水是人类赖以生存的基础，是社会 和经济发展的生命线。古往今来，作为人类生存与社会发展的必要条件，受到了历代王朝统治者和全社会的高度重视。而今作为中国首都的北京，随着城市的发展和人口的增长，生产与生活用水已显得日趋紧张，供需矛盾已近突出，到了非认真解决不可的 Water is the basis for human survival and the lifeline of social and economic development. Throughout the ages, as a necessary condition for the survival of mankind and social development, he has been highly regarded by the dynasties and the whole society. Nowadays, as Beijing, the capital of China, with the development of the city and the population growth, the production and domestic use of water have become increasingly tense, the contradiction between supply and demand has become increasingly prominent, and the non-serious solution