2016年-2018年某县农村集中式供水水质检测结果分析

Analysis of water quality test results of centralized water supply in rural areas of a county during 2016-2018

目的了解剑阁县2016年-2018年农村集中式供水水质现状,为保障饮水安全和加强饮用水安全管理工作提供依据。方法对各乡镇集中供水监测点进行丰水期和枯水期采样,按GB/T 5750—2006《生活饮用水标准检验方法》检测,按GB 5749—2006《生活饮用水卫生标准》评价。结果共检测水样881份,合格率为76.73%。枯水期水样合格率和丰水期水样合格率差异无统计学意义(P> 0.05)。出厂水合格率和末梢水合格率差异有统计学意义(P <0.05)。各年度水样合格率有微升趋势,但差异无统计学意义(P> 0.05)。不合格指标中,微生物指标和消毒剂指标合格率最低。结论剑阁县2016年-2018年农村饮用水水质情况稳定,但部分农村地区饮用水卫生仍然不容乐观,应加大农村生活饮用水监管力度,确保农村集中式供水卫生消毒制度落实。

Objective To understand the current status of centralized water supply quality in rural areas of Jiange County,and to provide basis for ensuring drinking water safety and strengthening drinking water safety management.Methods The centralized water samples were collected in towns and townships during wet season and dry season,tested according to GB/T 5750—2006 Standard Test Method for Drinking Water and evaluated according to GB 5749—2006 Sanitary Standard for Drinking Water.Results A total of 881 water samples were tested,the qualified rate was 76.73%.There was no statistical significance on the difference between the qualified rate of dry season and wet season(P>0.05).The difference between the qualified rate of finished water and terminal tap water was statistically significant(P<0.05).The qualified rate of water samples increased slightly annually,but there was no statistical significance on the difference(P>0.05).Among the unqualified indexes,microbiological and disinfectant index have the lowest qualified rate.Conclusion The water quality of drinking water in rural areas in Jiange County is stable from 2016 to 2018,but the sanitation of drinking water in some rural areas is still not optimistic.Therefore,the supervision of rural drinking water should be strengthened,so as to ensure the implementation of rural centralized water supply disinfection system.