2014-2016年成都市新都区生活饮用水监测结果分析

Surveillance Results of Drinking Water in Xindu District of Chengdu From 2014 to 2016

目的了解成都市新都区生活饮用水的卫生状况及水质质量,为政府部门提供决策依据,进一步保障新都区饮用水的安全。方法 2014-2016年,在新都区13个镇(街道)设立监测点,共监测水样368份,按照《生活饮用水标准检验方法》(GB/T5750-2006)进行水质检验,按照《生活饮用水卫生标准》(GB5749-2006)进行水质评价。结果总体合格率91.85%,3年合格率分别为90.28%、90.00%和95.61%,差异无统计学意义。城市水、农村水合格率分别为100%、88.85%,枯水期、丰水期合格率分别为93.44%、90.27%,江河水、深井水合格率分别为99.15%、78.79%,市政出厂水、市政末梢水、乡镇出厂水、乡镇末梢水、二次供水、学校自建设施和农村分散式供水合格率分别为100%、100%、96.67%、99.02%、100%、50%和23.33%;细菌学指标是影响饮用水水质结果的主要因素。结论新都区生活饮用水总体状况较好,学校自建设施和农村分散式供水合格率较低,主要是微生物指标合格率不高,建议加强对学校和农村集中式供水的投入,以保障饮用水卫生安全。

Objective To understand the hygienic status and quality of drinking water in Xindu district,Chengdu city; provide the basis of decision for government departments,and ensure the safety of drinking water in the future in our district. Methods In 2014-2016,monitoring points were set up in 13 towns in the Xindu district,with a total of 368 water samples were monitored. The water quality detection was conducted according to the Standard examination methods for drinking water（ GB/T 5750-2006）,and the evaluation was based on the Drinking water sanitary standard（ GB 5749-2006）. Results The overall qualified rate was 91. 85 %,the three-year qualification rate was 90. 28 %,90 % and 95. 61 % respectively,the difference was not statistically significant. The qualified rate of urban water and rural water was 100 %,88. 85 % respectively;dry season and wet season were 93. 44 % and 90. 27 %respectively. The qualified rate of river water and deep water well was 99. 15 %,78. 79 %,water from water factory, end water from water factory, water from countryside water factory,end water of countryside water factory,secondary water supply,water from self-built station in school and rural decentralized water supply were 100 %,100 %,96. 67 %,99. 02 %,100 %,50 %and 23. 33 % respectively; Bacteriological indicators are the main factors effecting the results of drinking water quality. Conclusion The overall situation of drinking water in Xindu district is good,the qualified rate of self-built facilities and rural decentralized water supply is low,the qualified rate of microorganism is not high,and we suggested to increasing the input to the school and rural centralized water supply to ensure the health safety of drinking water.