Filtration System certified with NSF/ANSI Std. 42 & 53
Under-the-sink Installation; 3M™ 3in1 Faucet-J is certified to NSF/ANSI Standard 61 (Drinking Water System Components-Health Effects)
Change the cartridge when the water flow becomes slow.
Suggest to change cartridge every 6 to 9 months. Cartridge life varies by water consumption and water quality but the maximum life is 12 months only.