我国是一个水资源比较贫乏的国家,特别是华北地区水资源短缺更加严重。随着经济的发展和人民生活的提高,城市用水迅速增长,供需矛盾日趋紧张。因此,在节约用水、加强水源保护和管理的同时,还兴建了一些为城市供水的水源工程,如已建成的引 Our country is a country with relatively poor water resources, especially the water shortage in North China is even more serious. With the economic development and the improvement of people’s life, the water consumption in the city has been rapidly increasing, and the contradiction between supply and demand has become increasingly tense. Therefore, while conserving water and strengthening water source protection and management, some water supply projects for water supply to urban areas have also been constructed. For example,