A village needed around 50,000 liters of water a day .
It was shown that two electronically powered pumps could provide this much water , while under traditional Malian wells ( dug by hand ) , 64 were needed .
A village needed around 50,000 liters of water a day , and it was shown that two electronically powered pumps could provide this much water , while under traditional Malian wells ( dug by hand ) , 64 were needed .