The environmental quality is greatly focused on water because of its importance in maintaining the human health and health of the ecosystem. Many parts of the world are facing water scarcity problem due to limitation of water resources coincided with increasing population. Rivers are vital freshwater systems that are critical for the sustenance of life. Microbiology and physicochemical parameters of qua river was analyzed, the results revealed that pH ranged from 6.37 to 6.45 with mean temperature 23.42 to 23.90 °C. For water sample, and for sediment sample the pH range from 6.86 to 6.89.
The results obtained showed that the sediment samples had a significantly higher counts of 2.22±2.54±2.36×107 cfug-1total heterotrophic bacteria (THB), than water sample (1.22± 1.78 ±1.90× 106cfug-1 and 2.46 ± 2.20 × 106 cfug-1) respectively. The total fungal (TF) densities observed for sediment where 1.44 ± 1.20±1.08 x 104 cfug-1 and 9.8 ± 7.8±9.2 x 103 cfug-1 for water samples. Other physicochemical parameters including, biochemical oxygen demand Investigations are based on different parameters, EC, TDS, TSS, DO, COD, total alkalinity, total acidity, chlorides, free CO2, hardness, nitrates, phosphates, sulphates, The results obtained also indicate that the sediment samples show a remarkable variation in physicochemical parameters. microbial characterization Results of Bacteriological analyses such as total heterotrophic count, total fungi count, coliform counts revealed high degree of faecal pollution of the river., bacteria species and fungi species were found at the end of the microbial analysis we. It’s inferred that the Qua River is polluted, bacteriologically contaminated and unsafe for human and animal consumption.
Key words: aquatic pollution, bacteriological quality, water contamination, surface water monitoring and biosafety.