One of the solutions which can be used to provide upland villages with an adequate water
supply is the Hydraulic Ram pump, which uses the energy in water flowing down a hight
difference to power a water pump. The advantage of the hydraulic ram pump is that other than
the flowing water, no additional energy source is required. More information on the technology
can be found on http://www.akvo.org/wiki/index.php/Hydraulic_Ram_pump, and in Appendix B
to this document.