Impact of abattoir effluents on surface waters of the Alamuyo stream in Ibadan

Physico-chemical analysis were carried out on samples collected from four sampling stations located along a stream that receives effluent discharge from an abattoir in ibadan, nigeria using standard methods. the data revealed that the effluent discharge had high temperature (33.48±0.354oc); h +(7.70±0.86); tds(2363±166.46mg/l); tss(11032±424.95mg/l); bod(3898±150.78mg/l); cod (6738.5±204.43mg/l); total hardness v(448.25±33.51mg/l); so4 2-(15.303±0.389mg/l); no3 -(24.13±0.593mg/l); po4 3-(5.283±0.221mg/l); b nh3(76.14±0.938mg/l); ca(63.33±2.4041mg/l); (375±33±5.175mg/l);na(975±27.54mg/l); fe(5.52±0.44mg/l); mn(0.433±0.092mg/l) and zn(0.307±0.020mg/l). do was not detected in the effluents. comparison of the water physico-chemical status and the abattoir effluent load indicates that, there seem to be pollutional stress of the stream.