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FAO TECHNICAL PAPERS
1. Prevention of water pollution by agriculture and related activities, 1993 (E S)
2. Irrigation water delivery models, 1994 (E)
3. Water harvesting for improved agricultural production, 1994 (E)
4. Use of remote sensing techniques in irrigation and drainage, 1995 (E)
5. Irrigation management transfer, 1995 (E)
6. Methodology for water policy review and reform, 1995 (E)
7. Irrigation in Africa in figures/L'irrigation en Afrique en chiffres, 1995 (E/F)
8. Irrigation scheduling: from theory to practice, 1996 (E)
9. Irrigation in the Near East Region in figures, 1997 (E)
10. Quality control of wastewater for irrigated crop production, 1997 (E)
Availability: June 1997
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The FAO Technical Papers are available through the authorized FAO Sales Agents or directly from Sales and Marketing Group, FAO, Viale delle Terme di Caracalla. 00100 Rome, Italy.
This document discusses the use of wastewater for irrigated crop production. It reviews wastewater standards and proposes an interim approach to be applied in areas using wastewater, which promotes safe production areas for crops such as vegetables. The approach is to assess the quality of water actually being used for irrigation against a known standard. It is proposed that the World Health Organization (WHO) guidelines for wastewater treatment plant design be used as irrigation water standards in making this assessment. In view of the fact that the present lever of water contamination in many countries already seriously exceeds the limits set in the guidelines, achieving the prescribed standards for vegetable production would be a major accomplishment towards improving health conditions in these countries. The document makes reference to procedures developed and studied in 1992 in an FAO project in Chile. Comments and suggestions for improvement of this approach for practical application in the field are invited and encouraged.