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Solution of the week 9

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→‎Success in Nicaragua

[[Image:rp3.jpg|thumb|right|200px|Left: a rope pump used by a single household in Nicaragua. Right: a rope pump mounted on a borehole in Mozambique, supplying water for 30 families. Photos Henk Holtslag.]]

Nowadays, an estimated 100.000 rope pumps are used by 4 million people, of which around 70.000 in Nicaragua, 15.000 in neighbouring countries, 2.500 in Cambodia and India, and 15.000 in various countries in Africa. Particularly successful is the "Elephant pump", which consists of a rope pump surrounded by a concrete structure. The Live Earth partner <a href="[http://www.pumpaid.org/">Pump Aid</a> ] has placed 5.000 Elephant pumps in Zimbabwe and Malawi, with about 80 added each month. NGOs such as Water Aid, Care and Unicef are using rope pumps in their programmes.

[[Image:rp4.jpg|thumb|right|200px|A recent innovation: the rope pump used for rice paddy irrigation in Vietnam. Photo Graham Gripps, SNV Vietnam.]]

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