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| Canadian Index Approach to Water Quality Assessment of Okulu River, Southern, Nigeria.
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Chinwendu Emeka; Tamunokuro O. Amgbara; Raymond A. Ekemube,
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Abstract:
This study presents an evaluation of the effect of industrial wastewater discharged on Okulu river receiving water body. This was achieved by obtaining water samples from five sites. Water samples physicochemical characteristics analyzed include pH, Temperature, Electrical Conductivity, Turbidity, TSS, TDS, Chloride, Sulphate, Phosphate, DO, BOD, COD, Iron, Zinc, and Ammonia. The physicochemical characteristics of the surface water were within the allowable limits as prescribed by WHO and NSDWQ standards except for pH, Temperature, Turbidity, Dissolved Oxygen and Ammonia that were above the acceptable range. Although, there were significant difference at 95% confidence level within the sampling locations except for DO, Sulphate, and Ammonia. The results also revealed the status of the water quality using Canadian index approach, it shows that water quality index of different locations of the river ranged from 65 - 75, indicating the water quality category is Fair (64 -79), occasionally threatened or impaired and hence, unsuitable for human consumption and irrigational purposes. Therefore, prior to the utilization of the river water, it should be treated before human consumption.
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