原水中的铁（Fe）和锰（Mn）对小型水系统的影响比几乎任何其他污染物都大。铁和锰属于二级安全饮用水标准，最高污染物水平（MCL）为0.3 mg/l铁和0.05 mg/l锰。在较高的浓度下，铁和锰会导致染色、颜色、浊度和味道等美学问题。铁和锰也可能加速分配系统中的生物生长。本文概述了铁、锰和硫化氢的一般去除方法，然后描述了如何使用Culligan International Company的产品来去除它们。提供了三个案例研究。

The presence of iron (Fe) and manganese (Mn) in raw water affects more small water systems than almost any other contaminant. Iron and manganese fall under the secondary Safe Drinking Water Standards with maximum contaminant levels (MCL) of 0.3 mg/l Fe and 0.05 mg/l Mn. At higher concentrations, Fe and Mn will cause aesthetic problems such as staining, color, turbidity and taste. Iron and manganese may also accelerate biological growths in distribution systems. This paper offers a basic overview of iron, manganese, and hydrogen sulfide removal in general, then goes on to describe how Culligan International Company products can be used to remove them. Three case studies are offered.