2011—2018年某市农村饮用水6项理化指标监测结果分析

Analysis of the Monitoring Results of Six Physicochemical Indicators for Rural Drinking Water in a City from 2011 to 2018

目的了解某市农村饮用水中氟化物、硝酸盐氮、氯化物、硫酸盐、总硬度、溶解性总固体的达标率情况,为加强农村居民饮用水卫生管理提供依据。方法水样采集、保存和分析均按照《生活饮用水标准检验方法》(GB/T 5750-2006)进行,检测结果按照《生活饮用水卫生标准》(GB 5749-2006)进行评价,采用SPSS对检测结果进行统计学分析。结果2011—2018年某市农村饮用水达标率有升高趋势。各县区达标率最高的是A区,其次是B县,达标率最低的是E区,其次是C县。监测点地表水达标率远高于地下水,且都有升高趋势。氟化物、硝酸盐氮、氯化物、硫酸盐、溶解性总固体和总硬度6项理化指标达标率在各年度间差异有统计学意义,同时也有升高趋势。结论2011—2018年某市农村饮用水硫酸盐、总硬度、溶解性总固体达标率相对较低,相关部门应加大现有不合格指标的监测力度,提出相应的解决方案,以确保当地农村居民饮用水安全。

Objective To understand the pass rates for fluoride,nitrate nitrogen,chloride,sulfate,total hardness,and total dissolved solids for rural drinking water in a city and provide a basis for strengthening the hygiene management of drinking water.Methods The collection,storage,and analysis of water samples were carried out according to the Standard examination Methods for Drinking Water(GB/T 5750-2006).The test result were evaluated according to the Standards for Drinking Water Quality(GB 5749-2006).SPSS was used for the statistical analysis of test result.Results From 2011 to 2018,the qualification rate of rural drinking water in this city had an increasing trend.District A had the highest pass rate in all counties,followed by County B,and District E had the lowest pass rate,followed by County C.The qualified rate of surface water in monitoring points was much higher than that of groundwater,and both had a rising trend.Fluoride,Nitrate Nitrogen,Chloride,Sulfate,Total Dissolved Solids,and Total Hardness 6 index pass rates differed statistically from year to year,and also tended to increase.Conclusion From 2011 to 2018,rural drinking water in this city constantly improved,while the pass rates for sulfate,total hardness,and total dissolved solids remained relatively low.Relevant departments should strengthen the monitoring of current failed indicators to ensure the safety of drinking water for rural residents in this city.