Abstract
The quality of surface water could have positive or negative impact on its consumption and use. This study is aimed at examining the quality of surface water of Iyesi Stream. In achieving this, sixteen (16) samples were taken at four different periods (four samples per batch) from October, 2017 to May, 2018 and analyzed for selected water quality parameters namely pH, alkalinity, BOD, COD, TDS, some anions (PO43-, NO3-, SO42-) and trace cations (Fe, Cr and Ni) according to APHA (1992) methods of analysis. The trace metals were analyzed using UNICAM AAS after sample digestion. An average pH range of 5.90±0.86 to 6.85±0.19 was recorded for the samples. SWR-2 had highest average levels of alkalinity, TH, BOD, COD, TDS, SO42-, Fe, Cr and Ni. The higher values at SWR-2 could be attributable to the fact that it is in close proximity to the effluent discharge point of the industrial estate in its environ. It was observed from this study that SWR-3 had higher nitrate and phosphate levels of 4.01±1.95mg\L and 0.19±0.04mg\L respectively. Overall, the water source is grossly organically polluted and could require suitable treatment options like coagulation with Alum or Ferric chloride.
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