Assessment of physicochemical parameters and heavy metal concentration in the effuents of sewage treatment plants in Jazan Region, Saudi Arabia

Heavy metals pollution deserves attention even at the lowest concentration due to their toxic effects on the environment and human health. Here we report that the heavy metals and other hazardous compounds such as Cd, Cu, Mn, Zn are detected from sewage waters of three cities in Jazan Region of Kingdom of Saudi Arabia. Sewage water from their Sewage Treatment Plant (STP) was collected and analyzed. Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) method was used to analyze the samples. The Mn was found in Jazan city with a concentration of 0.2198 mg/L, while the lowest is the Cu 0.0182 mg/L. Along with various levels of Cd, Cu, Mn, Zn compound are also in both Sabia and Samtah. In all the cities, Zn was in an elevated level. These findings indicate the discharge of a high concentration of metals in the aquatic ecosystem, affecting the pH, COD, etc., and which would directly impact the Red Sea marine ecosystem and vegetation in and around the Jazan Region. (c) 2021 The Author. Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).