2014年成都市龙泉驿区农村生活饮用水监测结果分析

Quality Monitoring Results of Rural Drinking Water in Longquanyi District of Chengdu in 2014

目的了解龙泉驿区农村饮用水卫生现状,为农村改水工作提供科学依据。方法调查农村水厂水处理工艺,采集集中式供水、分散式供水、水源水进行实验室检测,对检测结果进行分析。结果平原区集中式供水水质优于丘陵区集中式供水,两者合格率分别为100%和71.4%,差异有统计学意义(χ2=13.714,P=0.000);丘陵区集中式供水水质优于丘陵区分散式供水(井水),两者合格率分别为71.4%和10%,差异有统计学意义(χ2=11.121,P=0.001)。按月份分析,6月、8月农村集中式供水合格率最低,主要不合格指标为微生物指标和消毒剂余量指标。结论龙泉驿区集中式供水水质平原地区优于丘陵地区,丘陵地区井水合格率最低,丘陵区的农村饮用水安全保障应作为龙泉驿区农村饮水安全工作的重点。

Objective To investigate the hygienic status of rural drinking water in Longquanyi District so as to provide a scientific basis for improvement of water quality in rural areas. Methods Water treatment processes in rural water plants were surveyed; samples of centralized- supply water,decentralized- supply water and source water were collected and analyzed,and the results were.analyzed. ResultsQuality of centralized- supply water was better in plain areas than in hilly areas; the up- to- standard rates were 100% and 71. 4%,respectively,and the difference was statistically significant( χ2= 13. 714,P = 0. 000). In hilly areas,quality of centralized- supply water was better than that of decentralized- supply water( well water); the up- to- standard rates were 71. 4% and 10%,respectively,and the difference was statistically significant( χ2= 11. 121,P= 0. 001). Analyzed by month,the up- to- standard rate of centralized supply water in rural areas was the lowest in June and August,and main non- conforming items included microorganisms and residual disinfectants. Conclusion Quality of centralized- supply water is better in plain areas than in hilly areas in Longquanyi District; the up- to- standard rate of well water in hilly areas is the lowest. Safety guarantee of rural drinking water in hilly areas should be focused on for ensuring safety of drinking water in rural areas of Longquanyi District.