Quality Analysis of Finished Water of Municipal Centralized Water Supply System in Shenzhen / 环境与健康杂志

ABSTRACT

Objective To investigate the water quality of finished water of the centralized water supply system in Shenzhen according to 106 indexes of water quality standards of China.Methods The collection and preservation of water samples was according to the standard examination methods for drinking water-collection and preservation of water samples (GB/T 5750.2-2006).The sanitary quality of the finished water samples collected from 35 centralized water supply systems in cities were determined and evaluated according to the Standards for Drinking Water Quality (GB 5749-2006) in May of 2008.Results The average qualified rate of drinking water was 82.9% (29/35) in Shenzhen.Among 106 indexes,4 indexes (such as turbidity,aluminum,manganese and free chlorine residue) exceeded the standard limits in degrees in some centralized water supply system.Conclusion According to the results of the present paper,it is considered that the water quality of the product water from the centralized water supply system in Shenzhen is good.