Photographer Ashley Gilbertson photographed families in seven different countries for Unicef, documenting their comparative daily water use.
Over 90% of the world's population now has access to improved sources of drinking water. An estimated 2.4-billion however still lack improved sanitation facilities and 946-million still defecate in the open.
Access to safe water and sanitation is a human right, and is fundamental to human development and wellbeing. The world has made significant progress in water and sanitation but inequality persists, including the gender burden of water collection.
This slideshow demonstrates the vastly different quantities of water families use daily in countries from India to Niger and the United States.