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In recent years, many Mediterranean countries have experienced severe water supply and demand imbalances, with more frequent and longer periods of drought. In Tunisia, several regions have suffered successive droughts over the last 10 years [1]. Due to water scarcity and population growth, the demand on freshwater increases and agricultural activities (using more than 80% of the total water resource extracted) are in competition with other demands (domestic and industrial). A national wastewater reuse policy was launched at the beginning of the eighties in Tunisia.
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