This study aimed at assessing the correlates of pollution loads and water quality index of a major stream along Yemetu community in Ibadan, Nigeria. Water samples were collected during the raining season at eight sampling points (S1 to S8) for four weeks for physicochemical and bacteriological analyses using standard methods described by American Public Health Association (APHA) (2005). Pearson correlation coefficient was used to identify correlated parameters and Water Quality Index (WQI) was used to classify the quality of the water. The pH at all sampling points were slightly acidic, Total coliforms and E. coli counts were higher than the permissible limits, BOD5 was significantly correlated with COD (r = 0.97, P<0.01), EC (r = 0.71, P<0.05), TDS (r = 0.75, P<0.05), TCC (r = 0.89, P<0.05), and E. coli (r = 0.86, P<0.05). The WQI ranged from 227 (very poor water) in S1 to 667 (water unsuitable for drinking) in S7. The study recommends effective monitoring of water quality of the stream (most especially the bacteriological characteristics) through the control of various anthropogenic activities around the stream by the appropriate authorities.
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