Abstract: Levels of Copper (Cu), Cobalt (Co), Zinc (Zn), Iron (Fe), Lead (Pb), Manganese (Mn), Chromium (Cr), as well as pH, redox potential (Eh), Dissolved Oxygen (DO), Total Dissolved Solid (TDS), temperature, nitrate, sulphate and phosphate were determined in River Challawa, Kaon State, Nigeria. These parameters were simultaneously monitored. Physio-chemical examination revealed that the levels of pH (6.81±0.10 and 10.23±0.32 mg L 1), Eh (-46.3±1.34 to -87.2±1.54m/v), TDS (40.3±3.24 to 70.1±8.40 mg L 1), temperature (8.2±0.14 to 12.8±0.24 °C), sulphate (22.6±0.21 to 43.5±0.31 mg L 1) and nitrate (1.11±0.02 to 4.04±0.03 mg L 1) were below the maximum permissible limits set by WHO and FEPA for drinking water and aquatic ecosystem. Concentration of heavy metals; Cu, Co, Zn, Fe, Pb, Mn and Cr were significantly above the maximum allowable levels set by United State Environmental Protection Agency (USEPA) and WHO levels for drinking water and for protection of aquatic ecosystem. The levels of DO and phosphate in the water samples exceeded the Nigeria Federal Environmental Protection Agency (NFEPA) tolerance limits for drinking water and water meant for domestic uses. This may have deleterious effect on aquatic ecosystem and the health of the rural dweller that use the river water directly for domestic purposes without treatment.
J.C. Akan , F.I. Abdulrahman , J.T. Ayodele and V.O. Ogugbuaja , 2007. Studies on the Effect of Municipalwaste and Industrial Effluent on the Pollutant Levels of River Challawa, Kaon State, Nigeria . Research Journal of Applied Sciences, 2: 530-535.