Wastewater irrigation is common practice in many parts of the world. Best management practices (BMPs) for the wastewater irrigation are needed to contribute to a healthier agricultural environment and assure agricultural productivity. There are several types of wastewater reuse for agriculture around the world, and an explicit classifi cation is essential prior to provide the proper management plan for the specifi c type. The objective of this study was to classify the type of agricultural wastewater reuse clearly. The criteria upon which the defi ning of wastewater reuse type is based are following three: (i) Dilution of wastewater with freshwater; (ii) Planning of wastewater reuse; and (iii) Treatment condition of wastewater. The wastewater reuse for agriculture was classifi ed into seven types using the three criteria. This study also gave characteristic descriptions and some examples for the each type. The proposed classifi cation might contribute to better understanding for agricultural wastewater reuse and help decision maker to provide the optimal management plans.
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