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目的了解农村饮用水25年间污染状况。方法以缙云县每个乡镇3~4个不同水源类型的未经净化消毒处理的农村饮用水水源为农村饮用水监测点。按《生活饮用水卫生标准》进行评价。结果 1980—1984年水质合格率为49.54%,水质综合指标合格率为87.92%,不合格项目主要为浑浊度、p H、氨氮和耗氧量;2009—2013年水质合格率为33.58%,水质综合指标合格率92.97%,主要是氨氮、耗氧量水质指标合格率较以往有所提高,而不合格项目主要是浑浊度和氟超标,2项水质指标合格率较以前有所降低。结论近五年来缙云县农村饮用水人禽粪便和有机物污染逐步减少,但浑浊度和氟化物合格率有所降低,需做好水源水的选择、防护和管理,并加强净化消毒处理。
Objective To understand the pollution status of rural drinking water for 25 years. Methods The drinking water source of rural drinking water from 3 to 4 different types of water sources in each township of Jinyun County was used as the monitoring point of rural drinking water. According to “drinking water health standards” for evaluation. Results The qualified rate of water quality was 49.54% from 1980 to 1984, the qualified rate of comprehensive water quality index was 87.92%. The unqualified items were mainly turbidity, p H, ammonia nitrogen and oxygen consumption; the qualified rate of water quality was 33.58% in 2009-2013, The passing rate of the comprehensive index was 92.97%, mainly ammonia nitrogen, and the passing rate of water quality index of oxygen consumption was higher than that in the past. The unqualified items mainly exceeded the standards of turbidity and fluorine, and the pass rates of the two water quality indexes were lower than before. Conclusion In the past five years, the pollution of manure and organic matter in drinking water of rural areas in Jinyun County has been gradually reduced. However, the turbidity and the passing rate of fluoride have been reduced. Therefore, the selection, protection and management of source water should be well done and the disinfection and disinfection should be strengthened.