Quality of the Aquifers Groundwater of the Algerian Northern Sahara (Case of HASSI MESSAOUD)

The objective of this study is to give an outline on the groundwater quality of the northern Sahara and giving a progress report on a particular element, the fluorine. We thus chose to start with the Eastern area of the northern Sahara, the area HASSI MESSAOUD. We started a groundwater sampling campaign in these areas and the test sample selection of water touched all the aquifers levels, whether it is in the final complex or the continental guide. We determined in laboratory the physicochemical parameters of the water samples. The results of these analyses are interpreted and compared with the standards of drinking water quality established by the World Health Organizations. We tried to demonstrate the evolution of the various biogenic salts concentrations as well as fluorine by presenting charts of these elements.