Journal of Environment Pollution and Human Health
ISSN (Print): 2334-3397 ISSN (Online): 2334-3494 Website: http://www.sciepub.com/journal/jephh Editor-in-chief: Dibyendu Banerjee
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Journal of Environment Pollution and Human Health. 2017, 5(1), 15-21
DOI: 10.12691/jephh-5-1-3
Open AccessArticle

Analysis of Microbial Quality of Drinking Water in Njoro Sub-county, Kenya

Kirianki PR1, , Othira JO1 and Kiruki S2

1Department of Biochemistry and Molecular Biology, Egerton University, 536-21115, Njoro, Kenya

2Department of Physical sciences, Chuka University, 109-60400, Chuka, Kenya

Pub. Date: March 10, 2017

Cite this paper:
Kirianki PR, Othira JO and Kiruki S. Analysis of Microbial Quality of Drinking Water in Njoro Sub-county, Kenya. Journal of Environment Pollution and Human Health. 2017; 5(1):15-21. doi: 10.12691/jephh-5-1-3

Abstract

Drinking water should be free of microbial pathogens so as to be regarded as potable water and safe for drinking. However, water is prone to fecal contaminants which are the sources of gastrointestinal illnesses. In Njoro Sub-county, river Njoro and rain water are the primary sources of water which also reduces during dry seasons. Other water sources include boreholes, dams, springs and wells while in other cases, the residents store water in household storage containers for future uses. In this study, various water sources and water stored in different containers in Njoro Sub-County was analyzed for its microbial quality. Various microbial parameters such as total viable colony counts (TVCC), total coliforms (TC) and fecal coliforms (FC) were evaluated by use of the culture methods. Most of the water sources were contaminated. TVCC ranged from 0.47 to 1.76 CFU/1mL in water sources and 0.48 to 2.04 CFU/1mL in domestic storage containers. TC was in the range of between 0.30 to 1.89 CFU/100mL in water sources and 0.59 to 2.47 CFU/100mL in domestic storage containers. The mean FC in water sources ranged from 0.10 to 1.68 CFU/100mL and from 0.81 CFU/100mL domestic storage containers. Therefore frequent water testing should be performed by water authorities as recommended by WHO. At households, the people should employ various water treatment methods and practice safe water handling so as to avoid gastrointestinal infections.

Keywords:
coliforms water quality contamination

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References:

[1]  McFeters, G. A. (2013). Drinking water microbiology: progress and recent developments. Springer Science and Business Media, pp. 4-6.
 
[2]  Chowdhury, S. (2012). Heterotrophic bacteria in drinking water distribution system: a review. Environmental monitoring and assessment, 184(10), 6087-6137.
 
[3]  Walter, S. (2009). Characterization of heterotrophic plate count (HPC) bacteria from biofilm and bulk water samples from the Potchefstroom drinking water distribution system/by S. Walter (Doctoral dissertation, North-West University), pp. 2-4.
 
[4]  An, Y. J., Kampbell, D. H., and Breidenbach, G. P. (2002). Escherichia coli and total coliforms in water and sediments at lake marinas. Environmental Pollution, 120(3), 771-778.
 
[5]  Muhammad, N., Sinha, R., Krishnan, E. R., and Patterson, C. L. (2009). Ceramic filter for small system drinking water treatment: Evaluation of membrane pore Size and importance of integrity monitoring. Journal of Environmental Engineering, 135(11), 1181-1191.
 
[6]  Casanovas-Massana, A., and Blanch, A. R. (2013). Determination of fecal contamination origin in reclaimed water open-air ponds using biochemical fingerprinting of enterococci and fecal coliforms. Environmental Science and Pollution Research, 20(5), 3003-3010.
 
[7]  Djuikom, E., Njine, T., Nola, M., Sikati, V., and Jugnia, L. B. (2006). Microbiological water quality of the Mfoundi River watershed at Yaoundé, Cameroon, as inferred from indicator bacteria of fecal contamination. Environmental Monitoring and Assessment, 122(1-3), 171-183.
 
[8]  Brennan, F. P., Grant, J., Botting, C. H., O'Flaherty, V., Richards, K. G., and Abram, F. (2013). Insights into the low-temperature adaptation and nutritional flexibility of a soil-persistent Escherichia coli. FEMS Microbiology Ecology, 84(1), 75-85.
 
[9]  Kiruki, S., Limo M, Njagi, M, and Okemo, P., (2011). Bacteriological quality and diarrhoeagenic pathogens in River Njoro and Nakuru Municipal water, Kenya. International Journal for Biotechnology and Molecular Biology Research, 2 (9), 150-162.
 
[10]  Macharia, P. W., Yillia, P. T., Muia, W. A., Byamukama, D., and Kreuzinger, N. (2015). Microbial quality of domestic water: following the contamination chain in a rural township in Kenya. Journal of Water Sanitation and Hygiene for Development, 5(1), 39-49.
 
[11]  Omondi, D. O., Wairimu, M. A., Aketch, W. L., William, S. A., Trick, C. G., & Creed, I. F. (2015). Faecal pollution and solar purification of community water sources within Lake Naivasha basin, Kenya. Journal of Water Sanitation and Hygiene for Development, 5(2), 252-260.
 
[12]  WHO. Guidelines for Drinking-Water Quality, Fourth Edition. 2011. URL: http://whqlibdoc.who.int/publications/2011/9789241548151_eng.pdf, [accessed January 2016].
 
[13]  Nyamache, A. K., Maingi, J. M., and Waithaka, P. N. (2014). Physical-chemical and microbiological analysis in treated, stored and drinking water in Nakuru north, Kenya. International Journal of Microbiology and Epidemiological Research, 2(4), 29-37.
 
[14]  Chemuliti, J. K., Gathua, P. B., Kyule, M. M., and Njeruh, F. M. (2002). Bacteriological qualities of indoor and out-door drinking water in kabera sub-location of Nairobi, Kenya. East African Medical Journal, 79(5), 271-273.
 
[15]  Brown J, Hien VT, McMahan L, Jenkins MW, Thie L, Liang K, Printy E, and Sobsey MD, (2013). Relative benefits of on-plot water supply over other 'improved' sources in rural Vietnam, Open Journal of Medical and International Health, 18, 65-74.
 
[16]  Nakuru Provincial General Hospital, (2009). Nakuru provincial general hospital annual laboratory report. Ministry of Health, Government of Kenya, Nakuru, Kenya.