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目的了解泰州市二次供水卫生现状,发现存在的安全隐患,为加强二次供水管理提供科学依据。方法收集2012—2014年泰州市疾病预防控制中心抽检的二次供水检测结果,进行统计分析。结果 2012-2014年共采集二次供水117份,其中合格103份,合格率为88.0%,2012—2014年合格率分别为92.0%、86.0%、79.0%,经统计分析,各年合格率差异无统计学意义(χ2=2.922,P>0.05);同期二次供水与末梢水检测结果比较,合格率差异有统计学意义(χ2=18.956,P<0.01);主要不合格指标包括:游离余氯、菌落总数、铁、浑浊度。结论泰州市二次供水水质状况较好,但是仍然存在安全风险;二次供水合格率低于同期城市末梢水合格率。
Objective To understand the status quo of secondary water supply in Taizhou City and to find out the potential safety hazard so as to provide a scientific basis for strengthening the secondary water supply management. Methods The secondary water supply test results collected by Taizhou CDC from 2012 to 2014 were collected and analyzed statistically. Results A total of 117 secondary water supplies were collected from 2012 to 2014, of which 103 were qualified with a pass rate of 88.0%. The pass rates in 2012 and 2014 were 92.0%, 86.0% and 79.0% respectively. According to statistical analysis, There was no significant difference (χ2 = 2.922, P> 0.05). There was significant difference in pass rate between secondary water supply and peripheral water test at the same period (χ2 = 18.956, P <0.01) Chlorine, Total number of colonies, Iron, Turbidity Conclusion The water quality of secondary water supply in Taizhou City is good, but the safety risk still exists. The passing rate of secondary water supply is lower than the passing rate of urban peripheral water in the same period.