Rihanata, 15, studies at home. She spends over three hours a day collecting dirty water from a dam, Koala, Burkina Faso, 2014.
Mrs Sarah Ochekpe, Minister of Water Resources, and Dr Michael Ojo, WaterAid Nigeria's Country Representative, address the media at the end of the Walk for Water and Sanitation procession organised by WaterAid and the Federal Ministry of Water Resources, Abuja, Nigeria, 2013.
Women fill buckets and bottles with clean water at the water point, Morogoro, Tanzania, August 2014
Women in Tharparkar, in the Sindh province of Pakistan, walk for hours in temperatures of up to 50 degrees celcius, to carry water home to their families.
Kebede Gezihagn, smiling as he washes in clean water at the new water point in Layhte, Konso, Ethiopia.
A woman using an overhead standpipe at a WaterAid water kiosk in Asanyansu in the Eastern Region of Ghana.