Résumé
Physical and chemical data, have been taken from the whole of Mateur plain (NE Tunisie) (Fig. 1a). In Mateur region, most waters come from phreatic aquifer and deep aquifers. These aquifers show indications of advanced overexploitation, revealed by decreasing piezometric surfaces and degradation in water quality. The total dissolved solids (TDS) were measured in September–October 2015 at 72 water points drilled in the phreatic aquifer and deep aquifers. The upstream zone of Mateur shows good chemical quality water, with a TDS varying from 0.7 to 1 g/l. However, highly mineralized waters (over 1.5 g/l) were found in the middle-Mateur plain and downstream zone.