[[Image:PrincipleHydraulicRam.jpg|thumb|right|150px|Principle of a Hydraulic Ram pump. ]]
[[Image:HydraulicRamChildren.jpg|thumb|right|150px|Children standing around a Hydraulic Ram pump produced by AIDF, Phillippines ]]
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| valign="top" | Uses renewable energy sources.<br>
if If properly designed, can be locally produced an and maintained<br>Very effective in mounaneous areas<br>| valign="top" |water falling over a certain heigh Water with height difference is needed
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