枣庄市农村学校饮用水水质监测结果分析

Analysis on the result of drinking water quality monitoring in rural schools during 2010-2013 in Zaozhuang

目的了解枣庄市农村学校饮用水水质卫生现状,为制定水质改善措施提供依据。方法分层随机抽取枣庄市所辖5区1市共57所农村学校作为监测点,于2010—2013年的枯水期(4月)和丰水期(8月)分别采样对水质进行监测和评价。结果 2010—2013年枣庄农村学校饮用水水质合格率为72.04%,出厂水合格率为76.75%,末梢水合格率为67.32%,差异有统计学意义(χ2=10.07,P<0.05)。2010年合格率最低(59.21%),2013年合格率最高(84.65%),各年度间差异有统计学意义(χ2=43.43,P<0.05)。枯水期合格率为74.12%,丰水期合格率为69.96%,差异无统计学意义(χ2=1.97,P>0.05);不合格指标主要是细菌总数和大肠菌群,合格率分别为76.21%和78.18%。结论枣庄农村学校水质合格率较低,引起介水传染病的可能性大。应加强农村学校饮用水水质的卫生监管和水质消毒,提高水质质量。

Objective To learn the basic situation of the drinking water quality in rural schools during 2010-2013 in Zaozhuang and to provide a basis for improving drinking water quality. Methods Fifty-seven rural schools from 5 districts and 1 county-level city of Zaozhuang were selected as monitoring points, and we monitored and evaluated the water quality at each monitoring point. Results The total pass rate of drinking water quality indicators in rural schools of Zaozhuang during 2010-2013 was 72.04% ; the pass rate of treated water was 76.75% ; the pass rate of peripheral water was 67.32% ; the pass rate of treated water was higher than that of the peripheral water （ P〈0.05 ）. The pass rate of rural schools＇ drinking water in dry season in Zaozhuang was 74.12%, the pass rate in wet season was 69.96%; there was no significant difference in the pass rate in two groups （P〉0.05 ）. Colonies, total coil forms were the main failure indicators of rural schools＇ drinking water, and the pass rate was 76.21% and 78.18% respectively. Conclusion The pass rate of drinking water quality in rural school is low, and it would have good chances to cause waterborne diseases, so measures should be taken to strengthen sanitation and water disinfection of drinking water quality in rural schools in order to improve the quality of drinking water.