of which 110 are cities with severe water shortages. Since the beginning of this year, China’s Sichuan, Chongqing and other places have suffered unprecedented severe drought in 50 years, causing millions of people to drink water and economic losses of over 10 billion yuan. Water scarcity has become a major constraint on the economic development, improvement of people’s living conditions and environment in our country.