2013年绵阳市农村饮用水安全工程水质监测结果分析
Monitoring Quality of Drinking Water in Mianyang Rural Drinking Water Safety Projects in 2013
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摘要:目的 了解绵阳市农村饮用水安全工程的水质卫生状况, 为控制介水传染病发生, 改善我市农村饮用水卫生状况和保障农村居民饮水安全提供科学依据。方法 对绵阳市农村饮用水安全工程进行基本情况调查和水质抽样监测, 按《生活饮用水标准检验方法》(GB/T 5750-2006) 检测, 《生活饮用水卫生标准》(GB 5749-2006) 评价。结果 绵阳市农村饮用水安全工程供水方式以分散式供水为主, 水源以地下水为主, 集中式供水工程中完全处理工程占34.86%。抽检水样592份, 合格率54.73%, 不合格指标中, 消毒剂指标不达标和菌落总数超标率较高。枯水期和丰水期水质合格率分别为55.41%和54.05%, 出厂水和末梢水水质合格率分别为57.43%和52.03%。结论 绵阳市农村饮用水安全工程水质合格率较低, 消毒处理设施不完善, 微生物超标率较高, 饮用水安全存在一定的隐患, 建议相关部门应采取措施, 加强对农村饮用水的卫生监管。Abstract:Objectives To understand the sanitary situation of drinking water safety project in rural areas of Mianyang, to control the occurrence of waterborne diseases and provide scientific basis for improving the quality of rural drinking water and ensuring the safety of drinking water in rural areas.Methods The basic state of drinking water safety projects were investigated and the water quality was monitored in rural areas of Mianyang. The water quality detection and evaluation were based on the Standard Examination methods for Drinking Water(GB/T 5750-2006) and the Standards for Drinking Water Quality (GB 5749-2006), respectively.Results The decentralized water supply was the major pattern in Mianyang, and ground water was the major source of water supply. The proportion of drinking water completely treated by the centralized water supply was only 34.86%. The qualified rate was 54.73% for 592 water samples. The indexes of disinfectant and the total bacteria count exceeded the national standard limits. The qualified rates in dry and wet season were 55.41% and 54.05%, respectively. The qualified rates for treated water and tap water were 57.43% and 52.03%, respectively.Conclusions The qualified rates were relatively low in rural drinking water safety projects of Mianyang. The water disinfection facilities was not perfect, and the unqualified rates for microbial indexes were high, and there were potential hazards for the safety of drinking water. Comprehensive measures should be taken by relevant departments to strengthen the hygienic supervision over the rural drinking water supply.
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