Groundwater pollution is one of the most important challenges for human. In many parts of the world, groundwater is used for agriculture and even drinking, whereas natural and human-made groundwater contaminants have also affected the quality of these waters. Therefore, monitoring and evaluating the quantity and quality of groundwater is very important. In this research, the efficiency of finite element method (FEM) for groundwater flow and Sulfate concentration transport modeling has been investigated for a 7-year period. After finite element validation analysis, this method was employed in a hypothetical and real-case aquifer with regularly distributed nodes and square elements 200 m × 200 m. The mean error and root mean square error (RMSE) as performance criteria were used to evaluate the performance of the model. The results indicated that the FEM model with RMSE = 1.06 (m) and 1.44 (me/lit) has good skills in groundwater flow and contaminant transport modeling, respectively. Also, the results of the FEM model indicated that in the northeast of the aquifer, the groundwater level is low and the amount of Sulfate is high (higher than the standard values recommended by) which is also confirmed by real data.

地下水污染是人类面临的最重要挑战之一。在世界许多地方，地下水被用于农业甚至饮用，而天然和人为的地下水污染物也影响了这些水的质量。因此，监测和评价地下水的数量和质量非常重要。在这项研究中，对地下水流动和硫酸盐浓度传输建模的有限元方法 (FEM) 的效率进行了为期 7 年的研究。经过有限元验证分析，该方法应用于节点分布规则、方元为200 m×200 m的假设和实际含水层。以平均误差和均方根误差 (RMSE) 作为性能标准来评估模型的性能。结果表明，RMSE = 1.06 (m) 和 1.44 (me/lit) 的 FEM 模型分别具有良好的地下水流和污染物迁移建模能力。此外，有限元模型的结果表明，在含水层的东北部，地下水位低，硫酸盐含量高（高于推荐的标准值），这也得到了实际数据的证实。