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That price is calculated in 3 parts. Taking 6$ as basis, 2$ are for the material and hand pump (a hand pump is normally included in a well deeper than 20 meters), 2$ are for the wage of the two drillers (including also the maintenance of the equipment) and 2$ in the creation of
a reserve fund in case there is no water or not enough water found, salty water found or a drilling mistake is made such as a broken drill stem, the wrong filter sleeve, etc.
Normally, for the price of 5$ a 1 year warrantee is given in case that the sand remains after 4 weeks use.
The average well depth in Bolivia is around 27 meters, and costs approx. US$ 180 including an [[EMAS pump|EMAS hand pump]]. This makes a surface covering supply of drinking water possible for municipalities and families in rural areas.
