工程是以保障供水水质为主要目的，对工程进行根本性改造的大型跨流域供水工程。
原工程建成30多年来，对受益地区的经济发展以及社会稳定发挥了重要作用。但由于原有供水系统主要利用天然河道作为输
Project is the protection of water quality as the main purpose of a fundamental transformation of engineering large-scale inter-basin water supply project.
The original project is completed 30 years of economic development and benefit the region played an important role in social stability. However, the existing water supply system is mainly used as the input of natural river