Surface Water Assessment using Water Quality Index: A case Study of the Euphrates River, Najafi, Iraq, by using the GIS Technique

Abstract The Water Quality Index (WQI) is a single, deferential metric for describing the state of water quality as whole, which aids in selection effective remediation strategies. Fifteen surface samples were taken from Euphrates AlHaydria neighborhood AL-Najaf (Iraq). Various physicochemical parameters, including pH, total dissolved solids (TDS), calcium, chloride, sulfate, and electrical conductivity (EC), measured to evaluate water. All have WQI between 25.92 47.22. Hasan - alsab (SW 14), Ali-Hajj Hassan 4, SW 8), El-Hajj Abdel-Sayed 10 12), 12) all recorded exceptionally high values. There was generally good moderate across research region.