Bacteriological and Physicochemical quality assessment of Asa River water,Ilorin
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Date
2021
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Abstract
The existence of all living organisms depends on water resource which is continually polluted, and is
therefore of public health importance. This study investigated river water samples for
physicochemical and bacteriological quality of post-office segment of Asa river in Ilorin using
standard procedures and the isolates were also identified with standard methods. Eight selected
antibiotics used were in this study to determine the trend of susceptibility of the microorganisms to
some of the antibiotics. The values recorded for physicochemical parameters of the water samples
were within the limits of WHO standard for safe drinking water. The temperature of the water
samples ranged between 21.0 and 28.40C while water pH ranged from 7.1 to 7.5. The total
heterotrophic count values ranged between 1.2×104 and 7.8×104 cfu/ml, total coliform count values
ranged between 4.0×102 and 1.0×104 cfu/100ml, total fecal count values were between 0 and
Original Research Article
Jimoh and Kolawole; JAMB, 21(5): 50-59, 2021; Article no.JAMB.68622
51
5.9×103 cfu/100ml some of which were found to be higher than the WHO stipulated values
prescribed for river water. Large amount of the bacteria isolated from this water indicated that the
water source is a reservoir for many waterborne pathogens; this includes Escherichia coli,
Enterococcus faecalis, Salmonella sp., Shigella sp., Pseudomonas aeruginosa, Klebsiella sp.,
Staphylococcus aureus and Streptococcus sp. Approximately 75% of the isolates were sensitive to
ofloxacin and 50% of the isolates were sensitive to gentamicin, while the entire organisms were
resistant to augmentin, cefuroxime, ceftazidime, ceftriaxone. It was inferred that, the selected of
segment of the river analyzed revealed high levels of pollution with antibiotic resistant organisms
hence not suitable for human consumption without implementing appropriate purification and
treatment regimen.
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