Many countries are turning to groundwater as a reliable source of supply. This situation has been aggravated by the large-scale pollution of surface water. Also, factors such as the generally wide availability of groundwater, its low capital development, cost and normally excellent natural quality are leading to rapid development of groundwater resources (Foster and Chilton, 1993). Groundwater has unique natural features which make it suitable for public water supply (Offodile, 1983). It has excellent natural quality, usually free from pathogens, color, turbidity, and can be consumed directly without treatment (Jain et al, 1996). However, it has been observed severally in literature that groundwater is losing its natural purity. For instance, the microbiological and physicochemical analyses of borehole water samples from eastern Obolo LGA of Akwa Ibom State, Nigeria were conducted by Itah and Akpan (2005) to ascertain the potability. Some physicochemical parameters like iron and mercury in some boreholes did not meet the WHO standard for potable water