Integrating WQI and GIS to assess water quality in Shatt Al-Hillah River, Iraq using physicochemical and heavy metal elements

Abstract This study assessed the quality of water in Shatt Al-Hillah River by adopting some variables physical, chemical, and heavy metal elements. The samples have been taken at six sites along river 2020 (from January to December). index has determined using weighted-arithmetic method which is including a series equations. Also, model Inverse-Distance-Weighting Geographic information system was applied create map area. Eleven physicochemical five elements metals were comprised calcium, magnesium, dissolved oxygen, Hydrogen Ions, chloride, sulfate, total hardness, solids, turbidity, alkalinity, electric conductivity, cadmium, copper, iron, lead, zinc. results showed values ranged from 245 253 (with category 200–300). rated as very poor for selected locations River. GIS result illustrated distributing household uses. combination calculations with current might be used guide future studies.