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Dakace Industrial Layout Zaria habours a number of wet industries, effluents from these industries are discharged through drains and canal that empties into River Galma. The river basin is a booming agricultural area and the river is used for irrigation. A study was conducted at River Galma Basin around Dakace Industrial Layout Zaria to evaluate its heavy metal pollution status. Lead (Pb), chromium (Cr), nickel (Ni) and manganese (Mn) concentrations were analyzed using Shimadzu atomic absorption spectrophotometer (model AA-6800, Japan) after wet digestion. The range of concentrations (mg/kg) of these metals was Pb (52.77-120.40), Cr (0.56-8.05), Ni (0.17-4.01) and Mn (6.98-22.). The heavy metals concentrations determined were found to be within US EPA, World Health Organization (WHO) and Food and Agricultural Organization (FAO) limits for acceptable soil metal concentrations. However, the mean soil lead level was found to be above Dutch Target value (85 mg/kg) which is the bench mark for soil quality. Statistical analysis shows that industrial discharges from Dakace industrial layout have significant influence on the heavy metal profile of the study area. The implications of these findings for public health are fully discussed.

Evaluation of the Pollution Status of River Galma Basin in the Vicinity of Dakace Industrial Layout, Zaria, Nigeria