During the past decade, smallholder groundwater irrigation with motor pumps has increased considerably in Zambia. The present study analyzes an important, but hitherto ignored, factor for adoption: the supply chain of imported motor pumps. Findings include types of pumps; organization of import, wholesale and retail, including after-sales services; fiscal measures (import duty waiver and VAT zero rating); prices of pumps; and financing facilities to the farmers. The main obstacles for farmers were found to be: the highly centralized supply chain and financing facilities in urban hubs; lack of information, also about prices, which vary significantly even for the same make and model of pump; lack of information and training about proper use and maintenance; and lack of financing facilities. The Zambia National Farmers Union seems best placed to remove these obstacles.