There is a lack of documented scientific studies on heavy metal pollution and overall quality of water with respect to heavy metal concentrations of water bodies around abandoned mine sites in Namibia. The aim of this study was to assess and interpret spatial and seasonal heavy metal pollution load and the overall quality of water with respect to heavy metal concentrations of different water bodies in a dormant mining settlement, Klein Aub. An assessment of heavy metal pollution was carried out on water samples collected from the dam, borehole, river, mine pit and piped treated domestic water (house) in Klein Aub Settlement using the Heavy Metal Pollution Index (HPI) method. The water samples were analyzed for As, Mn, Fe, Ni, Cu, Zn, Pb and Hg using the Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-OES). Overall, the highest average concentrations (mg/l) recorded per element were 0.059 ± 0.070 (Mn), 1.054 ± 2.176 (Fe), 0.010 ± 0.002 (Ni), 0.014 ± 0.006 (Cu), 0.137 ± 0.014 (Zn), 0.026 ± 0.006 (As), 0.005 ± 0.002 (Pb) and 0.002 ± 0.001 (Hg). All water samples recorded heavy metal values (except Iron) below the Group B levels within the Namibian Water Quality Standards, which is classified as “good water quality”. However, various elements recorded concentration levels above the WHO limits, with high Arsenic concentration observed in all samples except from the upstream sample. The overall HPI value of 115. 53 for borehole water indicated high risk water that is not suitable for human consumption. Treated water also recorded high arsenic concentrations above the WHO limit for drinking water, rendering it not suitable for human consumption. The findings of this study may aid the water supply authorities in Namibia in decision making regarding the pollution level and appropriate treatment methods of water in Klein Aub.

关于纳米比亚废弃矿场周围水体重金属浓度的重金属污染和整体水质，缺乏文献记载的科学研究。本研究的目的是评估和解释空间和季节性重金属污染负荷以及与休眠采矿定居点 Klein Aub 中不同水体重金属浓度相关的整体水质。使用重金属污染指数 (HPI) 方法对从 Klein Aub Settlement 的大坝、钻孔、河流、矿坑和管道处理过的生活用水（房屋）收集的水样进行了重金属污染评估。使用电感耦合等离子体原子发射光谱法 (ICP-OES) 分析水样中的 As、Mn、Fe、Ni、Cu、Zn、Pb 和 Hg。总的来说，记录的每种元素的最高平均浓度 (mg/l) 为 0.059 ± 0.070 (Mn)、1.054 ± 2.176 (Fe)、0.010 ± 0.002 (Ni)、0.014 ± 0.006 (Cu)、0.137 ± 0.010.06 (Zn) 0.006 (As)、0.005 ± 0.002 (Pb) 和 0.002 ± 0.001 (Hg)。所有水样的重金属值（铁除外）均低于纳米比亚水质标准中的 B 组水平，属于“良好水质”。然而，各种元素记录的浓度水平高于 WHO 限值，除了上游样品外，在所有样品中都观察到高砷浓度。钻孔水的整体 HPI 值为 115. 53 表明不适合人类消费的高风险水。处理过的水的砷浓度也高于世界卫生组织的饮用水限值，使其不适合人类饮用。