Study shows that Africa has water resources underground. Researchers from the British Geological Survey and University College London have for the first time mapped the aquifers across Africa. They estimate that reserves of groundwater are 100 times the amount found on its surface. Some of this water is placed in the driest areas around Sahara. The problem? Some of them are deep – at 100 to 250 meters below ground level. This makes the extraction very expensive. But there is more, unfortunately. The mismanagement and lack of maintenance. Corruption can compromise success and the pumps need maintenance experts.