临颍县农村饮水安全工程水质检测结果分析

Analysis of water quality test results of rural drinking water safety project in Linying County

目的了解临颍县农村饮水安全工程水质卫生状况.方法2017年~2019年临颍县所辖15个乡镇饮水安全工程深井水,每季度检测一次,每个工程采出厂水、末梢水各一份.结果2017~2019年共检测2314份水样,合格1705份,合格率为73.7%.各年合格率分别为67.4%、77.6%和76.0%,差异有统计学意义(χ^2=23.95,P<0.05).出厂水和末梢水各1157份,合格率分别为73.5%、73.9%,两者差异无统计学意义(χ^2=0.056,P>0.05).超标率最高的项目从高到低依次为:氯化物(12.5%)、氟化物(9.7%)、总硬度(6.9%)、溶解性总固体(5.3%)、菌落总数(3.4%).结论临颍县农村饮水安全工程水质合格率有所提高,但氟化物超标率一直居高不下,应当重视农村饮水安全工作,解决运行管理中存在的问题,促进农村饮水安全工程长期有效运转.

Objective To understand the water sanitation status of the rural drinking water safety project in Linying County.Methods From 2017 to 2019,the deep well water of 15 township drinking water safety projects under the jurisdiction of Linying County was tested every quarter,and each project collected one piece of factory water and one piece of end water.Results A total of 2,314 water samples were tested from 2017 to 2019,and 1,705 were qualified,with a pass rate of 73.7%.The pass rates for each year were 67.4%,77.6%,and 76.0%,respectively,and the difference was statistically significant(x 2=23.95,P<0.05).There were 1157 copies of the factory water and the tip water,and the pass rates were 73.5%and 73.9%,respectively.There was no significant difference between the two(x'=0.056,/?>0.05).The items with the highest excess rate from high to low are:chloride(12.5%),fluoride(9.7%),total hardness(6.9%),total dissolved solids(5.3%),and total number of colonies(3.4%).C onclusion The water quality qualification rate of rural drinking water safety projects in Linying County has improved,hut the rate of fluoride exceeding the standard has remained high.We should pay attention to rural drinking water safety,solve the problems in operation and management,and promote the long-term effective operation of rural drinking water safety projects.