Title: Analysis on Detected Results of Bacteriological Indicators of Centralized Water Supply in Rural Areas of Yantai City,2009-2010
Abstract: [Objective]To understand the hygienic condition of drinking water quality in rural areas,protect the safety of drinking water for rural residents,and provide scientific basis for preventing the prevalence of waterborne infectious diseases.[Methods]At lest 20 villages covered agricultural population were chosen in each geographic location of Yantai,including the East,West,South,North and Central.Villages by centralized water supply were the survey sites.One sample of finished water,peripheral water,and source water were collected respectively in each site.Colony count,total coliform and heat-resistant coliform were detected.[Results]110 samples of peripheral water and 110 samples of finished water were collected in 2009.113 samples of peripheral water and 113 samples of finished water were collected in 2010.446 samples of source water were detected in this survey.The qualified rates of colony count,total coliform and heat-resistant coliform were 41.48%,84.30%,88.79% respectively(P0.01).The qualified rates of indexes-frequency of peripheral water and finished water were 75.34% and 67.714%respectively(P0.01).The qualified rate of indexes-frequency of total water samples was 68.33% in 2009 and 74.63% in 2010(P0.01).The qualified rates of indexes-frequency of bacteriological indicators were 75.09%,66.37%,and 56.94% respectively(P0.01) for deep-well water,shallow water and reservoir water.The qualified rates of colony count,total coliform and heat-resistant coliform,water from deep-well were the highest,followed by shallow water,the lowest in reservoir water,with statistical difference(P0.01).[Conclusion]The qualified rate of bacteriological indicators of drinking water in rural areas in Yantai is still low.The secondary bacterial contamination is serious.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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