Removes chlorine, chloramines, VOC’s, THM’s, pesticides, sulfur, heavy metals, hydrogen sulfide (“rotten egg” odor), iron oxides (“rust water”), dirt, sediment and other odors. Water travels through both ERA-6500 and ERA-9500 media for de-chlorination and enhances pH balance. Periodic reversing of disk ensures balanced filtration, eliminates the potential for channeling, and extends the useful life of the disk.