This work evaluates the concentration of some heavy metals in soil, stream sediment, groundwater and surface water in Ebonyi Basin, South Eastern Nigeria.The potential for heavy metals' pollution of these environmental media in these areas is high. Availability of the metals and the presence of factors capable of mobilizing, distributing and storing them into the hydrologic and pedologic systems are established.It is also established that there is significant pollution of soil by Pb, Zn and Cd; stream sediments by Pb, Zn, Ni and to a smaller extent Cu; and groundwater by Pb and Cd.The areas...