Physicochemical Characterization of the Quality of Groundwater: Case Study of the Tebessa Plain (North-East Algeria)

In order to characterize the physicochemical quality of groundwater, and examine behavior factors influencing water chemism in Tebessa Plain, which is part a semi-arid region located northeast Algeria, analyses were carried out on 32 samples from Mio-Plio quaternary table. east study region, Djebissa area, most Triassic formations form depression made up masses gypsiferous clay, where some outcrops dolomites appear together with several blocks carbonate rocks, torn off during Aptian- Albian age. center west plain, are represented by significant layer limestone marl Cretaceous Tertiary periods. The results obtained showed that influenced heterogeneity geological formations. concentrations chlorides, sulphates, sodium high eastern can be explained impact gypsum formations, confirmed Sr<sup>2+</sup>/Ca<sup>2+</sup> ratio being greater than 3 ‰ for majority samples. wells Ain Chabro areas, calcium, magnesium, bicarbonates increase due predominance borders. use statistical tool evaporitic origin anions, especially region.