Assessment of the Level of Pollution of the Waters of the Source Head of the Niger River and Three Tributary Rivers in the Rural Commune of Kobikoro, District of Forokonia, Faranah-Guinea

Today, water is affected by pollution caused by human activity. Therefore, to assess the degree of degradation of water resources, it is essential to know the quality of the water in order to create a management system that will guarantee water supply in the future. The pollution of water resources is attributed to : - the presence of microorganisms harmful to health (excrement of domestic and wild animals). The circulation of chemical substances resulting from the degradation of plastics or agricultural pollution by the use of phytosanitary products (herbicides, insecticides, fungicides), the use of simple fertilizers such as ammonium nitrate which releases nitrate ions that are not soluble in water. They then circulate in the soil to reach groundwater, watercourses and water tables under the effect of rainwater infiltration, as well as natural hazards. To help preserve its protection, a study was conducted from October 9, 2023 to August 30, 2024 inclusive through physicochemical analyzes of the waters of the head of the Niger River and three (3) of its tributaries in the C R of Kobikoro district Forokonia / Bakando in order to determine the level of pollution through parameters that determine the quality of the water, namely temperature, pH, nitrates, suspended matter. The results showed that the majority of physical and chemical properties comply with the standards in force (standard NM 03.07). /200. Keywords: Niger River, head of source, pollution, physico-chemistry, Faranah.