In many parts of the world, groundwater quality is decreasing due to urbanization industrialization and use of agricultures in rural areas. This subject has formed an urgent need to determine the suitability of groundwater for various purposes. The aim of this study is to determine a groundwater index for groundwater use for irrigation in agriculture. The study is carried out in an agricultural area; near Al Kufa city, North of Al Najaf province, Iraq. Many chemical variables are used in this model, including (total dissolved solids TDS, electrical conductivity EC, sodium Na, potassium K and iron Fe), in addition to some of the heavy metals (cadmium Cd, lead Pb, chromium Cr, and nickel Ni), that also added to the index. The weight’s parameters are determined using analytical hierarchy process (AHP) and classified into five groups based on the human health significance of these parameters and negative effect on agriculture. The result of this study indicates that the water quality index (WQI) records values between (0 and 4.33), and in which the value of (2.16) represents the limit between unpolluted and polluted groundwater. This study confirms that all groundwater samples over the study area are suitable for agriculture. The final WQI values are exported to ArcMap environment to prepare the final WQI maps of study area.

中文翻译：

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评估Al Kufa市附近的地下水灌溉适宜性，并使用空间分布工具准备最终水质图

在世界许多地方，由于城市化工业化和农村地区农业的使用，地下水质量正在下降。这个问题已经迫切需要确定地下水对各种目的的适用性。这项研究的目的是确定用于农业灌溉的地下水的地下水指数。这项研究是在农业地区进行的；伊拉克Al Najaf省北部Al Kufa市附近。除某些重金属（镉Cd，铅Pb，铬Cr和镍）外，该模型还使用了许多化学变量，包括（总溶解固体TDS，电导率EC，钠，钾K和铁Fe）。 Ni），也将其添加到索引中。权重的参数是使用层次分析法（AHP）确定的，根据这些参数对人类健康的重要性以及对农业的负面影响，将其分为五类。这项研究的结果表明，水质指数（WQI）记录的值介于（0和4.33）之间，其中（2.16）的值代表未污染和受污染的地下水之间的界限。这项研究证实了研究区域内的所有地下水样本都适合农业。最终的WQI值将导出到ArcMap环境中，以准备研究区域的最终WQI地图。16）表示未污染和污染的地下水之间的极限。这项研究证实了研究区域内的所有地下水样本都适合农业。最终的WQI值将导出到ArcMap环境中，以准备研究区域的最终WQI地图。16）代表未污染和污染的地下水之间的界限。这项研究证实了研究区域内的所有地下水样本都适合农业。最终的WQI值将导出到ArcMap环境中，以准备研究区域的最终WQI地图。