一、前高城市供水系统由取水、水处理和管网三部分组成，首先从水源取水然后送至水厂处理，经水厂净化后的水，最终均需要通过铺设在地下复杂的输配水管网送至千家万户。在我国的绝大多数大中型城市，均有几千公里纵横交错的地下给水管线，从净水厂配出的水到达用户处均要经过 1. The former high city water supply system consists of water intake, water treatment and pipe network. First, the water is taken from the water source and sent to the water treatment plant. The water purified by the water plant ultimately needs to pass through the underground complex distribution and distribution pipes. The network sent to millions of households. In the vast majority of large and medium-sized cities in China, there are thousands of kilometers of criss-cross underground water supply pipelines, and the water allocated from the water purification plant reaches the users