Waterdrop 16000 Gal. 0.01 m Under-sink Water Filtration System employs an advanced UF membrane, which effectively reduces bacteria, microorganisms, and any contaminants larger than 0.01 m. Activated carbon block and other advanced filter media ensure efficient and safe filtration. Specially selected premium materials are lead-free. The BPA-free, lead-free material ensures more reliable use from the inside out. The advanced 4-stage filtration also effectively reduces chlorine, taste and odor, sediment, rust, and other heavy metals, which is tested by the third-party laboratory. With innovative push-to-connect fittings, the entire installation process takes less than 3-minutes. The twist-and-lock design ensures that you can replace the filter in 3-seconds without any tools. The extended filter life ensures the filtration capacity of 16,000 Gal., this under sink water filter system delivers safe filtered water all day long. Information is based on carbon block. Information is based on South African Journal of Chemical Engineering, Volume 28, April 2019, Pages 39-45. The service life mentioned above is subject to chlorine reduction. Actual result varies according to the local water quality.