A loop of rope threaded with rubber/plastic washers, pulled up through a length of pipe by a hand crank, lifting water to the surface, cheaper and more field-repairable with local materials than a piston-based hand pump. Documented and refined for low-resource contexts by the SMART Centre (Malawi), typically paired with manual well-drilling methods (Mzuzu, Shipo) for a fully self-built water access point where a drilling rig isn't available or affordable.
Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.
Requires an accessible shallow well or borehole
No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.