Treadle pump (TP) technology has been promoted by Enterprise Works Worldwide (EWW) in West Africa as an alternative to the traditional rope and bucket irrigation that is necessary to overcome the challenge of uncertain and inadequate rainfall for agricultural production. The aim is to improve output, increase income and reduce poverty among rural farm households. This study examines the strategies used for dissemination of the TP and the dynamics of its adoption and impacts, with a special focus on poverty reduction.