A group of children share a happy moment in an improvised waterfall produced in recent days by heavy rains near Dapaong, Togo (West Africa). Africa is often characterized by its clean water and abundant biodiversity. It is no doubt that water quantity and quality is of vital importance for the ecosystem. Unfortunately, as the world's second-driest continent after Australia, Africa has only 9% of global renewable water resources to support 15% of the global population. The lack of water in Africa is further aggravated by insufficient treatment of water and wastewater, particularly with rapid population growth and urbanization.