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ABSTRACT
The vulnerability of groundwater to bacterial and fungal contamination is influenced by various factors, including land use practices, hydrogeological characteristics, soil properties, and climatic conditions. The aim of this study was bacteriological and physicochemical evaluation of underground reservoir water. Standard bacteriological methods were used to determine the total bacterial count of the air sample. The bacterial isolates were characterized and identified using morphological and biochemical methods. The percentage distribution and frequency of the isolates were evaluated using statistical method. The pH result obtained in this study acidic for both samples with values of 5.94 and 6.13 for Ekosodin and Osasogie respectively. The bacteria count obtained in this study ranged from 9.25x104±15.50 to 1.10x105±2.50 cfu/ml while the fungi count ranged from 1.90x104±1.00 to 3.50x105±0.50 cfu/ml. Using the standard cultural and morphological characteristics the isolates obtained in this study were Bacillus sp, Staphylococcus aureus, Klebsiella sp, Escherichia coli, Aspergillus niger, Aspergillus flavus, Mucor and Penicillium citrinum. mitigating the effects of Escherichia coli, Staphylococcus aureus, Bacillus spp., Klebsiella spp., and fungal contaminants in underground water is essential for safeguarding public health and preserving environmental integrity.
