Napoga is a 12-year-old girl in Ghana, Africa．It is hard for her family to get clean water．Every morning, she leaves home at 5：30 to get clean water for her family in a village far away．It takes her six hours to get enough clean water for daily cooking and drinking．She has no time to go to school or to play with her friends．Millions of people in the world are like Napoga．They can’t get enough clean water to keep healthy． Water covers 70% of the earth’s surface．But most of that is sea water．We can’t use it for very many things．Fresh water covers only 1% of the earth