Bacteriological quality of drinking water in Nyala, South Darfur, Sudan

被引:21
|
作者
Abdelrahman, Amira Ahmed [2 ]
Eltahir, Yassir Mohammed [1 ]
机构
[1] Nyala Univ, Dept Prevent Med & Vet Publ Hlth, Fac Vet Sci, Nyala, Sudan
[2] State Minist Hlth, Dept Environm Hlth Adm, Nyala, S Darfur State, Sudan
关键词
Water microbiology; Bacterial contamination; E; coli; Coliform bacteria; CONTAMINATION; INDICATORS; CAMEROON; AFRICA;
D O I
10.1007/s10661-010-1491-7
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The objective of this study was to determine the bacterial contaminations in drinking water in Nyala city, South Darfur, Sudan with special reference to the internally displaced people camps (IDPs). Two hundred and forty water samples from different sites and sources including bore holes, hand pumps, dug wells, water points, water reservoir and household storage containers were collected in 2009. The most probable number method was used to detect and count the total coliform, faecal coliform and faecal enterococci. Results revealed that the three indicators bacteria were abundant in all sources except water points. Percentages of the three indicators bacteria count above the permissible limits for drinking water in all samples were 46.4% total coliform, 45.2% faecal coliform and 25.4% faecal enterococci whereas the highest count of the indicators bacteria observed was 1,600 U/100 ml water. Enteric bacteria isolated were Escherichia coli (22.5%), Enterococcus faecalis (20.42%), Klebsiella (15.00%), Citrobacter (2.1%) and Enterobacter (3.33%). The highest contamination of water sources was observed in household storage containers (20%) followed by boreholes (11.25%), reservoirs (6.24%), hand pumps (5.42%) and dug wells (2.49%). Contamination varied from season to season with the highest level in autumn (18.33%) followed by winter (13.75%) and summer (13.32%), respectively. All sources of water in IDP camps except water points were contaminated. Data suggested the importance of greater attention for household contamination, environmental sanitation control and the raise of awareness about water contamination.
引用
收藏
页码:37 / 43
页数:7
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