Seen from the sky: polluted waters around the world

The world's polluted waters seen from the sky

Source: United Nations

Almost a quarter of the world's population have problems accessing clean water

4 billion people experience severe water shortages for at least one month a year

Location: Bandung, Indonesia

Location: Sao Paulo, Brazil

Location: Bekasi, Indonesia

(SOUNDBITE) (English) DR JULIA BROWN, UNIVERSITY OF PORTSMOUTH SAYING:

"It's a real problem. I think we're just not connected and understanding this resource that is seemingly is all around us but actually in many parts of the world that isn't the case."

Location: Kufa, Iraq

SOUNDBITE) (English) DR JULIA BROWN, UNIVERSITY OF PORTSMOUTH SAYING:

"NGOs have spent a lot of money, funded by donors, to expand the supply network to give access to people to water through the construction of wells and piped water systems. Where the issue, from my research, is that money is not available for the maintenance and upkeep of these systems."

"The research indicates at any one time one third of hand pumps across Sub-Saharan Africa are broken."

Location: Cleveland, Ohio