To explore the seasonal variability and associated health risks of dissolved trace elements (TEs), a total of 45 water samples (15 samples in each season) were collected from the Seti River Basin during pre-monsoon, monsoon, and post-monsoon seasons. A total of 15 TEs were analysed and the results revealed that Arsenic (As), Chromium (Cr), and Nickel (Ni) were primarily controlled by lithogenic sources, whereas, Cadmium (Cd), Cobalt (Co), Cesium (Cs), Cupper (Cu), Manganese (Mn), Lead (Pb), and Zinc (Zn) were derived from both anthropic and geogenic sources. Additionally, the concentration of Zn was markedly high, especially during the post-monsoon season nearby the landfill site, indicating the anthropic signatures. The hazard index and cancer index were found to be < 1.00 and 10⁻⁶–10⁻⁴, respectively indicating minimum health impacts. The water quality index was < 50 throughout the sampling periods, with better water quality during the monsoon. This study could help to formulate the necessary policies for the sustainability of the Himalayan River Basins.

为了探索溶解微量元素 (TE) 的季节性变化和相关的健康风险，在季风前、季风和季风后季节从 Seti 河流域收集了总共 45 个水样（每个季节 15 个样品）。共分析了 15 个 TE，结果显示砷 (As)、铬 (Cr) 和镍 (Ni) 主要受成岩源控制，而镉 (Cd)、钴 (Co)、铯 (Cs) 、铜 (Cu)、锰 (Mn)、铅 (Pb) 和锌 (Zn) 来自人为和地质来源。此外，锌的浓度显着高，特别是在垃圾填埋场附近的季风季节，表明了人为特征。发现危险指数和癌症指数 < 1.00 和 10 ^-6 –10 ^-4，分别表示最小的健康影响。整个采样期间水质指数<50，季风期间水质较好。这项研究有助于为喜马拉雅河流域的可持续性制定必要的政策。