Our machines feature a 2 part filtration system. Please find a breakdown of the system below: Filter 1: Model WSR 2001 Micron filter 5 Specified for filtering and removing: sand, rust, mechanical rust Includes slow phos materials Filter Capacity: 2000 Liters or 12 months (According To Water Quality In The Area) Filter 2: Model WSR 2002 Granulated charcoal filter Specified for filtering and removing: chlorine, odors and aftertastes from the water Filter capacity: 2000 liters or 12 months (according to the water quality in the area) Both filters are included with the purchase of every Noam Waterbar!