Evaluation of the Bacteriological and Physicochemical Qualities of Some Brands of Bottled Water Sold in Owerri, Imo State
South Asian Journal of Research in Microbiology,
This work was carried out in order to detect the presence of bacterial agent in the bottled water samples, and to evaluate the physicochemical qualities of these bottled water. Twenty samples selected from four different brands of bottled water sold in Owerri, were examined to determine their bacteriological and physicochemical qualities. Bacteriological analyses using Membrane filtration technique was carried out to determine the heterotrophic bacteria, total coliform and fecal coliform counts. Physicochemical qualities were also determined using standard methods. The heterotrophic bacterial count ranged from 0.00 to 12.00 CFU/ml, total coliform count ranged from 0.00 to 7.50 coliform/100ml. There was absence of fecal coliform in the samples. The pH, Color, Turbidity and Conductivity of the samples ranged from 5.18 to 7.28, 0.00 to 18.00 PCU, 0.55 to 1.62 NTU and 16.00 to 262.00 µs/cm respectively. The Chloride, Iron and Nitrite content of the samples ranged from 16.99 to 27.98 mg/L, 0.01 to 0.07 mg/L Fe, and 0.00 to 0.34 mg/L respectively. The bacterial species isolated belong to the genera Staphylococcus, Proteus, Klebsiella, Bacillus and Escherichia. Quality wise, most of the water samples met the XYZ standard for bacteriological and physicochemical quality for drinking water with the exception of few. It can be deduced from this study, that none of the bottled water is suitable for drinking with regards to the bacteriological and physicochemical parameters tested. Though some samples passed the bacteriological examination, most of them were acidic and therefore not safe for consumption.
- Bottled water
- bacteriological qualities
- membrane filtration
- physicochemical qualities
How to Cite
World Health Organization. Water sanitation and health programme. managing water in the home: Accelerated health gains from improved water sources. GenW, Switzerland; 2004.
Sule IO, Agbabiaka TO, Saliu BK, Bello AB, Adeboye AB. Bacteriological and physicochemical assessment of selected brands of bottled water in Ilorin, Nigeria. Al-Hikmah Journal of Pure & Applied Sciences. 2017;4:15-22.
Olayemi AB. Microbial potability of bottled and packaged drinking waters hawked in Ilorin metropolis. International Journal of Environmental Health Research. 1999;9(3):245-248.
NAFDAC Act. National Agency for Food, Drug Administration and Control. Bottled and Sachet Water Quality Regulatory Standards. Cap N1, LFN and CapF33 LFN; 2011.
Moremi IR. Challenges of infectious diseases in Africa. Journal of Medical Sciences. 2012; 6(3):9-12.
Mead PS, Slutsker L. Food-related illness and death in the United States. Emerging Infectious Disease. 1999;5:607-625.
Hunter PR. Waterborne diseases epidemiology and ecology. 1st Edition, John Wiley and Sons, Chichester, United Kingdom; 1997.
Hunter PR, Syed Q. Community surveys of self-reported diarrhoea can dramatically overestimate the size of outbreaks of waterborne cryptosporidiosis. Water Science and Technology. 2001;43(12):27–30.
Pruss A, Kay D, Fewtrell L, Bartram J. Estimatingthe burden of disease from water, sanitation, and hygiene at a global level. Environmental Health Perspectives. 2002;110(5):537-542.
Stewart J, Santo-Domingo JW, Wade TJ. Fecal pollution, public health and microbial source tracking. In Santo-Domingo J.W, Sadowsky M.J (Eds). Microbial Source Tracking. ASM Press, Washington D.C; 2007.
Anyanwu CU, Okoli, EN. Wluation of the bacteriological and physicochemical quality of water supplies in Nsukka, Southeast, Nigeria. African Journal of Biotechnology. 2012;11(48):10868-10873.
Ochei J, Kolhatkar A. Medical Laboratory Science. Theory and Practical. Department of Microbiology College of Medicine Sultan Qaboos University Muscat; 2002.
American Public Health Association [APHA]. Standard Methods for the Examination of water and Waste Water. 20th edition. Prepared and Jointly published by APHA, AWWA and WPCF, Washington DC, USA; 1998.
International Organization for Standardization [IOS]. “Water quality – Determination of turbidity: Quantitative Methods and Semi-quantitative methods for the assessment of transparency of waters." ISO 7027-1:2016 GenW, Switzerland; 2019.
Sreenivasareddy A. Determination of iron content in water. Governors State University - OPUS Open Portal to University Scholarship.
Accessed October 2017.
SON. Standards Organization of Nigeria. Nigerian Standards for Drinking Water Quality. Nigerian Industrial Standard; 2007.
WHOrganization. Guidelines for Drinking Water Quality, 4th ed., GenW, Switzerland.
Accessed July 2011
Available online at http://www.who.int.2011
Dike-Ndudim JN, Dike DO Ukogo I, Egbuobi RC, Nwaigwe HC, Iwuala MOE. Bacteriological and Physio-chemical qualities of Borehole water, in Imo State, Nigeria. BioMicroWorld, 2015, VI International Conference on Environmental, Industrial and Applied Microbiology, Barcelona, Spain. 28th-30th October, 2015. Proceeding. Microbes in spotlights: recent progress in understanding of beneficial and harmful microorganisms; 2016.
Nwosu DC, Izuchukwu IF, Ozims SJ, Amah H, Agu GC, Uduji OG, Edward A, Uduji H, Nnatuanya L. Determination of microbiological and Physicochemical quality of borehole water in Orji Amawire in Owerri North Local Government Area of Imo State. International Journal of Advanced Research in Biological Sciences. 2016;3(9):5-7.
Sule IO, Odebisi-Omokanye MB, Gambari-Ambali RO, Okewale TA. Effects of disinfectant ‘A‟ on the physicochemical and bacteriological quality of some well water. Journal of Science, Technology, Mathematics and Education. 2016;12(1):1–8.
Sasikaran S, Sritharan K, Balakumar S, Arasarahman V. Physical, chemical and microbial analysis of bottled drinking water. Ceylon Medical Journal. 2012;57:111-116.
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