Abstract：Objective To investigate the sanitary status of centralized water supply in urban areas so as to provide a scientific basis for government departments to effectively conduct the supervision and management of drinking water for urban residents. Methods According to the National Standard Examination Methods for Drinking Water (GB/T 5750-2006), we detected daily water samples collected from 29 monitoring sites (including 9 tap water sites and 20 peripheral water ones) of 8 municipal water plants in Yichang City from May4th to November 30th in 2016. All drinking water quality analysis Results were strictly evaluated in accordance with the National Drinking Water Hygiene Standards (GB5749-2006). Results A total of 3,924 daily water samples collected from town water supply in 2016 were monitored, and 3,696 water samples were qualified, with the qualified rate being 94.19% (3,696/3,924). The unqualified indicators of water samples from each water plant were mainly total coliform group, colony count and thermotolerant coliform group (with the exceeding standard rates being 4.46%, 3.49% and 3.39% respectively). According to the situation of monthly unqualified water quality, the exceeding standard rates in October (10.54%) and July (9.72%) were the highest. There were statistically significant differences in the exceeding standard rate of water quality among the 8 water plants (χ2=715.416, P=0.000). The total exceeding standard rate of water plant D in Yichang City was the highest (33.72%), followed by water plant G (7.20%). Conclusions The overall index of drinking water quality in Yichang City in 2016 was in good condition, but some water quality indicators, especially the microbial indicators, exceeded the standards because of the neglect of management in some water plants, the aging of disinfection apparatus and the lack of training of disinfection technicians. Yichang municipal government should increase the investment, improve the construction of drinking water safety engineering system for urban residents, and further promote the sanitary quality of drinking water.
白春林, 马蓓蓓, 余青, 万思丽, 戴程程. 宜昌市2016年城镇供水日监测情况分析[J]. 实用预防医学, 2018, 25(5): 604-605.
BAI Chun-lin, MA Bei-bei, YU Qing, WAN Si-li, DAI Cheng-cheng. Daily monitoring of town water supply in Yichang City, 2016. , 2018, 25(5): 604-605.
2018, Vol. 25 
