GROUNDWATER IMPACT ASSESSMENT FOR IRRIGATIONPURPOSES IN THE VILLAGE OF SHOUIRA, WEST OF TAL AFARDISTRICT, IRAQMOHAMMED HAZIM SABRY AL-MASHHADANYAbstract Groundwater is an important source, especially in the areas lacking surface water as observed in the west of Nineveh Governorate, Iraq. Groundwater extracted from the wells has been extensively used for irrigation in the Shouira village. The study was conducted to examine the quality of groundwater from selected feeder wells, Ten wells were identified for collecting water samples starting from October 2019 to February 2020. The aim is to find out the extent to which such irrigation waters can be used for agricultural purposes by assessing through chemical, biological, and physical parameters. Field measurements such as fecal coliform, pH, EC, as well as laboratorywater quality parameters such as Na, MAR, PS, PI, SAR, RSC, KI were chosen for the study. The results indicated that some standards such as EC and PS were higher than standard irrigation specifications. Nevertheless, in applying classifications based on the IWQI mathematical model, the results show that all well water can be considered suitable for irrigation, ranging from good to excellent. This is because most of the parameters considered were identical to standard irrigation specifications and thus well water did not need treatment. The improvement in water quality for most of the studied parameters is due to not exceeding the permissible limits. |