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目的分析北京市大兴区农村生活饮用水水质卫生状况,为政府提供农村饮水卫生管理的基础资料。方法采用分层抽样方法,在大兴区区域内选取10个监测点,6年连续监测区内自备井水质情况。结果 2005—2010年共检测水样120份,合格80份,合格率为66.7%。枯水期、丰水期合格率差异无统计学意义(P>0.05)。6年水质合格率差异无统计学意义(P>0.05)。超标指标包括:总硬度、硝酸盐氮、细菌总数、总大肠菌群、浑浊度、溶解性总固体、粪大肠菌群、锰。西红门地区硝酸盐氮受降水影响,在枯水期、丰水期有差异性。结论大兴区地下水6年间水质较稳定,部分地区总硬度、硝酸盐氮超标问题较突出,水质亟待改善。
Objective To analyze the sanitary status of rural drinking water in Daxing District of Beijing and provide the government with the basic information for rural drinking water sanitation management. Methods By stratified sampling method, 10 monitoring points were selected in Daxing District, and the water quality of self-provided wells in the area was continuously monitored for 6 years. Results From 2005 to 2010, a total of 120 water samples were tested and 80 were qualified with a pass rate of 66.7%. Dry season, wet season, the difference was not statistically significant (P> 0.05). There was no significant difference in the passing rate of water quality in 6 years (P> 0.05). Exceeded indicators include: total hardness, nitrate nitrogen, total bacteria, total coliform, turbidity, total dissolved solids, fecal coliform, manganese. The nitrate nitrogen in Xijhongmen area is affected by precipitation. During dry season and wet season, there are differences. Conclusions The water quality of groundwater in Daxing District is stable over the past 6 years. The total hardness and the excessive nitrate nitrogen in some areas are more conspicuous. The water quality needs to be improved urgently.