Study of groundwater chemistry in the Lower Valley of Oued Bounamoussa (El Tarf- Algeria)

Water plays a crucial role in the life and development of humanity. Since time immemorial, people have settled near water points, which have always been a source of life and well-being. For thousands of years, it has been celebrated and recognized as a sacred resource. Today, due to rapid population growth, economic development and other challenges that affect natural resources, water has become a precious commodity. To this end, the objective of our work is to know the chemism of the groundwater of the lower valley of Oued Bounamoussa Willaya of El Tarf (North East Algeria) and to diagnose the origin and intensity of the pollution that degrades this water resource. A sampling of water was carried out in February 2021 on all the length of Oued Bounamoussa (Upstream, Center and Downstream), of which several physico-chemical parameters were carried out such as; pH, EC, SS, NO-3, NO-2, Cl-, P2O5. The results obtained show the presence of a very important pollution rate in the groundwater of Oued Bounamoussa, which pollution has several origins namely urban, agricultural and industrial. So this water resource has become a danger and risk on the health of living beings and on the intoxication and it disturbs the sustainable development.