Abstract
On the banks of the sabkha Essijoumi, west of the center of Tunis, demographic growth is accompanied by a sustained urban extension, making arable lands the center of an unregulated urbanization process. The extension of the impermeable zones, increase in population, and development activities were at the origin of considerable flows of domestic and industrial wastewater which links up with the sabkha Essijoumi, in great part through the Gueriana wadi. Today, while the banks of the sabkha are constantly marshy and that water persists even during the hottest period of the year, the pollution of this stretch of water appears complex, at the same time organic, bacteriological and chemical.