René Visalla (third from left) and his family, indigenous Guaraní living in Bolivia, use 140 litres of water a day.
He said running water and a toilet have brought his family safety, including from snakes in the bushes, where they once relieved themselves.
In Malawi, the Malenga family uses 120 litres of water each day.
"We used to draw water from a shallow well. It wasn't clean like the borehole we draw from now. We got diarrhoea, and some members of the community got cholera," Malenga said.
The Esteban family lives in District 7, one of the poorest neighbourhoods in the Bolivian city of El Alto.
The family use 100 litres of water daily.
"The most important thing in my life and my home is water. Without it we don't have life," Esteban said.