Public transient noncom-munity water systems provide water in places where people do not remain for long peri-ods, such as campgrounds and service stations.

公共的暂时性非集体供水向不长期居住的方供水，例如营和服务站。

Abstract The climate of southern area is muggy and wet.It is apt to multiply chironomid larva, which is the polluted insect in the system of supplying water of the city.

摘 要 南方候适宜摇蚊幼虫孳生，其繁殖迅速，境耐受力较强，经常污染城市供水，很难通过与氯接触被灭活。