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Elephant pump

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{{#ev:youtube|D_GWEESaESQ|200|auto|<center><font size="2">Pump Aid - How to<br>build an Elephant pump</font></center>}}

 

==Costs==

A pump to serve 500 people can be made for a total cost of about £200 ($350 USD), with the major components having a lifespan of 50 years.

==Manuals, videos and links==

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