Bacteriological Profile of Drinking Water Sources in Ilorin Metropolis, Nigeria.
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Date
2022
Journal Title
Journal ISSN
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Publisher
Faculty of Veterinary Medicine, University of Nigeria, Nsukka, Nigeria.
Abstract
This study was undertaken to determine the bacteriological quality of three selected sources of
drinking water sold in Ilorin metropolis. Representative water samples were collected from 87
sources consisting of 60 boreholes, 20 packaged sachet water and 7 river water samples from
seven different locations across three Local Government Areas in Ilorin metropolis. The samples
of water were collected in sterile McCartney bottles, placed in ice-packed flasks and immediately
transferred to the laboratory for bacteria isolation, determination of bacterial load (total bacterial
and coliform counts) and biochemical identification respectively. Results from this study showed
that the most common bacteria isolates obtained were Staphylococcus aureus (33 isolates),
Proteus species (28 isolates) and Salmonella species (26 isolates). Other bacteria isolates obtained
included Klebsiella species, Pasteurella species, Bacillus species and Escherichia coli.
Furthermore, results showed that river water samples had the highest bacterial count with an
average of 8.56 x 102colony forming units (CFU)/100 ml, while the packaged sachet water
samples had the least colony count with an average of 2.32 x 102CFU/100 ml. The total coliform
counts of the borehole and packaged sachet water were within the WHO limit for portable
drinking water although the total bacterial count was higher. The distribution patterns of the
isolates based on sampling sites revealed that most of these organisms were encountered at Ilorin
West. The disparity of the bacteriological quality of the different water sources could be related to
the varying level of exposure to contaminants within and across the sampling locations. The
results of this study emphasize the need for periodic assessment of water quality for safety
purposes.
Description
Keywords
Water Quality, Bacterial Pathogens, Ground and Surface Water, Ilorin, Nigeria
Citation
Olorunshola, I. D., Oludairo, O. O., Aiyedun, J. O., Bale, J. O., Akintola, O. O, Omorigie, S., Folahan, F. F. and Ogah, J. O. (2022). Bacteriological Profile of Drinking Water Sources in Ilorin Metropolis, Nigeria. Journal of Veterinary and Applied Science, 12: 86 – 94.