Step1 Step 2 Step 3 Step 4 This filter cartridge is for iSpring CT10 countertop drinking water filtration system. The filter combines activated carbon, dual layered sediment filtration, KDF media, and calcite to deliver the best drinking water possible from a single convenient cartridge. The CT10 effectively reduces chlorine, lead, arsenic, sediment, and many other contaminants. Installation and removal of the filter is quick and easy, making it a great choice for permanent and short term uses alike. The filter comes with a 1-year manufacturer and lifetime support from iSpring in Atlanta, GA at (678) 261-7611. If you are in the market for a simple but effective drinking water solution, the CT10 makes an excellent choice.