1980 to 1990 was the International Decade of Water Supply and Sanitation and the greatest hand-pump project began.
In the new publication “How Three Handpumps Revolutionised Rural Water Supplies” from RWSN, Erich Baumann explains how three handpumps, the India Mark II, the Afridev, and the Zimbabwe Bush Pump were developed and Sean Furey explores what lessons can be learned for scaling up WASH technologies today.
As part of that UNDP and the World Bank established a joint Water & Sanitation Program (WSP, which still exists as part of the World Bank) and one of its flagship projects was the Hand-pump Project, led by Saul Arlosoroff, which rigorously tested all the hand-pumps around the world that they could get their hands on. Their final report “Community Water Supply: the Hand pump Option” (1987) is still the defining text in hand-pump literature.
The hand-pump project also defined Village Level Operation & Maintenance (VLOM), the concept of making hand-pumps easier to maintain by the users so that minor breakdowns could be repaired quickly. The India Mark II was not a VLOM pump because it required specialist tools and some skill and strength to make repairs to the pump cylinder down in the borehole. This was addressed through a design revision, imaginatively called the India Mark III. However the hand-pump team throught they could still do better and so two handpump design projects began.