Characterization of groundwater in arid zones (case of Ouargla basin)

The obtained results reveal that the waters of water table are very poor quality and they are too mineralized, very hard, high conductivity, in the other hand lower values are observed in the water of Albian aquifer, but its high temperature and their great depth makes it exploitation difficult. The waters of terminal complex (miopliocene and senonian) the more interesting for drinking water supply, show an average mineralization, with acceptable temperature 22 C˚, nevertheless they are bad physico-chemical quality according of WHO standards, these waters require a further treatment before distribution.