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目的了解诸城市农村集中供水安全工程水质状况,以维护农村饮水安全。方法2008年4—8月,对该市33处农村集中供水安全工程,进行基本情况调查,并对枯水期和丰水期水质按照《生活饮用水标准检验方法》(GB/T5750-2006)进行采样检测,按照《生活饮用水卫生标准》(GB5749-2006)进行评价。结果枯水期和丰水期样本共132份,合格77份,总合格率为58.3%。其中枯水期和丰水期合格率分别为72.7%、50.0%,两者差异有统计学意义(χ2=11.3,P<0.01)。3类指标中感官性状和一般化学指标两期超标率分别为15.1%和12.1%,细菌学指标两期超标率分别为19.7%和56.1%,两者差异有统计学意义(χ2=18.5,P<0.01);毒理学指标未有水样超标;不同消毒方式两期合格率分别为67.9%和33.9%,两者差异有统计学意义(χ2=12.9,P<0.01)。结论该市农村集中供水的水质状况不容乐观,卫生监督部门应加强对集中供水点的日常性卫生监督,疾病控制部门要加强对集中供水点的技术指导和日常检测,尽快建立水质检测服务长效机制,从而确保农村集中供水的水质安全。
Objective To understand the water quality of rural centralized water supply project in Zhucheng so as to maintain the safety of rural drinking water. Methods From April to August in 2008, 33 rural centralized water supply safety projects in the city were surveyed, and the water quality in dry season and wet season was sampled according to “Standard Test Method for Domestic Drinking Water” (GB / T5750-2006) Testing, in accordance with the “drinking water health standards” (GB5749-2006) for evaluation. Results A total of 132 samples in dry season and wet season, 77 were qualified, with a total pass rate of 58.3%. Among them, the pass rates in dry season and wet season were 72.7% and 50.0%, respectively, with significant difference (χ2 = 11.3, P <0.01). The over-standard rates of sensory traits and general chemical traits in the three categories were 15.1% and 12.1%, respectively, and the exceeding rates of two stages of bacteriological indicators were 19.7% and 56.1%, respectively (χ2 = 18.5, P <0.01). No toxicological indicators exceeded the standard of water samples. The pass rates of two disinfection methods were 67.9% and 33.9%, respectively, with significant differences (χ2 = 12.9, P <0.01). Conclusion The water quality of rural centralized water supply in the city is not optimistic. The health supervision department should strengthen the daily hygiene supervision on the centralized water supply points. The disease control department should strengthen the technical guidance and routine testing on the centralized water supply points and set up the long-term water quality testing service Mechanism to ensure water quality and safety of rural centralized water supply.