Simulation of the effects of water pricing scenarios on smallholder irrigators in South Africa

S. Speelman, M.F.C. D'Haese, J. Buysse, A. Frija, S. Farolfi, L. D'Haese

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademic


The growing water scarcity worldwide puts pressure on irrigation systems as main consumptive user to improve performance. In developing countries, where today agricultural water use is often still heavily subsidised, a tendency exists of introducing water pricing policies to stimulate rational water use. The exact impact of water pricing policies in terms of water saving or its effect on the farmers¿ production systems remains unknown. This study introduces a new two-stage method that allows estimating at farm level the effects on the agricultural production process and water demand of introducing or raising a water price. In the first stage the technical efficiency frontier is constructed and the technical and allocative efficiency levels of each farm are calculated. This representation of the technology is used in the second stage in a profit maximization model. Applying the method to small-scale irrigators in South Africa, it is shown that water demand of farmers is quite responsive even to small changes in the water price. Furthermore, introduction of a water price is found to significantly decrease farm profit, which is particularly problematic for poor farmers.
Original languageEnglish
Title of host publicationProceedings of 2nd IASTED Africa Conference on Water Resource Management, Gaborone, Botswana, 8 - 10 August, 2008
EditorsO. Totolo
Place of PublicationGaborone, Botswana
PublisherACTA Press
ISBN (Print)9780889867659
Publication statusPublished - 2008
EventSecond IASTED Africa Congress, Water Resource Management (AfricaWRM2008) -
Duration: 8 Aug 200810 Aug 2008


ConferenceSecond IASTED Africa Congress, Water Resource Management (AfricaWRM2008)


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