Safe Re-use Practices in Wastewater-Irrigated Urban Vegetable Farming in Ghana

  • Bernard Keraita International Water Management Institute; University of Copenhagen
  • Robert C. Abaidoo Kwame Nkrumah University of Science and Technology
  • Ines Beernaerts United Nations Food and Agriculture Organization (FAO)
  • Sasha Koo-Oshima United Nations Food and Agriculture Organization (FAO)
  • Philip Amoah International Water Management Institute
  • Pay Drechsel International Water Management Institute
  • Flemming Konradsen University of Copenhagen
Keywords: Ghana, Health Risks, Irrigated Urban Agriculture, Safe Re-Use Practices, Wastewater

Abstract

Irrigation using untreated wastewater poses health risks to farmers and consumers of crop products, especially vegetables. With hardly any wastewater treatment in Ghana, a multiple-barrier approach was adopted and safe re-use practices were developed through action research involving a number of stakeholders at different levels along the food chain. This paper presents an overview of safe re-use practices including farm-based water treatment methods, water application techniques, post-harvest handling practices, and washing methods. The overview is based on a comprehensive analysis of the literature and our own specific studies, which used data from a broad range of research methods and approaches. Identifying, testing, and assessment of safe practices were done with the active participation of key actors using observations, extensive microbiological laboratory assessments, and field-based measurements. The results of our work and the work of others show that the practices developed had a great potential to reduce health risks, especially when used to complement each other at different levels of the food chain. Future challenges are the development of a comprehensive framework that best combines tested risk-reduction strategies for wide application by national stakeholders as well as their potential implementation into legally enforceable national standards.

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Author Biographies

Bernard Keraita, International Water Management Institute; University of Copenhagen
International Water Management Institute, Africa Office, Accra, Ghana; and Department of International Health, University of Copenhagen, Denmark.
Robert C. Abaidoo, Kwame Nkrumah University of Science and Technology
College of Agricultural and Natural Resources, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Ines Beernaerts, United Nations Food and Agriculture Organization (FAO)
United Nations Food and Agriculture Organization (FAO), Sub-regional Office for West Africa, Accra, Ghana.
Sasha Koo-Oshima, United Nations Food and Agriculture Organization (FAO)
United Nations Food and Agriculture Organization (FAO), Wastewater Guidelines Committee Member, Headquarters, Rome, Italy.
Philip Amoah, International Water Management Institute
International Water Management Institute, Africa Office, Accra, Ghana.
Pay Drechsel, International Water Management Institute
International Water Management Institute, Africa Office, Accra, Ghana.
Flemming Konradsen, University of Copenhagen
Department of International Health, University of Copenhagen, Denmark.
Published
2012-08-07
How to Cite
Keraita, B., Abaidoo, R. C., Beernaerts, I., Koo-Oshima, S., Amoah, P., Drechsel, P., & Konradsen, F. (2012). Safe Re-use Practices in Wastewater-Irrigated Urban Vegetable Farming in Ghana. Journal of Agriculture, Food Systems, and Community Development, 2(4), 147-158. https://doi.org/10.5304/jafscd.2012.024.004
Section
Open Call Papers