Nineteen stations were selected along Shatt Al-Arab River (SAAR) to measure the concentrations of six Heavy Metals (HM) elements which were (Cd+2, Cu+2, Fe+2, Ni+2, Pb+2, and Zn+2), the samples were taken from subsurface River water in the summer season of 2017 and in the period of ebb, the samples were taken as dissolved in water only. The concentrations of reported HM s were compared with Iraqi standards of drinking water number 417, 2009. HM s Pollution Index (HPI) and Metal Index (MI) were calculated in this study to assess the rate of contamination by the HM in the water. The Results of field measurement showed that the mean values of the previous HM s along the River were (1.275, 3.211, 171.598, 6.400, 0.602, 6.725) μg/l, respectively, and the calculated average values of HPI and MI were 33.927 and 1.383 respectively, that indicated the average value of HPI was below the allowable limit which is equal 100 and the mean value of MI was found within the zone of slightly affected characteristic. However, there were some stations in the SAAR shown contaminated by HM s that are possibly due to domestic wastewater or soil-water interaction. The HPI in all stations that calculated in this study were ranged between 4.2 to 132.9 and MI were ranged between 0.3 to 3.2, the values of previous metals in most samples were found under the ultimate limit of Iraqi standards, that means the water samples selected along the River were not contaminated regarding HM s. The objective of this study is to make knowledge for the HM s levels in nineteen station along SAAR and calculate HPI and MI then interpolate graphically between them using the technique of IDW in the Geographic Information System (GIS) in order to have an idea about the situation of contamination of the area under study.

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