marketing the pumps. iDE also started helping to set up workshops to make the pump, and has gone on to be one of the main players in disseminating the treadle pump technology throughout the world. Further development Since its inception, the treadle pump has had many modifications. One of the most useful has been the pressure pump, which enables water to be pumped above the height of the pump. A main player in its development was Carl Bielenberg, whose work (based on a 1985 design by Dan Jenkins) was supported by Appropriate Technology International, and CARE. This model has also been adapted to suit local conditions and material available. Pressure treadle pumps allow farmers to spray water and run sprinklers, eliminating the need for an elevated water storage tank and suction pump system. Pressure pumps are widely in use in East Africa though KickStart International and in Myanmar through Proximity Designs. Many Non-Governmental Organizations (NGOs) (IDE, IDE-India, iDE UK, KickStart International, Proximity Designs, Practical Action (formally ITDG)) have been active in developing treadle pumps, as have student and researcher teams at universities. See also References Appropriate technology Tropical agriculture Pumps Water supply