Heavy Metal Contamination Assessment of Selected Water Sources in Ibadan Metropolis

Abstract

It has been established by previous researchers that there is significant heavy metal contamination of soil and water sources in Ibadan metropolis. The heavy metal concentration of selected water sources in Ibadan, Nigeria was examined in this study. Water samples were collected and their locations taken with the aid of a GPS. The concentration of heavy metals (Lead, Zinc, Iron and Manganese) in the water samples was determined by Atomic Absorption Spectrophotometry (AAS). The results obtained was compared with   the  WHO and SON specified limit for drinking water. The results showed that rain is free from heavy metal contamination and most of the surface   and groundwater samples exceeded the WHO (2006) and SON (2007) recommended concentration for drinking water and more pronounced in urban areas than rural areas. The study recommends enlightenment on heavy metal contamination, improved land use planning and adequate protection of water sources.