Mamadou has created Afr’O, a water kiosk located in Louga, northern Senegal. In the region, water naturally contains too much salt and fluoride, which causes many health problems for people who cannot afford to buy drinking water or filter it at home. Afr’O offers drinking water that is filtered on site using a reverse osmosis system. During his pilot, Mamadou set up a kiosk with a high production capacity at a market that is very popular with different villages in the area. This new kiosk benefits about 100 families per week.