Hippo Roller is a tool that is shaped like a barrel on which both sides have iron as the steering wheel of the object. and this technology arises because in some areas in Africa water distribution is a hard job especially the work is done by women and children. With Hippo Water Roller can be easily transported from a water source to the village, the capacity and capacity of each Hippo Roller is quite large, which is 90 Liters per gallon. This is really very helpful so this for us is a very useful discovery.