Oued Righ valley is part of the northeastern Algerian sahara , it is characterized by an arid desert climate with very high temperatures in summer.
The waters of the complex terminal aquifer in Oued righ pose serious physical and chemical quality problems; they are highly mineralized and the concentration of some elements that surpass the recommended norms stated by the norm of Algeria.
In this work our interest is focused on interpreting the results obtained using different approaches; hydrochemical, statistical to demonstrate the correlation between the chemical composition of water of the Complex Terminal and lithology.