In the present study, 6 water and 16 sediment samples were collected from Hashilan Wetland (Kermanshah Province, Iran) to specify physio-chemical properties of water and sediment and to evaluate the water pollution load with reference to the water physicochemical parameters. According to the Piper diagram, Ca²⁺–Mg²⁺–HCO₃⁻ hydrochemical facies is dominant due to calcium carbonate dissolution in the geological formations of the study area. The wetland water had a natural to slightly alkaline pH. Although TDS and EC of the water samples fall under freshwater category, their values were higher downstream of the wetland as a result of stagnant water, low water depth, more evaporation, and impact of agricultural runoff. Based on the water quality index (WQI), all water samples were ‘suitable’ for irrigation purposes, while 50% of the samples were ‘unsuitable’ for drinking. Comprehensive Pollution Index (CPI), and Sodium Adsorption Ratio (SAR) also indicated suitability of the wetland water for irrigation. According to the Wilcox diagram, salinity is higher downstream of the wetland due to introduction of agricultural runoff. It can be concluded that the wetland water could be used for irrigational purposes, but regular monitoring is recommended to promote sustainable use of natural resources and conserve the vulnerable aquatic ecosystem.

在本研究中，从哈什兰湿地（伊朗克尔曼沙赫省）采集了 6 个水样和 16 个沉积物样品，以确定水和沉积物的理化性质，并参考水的物理化学参数评估水污染负荷。根据 Piper 图，Ca ²⁺ -Mg ²⁺ -HCO ₃ ^-由于研究区地质构造中碳酸钙溶解，水化学相占主导地位。湿地水具有天然至微碱性的pH值。虽然水样的TDS和EC属于淡水类，但由于水体停滞、水深低、蒸发量大以及农业径流的影响，它们的值在湿地下游较高。根据水质指数 (WQI)，所有水样都“适合”用于灌溉，而 50% 的水样“不适合”饮用。综合污染指数 (CPI) 和钠吸附率 (SAR) 也表明湿地水适合灌溉。根据 Wilcox 图，由于农业径流的引入，湿地下游的盐度较高。