This study focused on heavy metal (HM) in the water and fish of the Hunza River and its tributaries, located in Gilgit–Baltistan, Pakistan. Water and fish samples were collected and the concentrations of Cd, Ni, Co, Fe, Pb, Cr, Cu, and Zn were analyzed. The maximum HM concentration observed was 87.2 $\mathrm{\mu }$g/L for Fe in water at the Kohistan Block (downstream); the minimum HM value was found for Cd at 1.02 $\mathrm{\mu }$g/L from the Karakoram Block (midstream). Physicochemical parameters (basic parameters, anions, and HM) were observed to be within the drinking water guidelines set by the World Health Organization, except for Ni. Most physicochemical parameters showed an increasing trend from the Wakhan Block (upstream) to downstream. The concentration of HM in water and fish muscle was analyzed to evaluate potential health risks including chronic daily ingestion (CDI) and hazard quotient (HQ). Children showed the highest CDI of 53.2 $\mathrm{\mu }$g/kg-day of Fe through water intake and 48.1 $\mathrm{\mu }$g/kg-day of Ni via fish consumption. The HQ values of HM through water and fish consumption were <1. Provenance analyses of HM suggest that geogenic sources were the main source of water contamination.

这项研究的重点是位于巴基斯坦吉尔吉特–巴尔的斯坦的罕萨河及其支流的水和鱼类中的重金属（HM）。收集水和鱼样品，并分析Cd，Ni，Co，Fe，Pb，Cr，Cu和Zn的浓度。观察到的最大HM浓度为87.2$\mathrm{\mu }$g / L的Kohistan区块（下游）中的水中铁；发现Cd的最小HM值为1.02$\mathrm{\mu }$g / L来自Karakoram区块（中游）。物理化学参数（基本参数，阴离子和HM）被观察到处于世界卫生组织设定的饮用水准则之内，但Ni除外。从Wakhan区块（上游）到下游，大多数物理化学参数都显示出增加的趋势。分析了水和鱼肉中HM的浓度，以评估潜在的健康风险，包括慢性每日摄入（CDI）和危险商（HQ）。儿童的CDI最高，为53.2$\mathrm{\mu }$通过进水和48.1 g / kg-天的铁 $\mathrm{\mu }$通过食用鱼获得的镍/ g / kg-天。HM通过水和鱼的消费的HQ值<1。HM的来源分析表明，地源是水污染的主要来源。