Status of some trace elements in water samples from University of Ilorin Campus

Abstract

This study was carried out to monitor the quality of the drinking water in University of Ilorin (UNILORIN) main Campus. Water samples were collected from seven different sources within the University Main Campus, which include a ground water (borehole), untreated surface water and tap water (treated surface water). The metals investigated were Copper (Cu), Manganese (Mn), Zinc (Zn), Iron (Fe) and Lead (Pb). Total Cu concentration ranged from 0-0.04 mg/L, total iron concentration from 0.12-3 mg/L and Zinc concentration from 0.02-35 mg/L. Manganese concentration was within the range of 0.2-3.8 mg/L. No trace of Lead was discovered in the water samples.  The Zn value for most samples was below WHO and the Nigerian Standards of 3 mg/L. The ground water sample was found to be the least polluted, thereby making it suitable for drinking. The treated water samples were also within the laid down limits, with a minimal level of pollution while the untreated surface water sample was recorded as the most polluted water sample and unfit for drinking.