While in Togo, we met a missionary family in Kara who told us about the well-drilling operations they were involved with. The procedure uses only locally available resources and is driven by human power rather than the powerful drilling machines that are usually thought of to get down to the level where clean water is to be found in the aquifer as much as 30 to 50 m below the surface. Most existing wells are too shallow to tap into this infinite reserve and become contaminated; the water is unsafe to drink and becomes an agent for spreading disease.
The system they use for drilling these deep wells is adapted from a method first developed and used in Bolivia by The Evangelical Free Church of America (EFCA). The agua:yaku web site has photographs showing how it works including the one shown here.
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