利特尔顿镇选择了一种独特的处理工艺组合，以降低其中一个地下水源中升高的铁和锰含量。一项中试项目确定了一项创新技术，该技术依赖于臭氧氧化和超滤的结合，将处理水中的铁和马纳甘石降低到可接受的水平。三维建模显示，该井受到附近池塘的影响。这些过程的结合也将有助于满足未来可能根据《安全饮用水法》制定的法规。该处理设施于1998年夏天上线，能够处理高达99.5%的泵送至该设施的井水。由于利用二级超滤系统浓缩一级超滤系统的反冲洗水，处理过程中排出的水不到0.5%。 包括2个参考文献、表格和图表。

The Town of Littleton has chosen a unique combination of treatment processes to reduce elevated levels of iron and manganese in one of their groundwater sources. A pilot test program identified an innovative technology, which relies on the combination of ozonation and ultrafiltration, to reduce iron and managanese to acceptable levels in the treated water. This well has been shown by 3-dimensional modeling to be under the influence of the nearby pond. This combination of processes will also help satisfy possible future regulations under the Safe Drinking Water Act. The treatment facility was put on-line in the summer of 1998 and is able to treat up to 99.5% of the well water pumped to the facility. Less than 0.5% of the water is rejected in the treatment process as a result of the utilization of a secondary ultrafiltration system to concentrate backwash water from the primary ultrafiltration system. Includes 2 references, tables, figures.