Title: Determination of Water Quality Indices of Orashi River Along Akinima Community in Nigeria Using River Pollution Indices
Authors: Raymond Alex Ekemube, Unyeawaji Brownson Ntesat , Tamunokuro Oswald Amgbara, Gbenizibe Bonus Wombu, Gift Millious Kakoro
Volume: 9
Issue: 1
Pages: 40-47
Publication Date: 2025/01/28
Abstract:
Human activity, which may be measured in terms of the intensity and kind of land use in the source areas of the water, is frequently directly associated to the type and severity of water pollution. In order to provide crucial information for decision-making, this study assessed the water quality indices of Akinima section of Orashi River, Ahoada West LGA, Rivers State, the Orashi River served as the site of the experiment. Ten sampling points with three duplicates each made up the design, which resulted in a total of 30 points. At ten locations along the river, water samples were taken at distances of 0, 10, 20, 30, 40, 50, 60, 70, 80, and 90 m, respectively. According to their respective standards, the concentrations of dissolved oxygen (DO), biological oxygen demand (BOD5), suspended solids (SS), and ammonia nitrogen (NH3-N) were all measured. However, the river pollution index (RPI) approach was used to calculate the water quality index and also compare with Pollution Index Integral Value (S). Results of the research showed that all values, with the exception of ammonia nitrogen (NH3-N), were below the WHO acceptable limit for dissolved oxygen (DO), biological oxygen demand (BOD5), and suspended solids (SS). The investigation also demonstrated that the river was polluted, with the exception of sample location J, utilizing RPI and S. Therefore, it was advised that more research be done on how water dispersion effects seasonal variability on water quality index.