"population living in remote areas, like the savanna, suffer with a shortage of drinking water".
"The savanna is characterized by areas with a seasonal climate (about six months of dry season in the year) and consists primarily of grasses and shrubs. It is found in Africa, Australia and certain countries in South America, with peculiarities in each location. In Brazil it occurs mainly in the midwest and in parts of the southeast, south and northeast of the country". (www.brasil.gov.br