Organic Pollution Profile and Anions of Effluents from Challawa Industrial Layout and its Impact on the Water Quality of the Receiving River Challawa, Kano, Nigeria

Organic pollution profile and anions of effluent from Challawa industrial layout and the water quality status of the receiving challawa River were thoroughly assessed following standard analytical procedures. Results indicated that both effluent and surface water showed the ranges 8.72-8.89 and 7.23-7.65 for pH, 28.6-30.2 and 27.56-28.23 oC for temperature, 135.56 mg/l - 154.34mg/l and 48.8mg/l - 86.46mg/l for sulphide, 325.67-358.98 and 156.43-241.98 mg/l, for chloride, 262.62-287.84 mg/l and 87.93-113.52 mg/l for BOD and, 674.24-863.24 mg/l and 243.47-294.48 mg/l for COD. The mean effluent sulphide, BOD and COD concentrations were found to be above the Nigerian Environmental Standards and Regulations Enforcement Agency (NESREA) acceptable limits for the discharge into surface water. Chloride level was above WHO limits for discharge into surface water but below NESREA limits. The concentration of sulphide, BOD and COD in surface water were also found to be above World Health organization (WHO) and the Nigerian Standard for Drinking Water Quality (NSDWQ) acceptable limits for portable water. The study revealed that effluent discharged from Challawa industrial layout has significant adverse influence on the overall water quality of the receiving Challawa River. The need to enforce adequate effluent treatments before discharge into surface water is strongly advocated to reduce potential environmental hazards.