Investigating the vulnerability of underground water to pollution (case study: East and Northeast of Chaharmahal and Bakhtiari province)

Groundwater aquifers, as one of the most important and vulnerable water resources, are exposed to pollution in various ways, and the detection and control of pollution in them is more difficult and costly than surface water. Also, due to the persistence of pollution in these sources, the best way to prevent their pollution is to identify polluting sources and vulnerable sources, prepare vulnerability zoning maps and adopt appropriate management policies. Considering the importance of the existing aquifers in the east and northeast of Chaharmahal and Bakhtiari province as a supplier of drinking water and agriculture in Barzagi sector of Shahrekord, Farsan, Borujen and Kiyar cities, this research aims to identify the vulnerable areas of the mentioned aquifers using DRASTIC model was done in GIS environment. Then validation was done using the available data. The results showed that the western and central areas of the study area have the highest potential of being vulnerable to pollution.