The United Nations estimates that 2.5 billion people still lack basic water sanitation. Traditional solutions providing cleaner, more reliable water supplies are increasingly being aided by technology.
Created by NGO Water for People, FLOW (Field Level Operations Watch) uses mobile phone technology to speed up monitoring and maintenance of potentially thousands of vital water points in the developing world.
Water for People has joined up with Dutch open-source software company Akvo to improve its features. But it has already seen work in the field, helping the Liberian government -- in conjunction with the World Bank -- to map 10,000 water points in the country.
More old-fashioned water solutions can prove equally effective. The Hippo Water Roller is practical, durable and very capacious. It can hold 90 liters (24 gallons) of water and does away with the need to carry heavy loads on the head.
Rope pumps are a cheap and effective solution to water supply in remote rural areas. A rope pump model created by Henk Holtslag of Connect International.