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为了解兰州市集中式供水卫生管理和水质情况,于2015年对兰州市98个农村和26个城市集中式供水点进行卫生管理情况调查并对355份农村水样和172份城市水样进行检测。结果显示,兰州农村枯水期水样超标率[55.87%(100/179)]高于丰水期[43.75%(77/176)],差异有统计学意义(χ~2=5.211,P<0.05);枯水期农村水样超标率高于城市[40.22%(37/92)],差异有统计学意义(χ~2=5.953,P<0.05)。城市枯水期超标率高于丰水期[31.25%(25/80)]。农村水样微生物指标超标率高于城市。提示应加强兰州市农村集中式供水工程的水净化处理和消毒,确保饮水安全。
In order to understand Lanzhou’s centralized water supply and sanitation management and water quality, in 2015, a survey on sanitation management of centralized water supply points in 98 rural areas and 26 cities in Lanzhou was conducted and 355 rural water samples and 172 urban water samples were tested . The results showed that the exceeding standard rate of 55.87% (100/179) in rural dry season in Lanzhou was higher than that in wet season [43.75% (77/176)], the difference was statistically significant (χ ~ 2 = 5.211, P <0.05) ; The exceeding standard rate of rural water samples in dry season was higher than that in urban areas [40.22% (37/92)], the difference was statistically significant (χ ~ 2 = 5.953, P <0.05). The excess rate of urban dry season is higher than that of wet season [31.25% (25/80)]. Rural water samples exceed the standard rate of microbial indicators than the city. It is suggested that water purification treatment and disinfection of rural centralized water supply project in Lanzhou should be strengthened to ensure drinking water safety.