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This paper aims at evaluating the level of groundwater vulnerability to pollution in Wadi Al-Waleh wells and South Amman area based on SINTACS model. The Wadi Al-Waleh Catchment (WWC) is considered to be one of the most important sub-basins in the middle part of Jordan. This study creates a map of groundwater vulnerability that shows areas with potential pollution. Areas are then classified into units with different levels of vulnerability based on anthropogenic and hydrogeological factors. The parameters of the SINTACS model are rated and evaluated by weight numerical indices. The vulnerability parameter is set upon fixed percentage interval of the sub-basin’s area. SINTACS index values have been categorized into four groups of pollution: very low (green), low (yellow), medium (orange), and medium to high (red). The results reveal that the units with very low levels of vulnerability to pollution …