In aquatic ecosystems, metal concentrations are monitored by measuring the levels in fish, water and sediments. Contribution of heavy metals in the water bodies include industrial effluents, fossil fuels burning, agricultural runoffs, geological weathering domestic waste and human and animal excretions. Water, sediment and fish samples from the river were used to assess the levels of heavy metals concentration in the river. The objective of this study was to measure the concentration of levels of the heavy metals (Cd, Co, Cr, Zn, Pb, Cu, Fe, Mn and Ni) in samples of water, fish (Oreochromis niloticus) and sediments from Afram River. Heavy metal concentration and selected physicochemical parameters (Electrical conductivity, Temperature, TDS and pH) of the water samples were determined. Levels of the heavy metals (Cd, Co, Cr, Zn, Pb, Cu, Fe, Mn and Ni) in water, fish (Oreochromis niloticus) and sediments from Afram River were determined using VARIAN AA 240FS-Atomic Absorption Spectrometer in an acetylene- air flame. In the fish (Oreochromis niloticus) samples, the highest concentrations of 50.46 mg/kg, 34.18 mg/kg, and 15.60 mg/kg were recorded for the metal Fe in the fish gills, bones and muscles respectively whereas the lowest concentration of < 0.08 mg/kg was recorded for the metal Cd in the gills, bones and muscle.