The high quality coconut-shell carbon block filter turns tap water into cleaner, healthier drinking water. -Cleaner Water Straight from the Tap - Perfect for campers, RVs, apartments, and houses - Universal Parts for Easy Replacement: The replacement cartridge is 2.5"x10" standard-sized carbon block filter - Including filter housing with countertop stand, dispensing spout, diverter valve, tubing for installation, wrench, and manual.-This countertop water filtration system is NOT expected to eliminate TDS, instead it keeps healthy minerals in the water. If you are looking for a filter that lowers the TDS value, please consider our iSpring tankless under sink Reverse Osmosis (RO) system RO500 or countertop RO water filter system RCT600.