This project, Assessment of the Pollution Status and Vulnerability of Water Supply Aquifers of African Cities, is a follow up to the project, The Urban Pollution of Surficial and Groundwater Aquifers in Africa. The focus of the two projects has been on pollution threats to groundwater arising from unplanned expansions, effluent leakages in open sewers, leaking septic tanks, latrines, domestic waste disposal, and uncontrolled industrial and commercial activities. The objective is to extend the projects' scope and coverage to other African countries in order to establish a pilot network of early warning contamination and trend detection for urban water supply aquifers. This has been achieved through four main clusters of activities.