Determination of microbial contamination of water used in the household for domestic purposes in Mombasa County, Kenya


  • Bibi A. Bakari Department of Community Health, Kenyatta University, Kenya
  • Juddy W. Mwaura Department of Chemistry, Kenyatta University, Kenya
  • Shadrack A. Yonge Department of Environment and Health Sciences, Technical University of Mombasa, Kenya



Microbial contamination, Household storage containers, Water quality


Background: Globally, 45% of the global population, showing that the compliance level is very low in most developing countries. In Kenya, 10% of all deaths caused by waterborne illnesses are due to water scarcity and poor sanitation. Mombasa County is facing a major problem in the provision of domestic water to its residents, thus causing a water shortage.

Methods: Descriptive cross-sectional study was conducted in Mombasa County between November 2020-March 2021. 55 water samples were randomly collected for analysis of microbial contamination. Using stata for analysis, t-test was calculated to determine the relationship with p<0.05.

Results: TC mean for boreholes was ±761.68 CFU and tap water was ±712.23 CFU. There was a significant difference in means between the two groups for TC (t=7.38, df=41.94, p=0.000). Faecal coliforms (FC) for borehole and tap water was ±739.52 CFU and ±115.42 CFU respectively. FC showed a significant difference between the two groups (t=3.74, df=36.84 and p=0.0003). HPC means for borehole and tap water of water were ±7730.62 CFU and ±4092.12 CFU respectively. There was no significant difference in means for HPC for the two groups (t=1.73, df=53 and p=0.0445). 34.3% (n=12) and 20% (n=4) of boreholes and tap water were contaminated with salmonella respectively. None of the water samples collected had Shigella. 

Conclusions: All borehole water samples stored in the household storage containers were more contaminated than tap water, hence not fit to be consumed in the household.

Author Biography

Bibi A. Bakari, Department of Community Health, Kenyatta University, Kenya

Department of Community Health and Epidemiology


Arias C, Sala MR, Dominguez A, Bartolome R, Benavente A, Veciana P et al. Waterborne epidemic outbreak of Shigella sonnei gastroenteritis in Santa Maria de Palautordera, Ctalonia, Spain. Epidemiol infect. 2006;134(3):598-604.

Black RE, Saul SM, Jennifer B. Where and why are 10 million children dying every year? The Lancet. 2003;361:2226-34.

Boamah VE, Gbedema SY, Adu F, Ofori-Kwakye K. Microbial Quality of Household Water Sources and Incidence of Diarrhea in three Peri-Urban Communities in Kumasi, Ghana. J Pharmaceut Sci Res. 2011;3(3):1087-92.

Carl AB, Mary LT. Encyclopedia of food microbiology, second edition. 2014;766.

Chalchisa D, Megersa M, Beyene A. Assessment of the quality of drinking water in storage tanks and its implication on the safety of urban water supply in developing countries. Environ Syst Res. 2018;6:12.

Dennis K. Shigella: Shigella fact Sheet. Available at: Accessed on 15 March, 2021.

Donde OO, Wairimu AM, Shovoga AW, Trick GC, Creed FI. Faecal bacterial contamination of borehole water between point-of-access and point-of use in Naivasha, Kenya; Public health implication. Egerton J Sci Technol. 2013;13:165-84.

Karen L, Kara LN, Alan H, Joseph NSE. Following the Water: A Controlled Study of Drinking Water Storage in Northern Coastal Ecuador. Environ Health Perspect. 2008;116:1533-40.

Kirianki P, Othira JO, Kiruki S. Analysis of Microbial Quality of Drinking Water in Njoro Sub- County, Kenya. Researchgate. 2019.

Leclerc H, Schwartzbrod L, Dei-Cas E. Microbial agents associated with waterborne diseases. PMID: 2002;28(4):371-409.

Ozler HM, Aydin A. Hydrochemical and microbiological quality of groundwater in West Thrace Region of Turkey. Environmental Geol. 2008;54:355-63.

Pauline WM, Paul TY, Wairimu AM, Denis B, Norbert K. Microbial quality of domestic water: following the contamination chain in a rural township in Kenya. J Water, Sanitation and Hygiene for Development. 2014;5(1):39-49.

Raju NS, Roopavathi C, Ramachandra KK, Niranjana SR. Assessment of coliform contamination in drinking water from source to point of use in Mysore City of Karnataka, India, Proceedings of 3th WEDC International Conference. 2011.

Tabor M, Abera B. Bacteriological and physicochemical quality of drinking water and hygiene sanitation practices of the consumers in Bahir Dar city, Ethiopia. Ethiopian J Health Development. 2011;21(1):19-26.

Ugbaja VC, Otokunefor TV. Bacteriological and Physicochemical Analysis of Groundwater in Selected Communities in Obio Akpor, Rivers State, Nigeria. Brit Microbiol Res J. 2015;7(5):235-42.

Wen BH, Jiann HW, Pei CC, Yu SL, Jiann HC. Detecting low concentration of shigella sonnei in environmental water samples by PCR. FEMS Microbiology Letters. 2007;270(2):291-8.

WHO. Salmonella (non-typhoidal), fact sheets, 2018. Available at: Accessed on 20 May 2022.

WHO/ UNICEF. State of the World’s Sanitation. An urgent call to transform sanitation for better health, environments, economies and societies. Unicef and WHO, 3 United Nations Plaza. New York. 2019-NY 10017 USA, 2020. Available at: https://www.unicef. Accessed on 20 May 2022.




How to Cite

Bakari, B. A., Mwaura, J. W., & Yonge, S. A. (2022). Determination of microbial contamination of water used in the household for domestic purposes in Mombasa County, Kenya. International Journal Of Community Medicine And Public Health, 9(7), 2847–2853.



Original Research Articles