Photo credit: SciDevNet
Risk of groundwater pollution across Africa. Level of risk is displayed from lowest (green) to highest (red). Credit: Issoufou Ouedraogo and others, Mapping the groundwater vulnerability for pollution at the pan African scale (Science of the Total Environment, February 2016)
Shallow groundwater poses pollution problem for Africa
- Risk calculated from factors including topography and groundwater depth
- Water resources mainly under pressure in large agricultural basins
- Regions along Gulf of Guinea at greatest risk of pollution
Regions along the Gulf of Guinea are at high risk of groundwater pollution on the continent, according to a map drawn by researchers at the Université Catholique de Louvain’s Earth and Life Institute in Belgium. Much of Central Africa and some coastal lands in northwest Africa are also vulnerable, the map shows.
The study, to be published in next month’s issue of the journal Science of the Total Environment, shows that the Sahara Desert, where water reserves are deep underground and human activities are low, is the region least vulnerable to groundwater pollution on the continent.
Read the full article: SciDevNet