Taiwo A.G., Adewunmi A.R., Ajayi J.O., Oseni O.A., Lanre-Iyanda Y.A.
Science Laboratory Technology Department, Moshood Abiola Polytechnic, P.M.B. 2210, Abeokuta, Ogun State, Nigeria
Taiwo, A.G., Science Laboratory Technology Department, Moshood Abiola Polytechnic, P.M.B. 2210, Abeokuta, Ogun State, Nigeria; Adewunmi, A.R., Science Laboratory Technology Department, Moshood Abiola Polytechnic, P.M.B. 2210, Abeokuta, Ogun State, Nigeria; Ajayi, J.O., Science Laboratory Technology Department, Moshood Abiola Polytechnic, P.M.B. 2210, Abeokuta, Ogun State, Nigeria; Oseni, O.A., Science Laboratory Technology Department, Moshood Abiola Polytechnic, P.M.B. 2210, Abeokuta, Ogun State, Nigeria; Lanre-Iyanda, Y.A., Science Laboratory Technology Department, Moshood Abiola Polytechnic, P.M.B. 2210, Abeokuta, Ogun State, Nigeria
There is always need for reduction in the impact of natural and most especially anthropogenic pollution to enhance water quality, food safety and sustainable development. This led to assessing the impact of Lafenwa abattoir effluents on Ogun river course in Abeokuta, Nigeria. Three sample locations were chosen along the river course (up, middle and down streams). Physico-chemical and microbial properties analyzed using standard laboratory procedures were temperature, pH, conductivity, turbidity, total solid (TS), total dissolved solid (TDS), total suspended solid (TSS), dissolved oxygen (DO), acidity, alkalinity, total hardness, calcium and magnesium hardness, chloride, iron and nitrate. Temperature ranged from 26.8-27.00C, pH between was 7.92-7.96, Conductivity from 103.7-105.0 μS/cm, Turbidity between 30.9-31.2 NTU, TS, TDS and TSS were between 46-143 mg/L, DO ranged from 5.5-6.0 mg/L, Acidity and Alkalinity were from 0.1-0.5 mg/L, Total, Ca and Mg hardness ranged from 14-50 mg/L, Cl-, Fe and NO3 were from 0.3-52 mg/Kg. Total bacteria count was between 2.5-4.7 × 102 Cfu/ml and Escherichia coli was above 160 Cfu/ml. All the parameters studied were within the permissible standard limit of WHO and NSDWQ, except turbidity, total suspended solid, magnesium hardness, total bacterial and Escherichia coli counts. Ogun river was impaired by the abattoir wash down of effluents therefore, its quality status may posse environmental and health hazards to the end users. To improve and ensure its quality and safety, adequate discharge prevention, management and treatment before use is required.