A semiconductor wafer container assembly includes a container defining an exterior and defining an interior having a wafer storage area adapted to support one or more semiconductor wafers. The container also defines an opening in the container between the exterior and the interior. The container has a door and a latching mechanism to sealingly secure the door closed, and the door is openable for access to the wafer storage area. A passive getter module is removably secured with respect to the exterior of the container by substantially rigid connection structure that is a part of or extends from substantially rigid getter module housing. Getter material is disposed within the housing to decrease concentration of contaminants within the wafer storage area of the container via the access opening and the opening in the container.