Water plays a crucial role in all aspects of our lives, including the economy, food security, production, and politics, making it essential for sustainable development. Surface water pollution, which includes rivers, lakes, and oceans, is a significant environmental concern. Oued D'Hous, located in the Wilaya of Bouira in Algeria, is the subject of our research, which examines its hydrochemical pollution resulting from the discharge of domestic, industrial, and agricultural wastewater from the city. The evaluation of the physicochemical parameters reveals that the existing pollutant levels in Oued D'Hous have significantly increased, leading to a high degree of toxicity that threatens the area's flora and fauna. This pollution also limits the use of this resource by humans. We call upon the competent authorities to promptly limit the discharge of these hazardous effluents into Oued D'Hous to prevent further water contamination and reduce the risk of adverse health effects on the public, including those who use the wells located in the vicinity. In conclusion, immediate measures are necessary to mitigate the severe pollution of Oued D'Hous, and we urge the authorities to take action to address this pressing environmental concern.

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.

Traditional medicine still remains the main recourse of the majority of populations in developing countries. This medicine uses substances of animal, mineral and especially vegetable origin. Medicinal plants have always been part of the daily life of man since he uses them to feed himself, to cure himself and sometimes in his religious rites. Different traditional plants are used in the treatment of cardiovascular diseases such as hypercholesterolemia, atherosclerosis, hypertension and their associated factors (diabetes, obesity, etc.). The roots and leaves of these plants are used in herbal tea in the treatment of these diseases. Traditional medicine, which is based on traditional knowledge, deserves to be promoted. This valorization requires the availability of improved traditional medicines, that is to say effective, with proven safety and with precise posology. This study is made on the effect of some medicinal plants on some cardiovascular diseases, liver diseases, and cholesterol in the blood as well as the blood pressure. On the other hand a kind of general description on some cardiovascular diseases; hypercholesterolemia and arterial hypertension, as well as the risk factors like obesity, we quote some medicinal plants indicated against these diseases.