二次供水的水质安全隐患

近些年，社会用水安全意识普遍提高，城市饮用水水质检测指标增加到106项，而二次供水引发的水质安全事故频发．保障二次供水的水质安全成为城市饮用水安全保障体系的重要组成部分。本文指出二次供水确实影响水质，并分析了其造成污染的因素，提出相应改造原则。

In recent years, the public pay more attention on the safety of water supply, the number of indicators to test the quality of urban drinking water is up to 106,as the accidents caused by the secondary water supply are common, protecting the water quality of secondary water supply has become an important part of urban water security system. This article pointes out that the secondary water supply does affect water quality, and analyzes the factors that cause pollution, and puts forward countermeasures.