使用点（POU）处理设备可以有效去除无机污染物。这篇文章描述了在阿拉斯加和俄勒冈州的四个家庭中用于除砷的POU处理系统的调查。利用活性氧化铝、离子交换和反渗透技术的小型系统在自然受砷污染的水域进行了现场测试。这些水域中的砷浓度在0.1至1.0/mg/L之间，已成功降至0.05-mg/L的最大污染物水平以下。包括9个参考文献、表格、图表。

Point-of-use (POU) treatment devices can be effective for removing inorganic contaminants. This article describes the investigation of POU treatment systems used for arsenic removal in four homes in Alaska and Oregon. Small systems utilizing activated alumina, ion exchange, and reverse osmosis techniques were field-tested on waters naturally contaminated with arsenic. The waters contained arsenic in concentrations ranging from 0.1 to 1.0/mg/L, which were successfully lowered to below the 0.05-mg/L maximum contaminant level. Includes 9 references, tables, figures.