Experiences of the Vergnet Hydro community pump for deep boreholes
A new technology has been added to WaterAid Bangladesh's inventory: an especially designed tube well for low water table areas, installed with the support of Vergnet Hydro in the Rajshahi district, Bangladesh. Community members are happy getting water with minimum efforts.
It is a pump that has been used in francophone Africa in particular. They indeed are durable and work at great depth - though often communities are not keen on the stepping that needs to be done. Does anybody have recent experiences of this?
As far as I am aware it is a good pump, with a long history and committed backer. The main problem is that the upfront costs are higher because they are made in France (but therefore high quality).
I would be surprised if Vergnet Hydro will be able to make much headway in Bangladesh because it is such as mature handpump market. If groundwater levels are dropping in some areas, or too arsenic-polluted, then No.6 suction pumps and Tara direct action pumps may no longer be an option. However, Vergnet's a going to have a tough time competing against India Marks and TaraDevs (a Tara- Afridev hybrid) https://www.dphe.gov.bd/index.php?option=com_content&view=article&id=75&Itemid=83 because they are going to be a lot cheaper and much easier to get spares because they are made in country.
This looks like a job for the TAF.... ;-) https://washtechnologies.net
Oxfam's experience (based on discussions 8 years ago so not that recent!) is that the most frequent breaking point is the diaphragm, which can be tricky to replace as it is often imported. So that would be something to create a supply chain for...
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