Waterdrop Under-sink Water Filtration System with 3 filters uses 8-stage deep filtration, which effectively reduces silt, rust, cyst, residual chlorine, heavy metals, etc. The natural carbon block and KDF filter prevents pollutants from accumulating and improves water taste furthermore. Changing under counter water filters frequently can burn a hole in your wallet. The 3 filters have a lifespan of 6 months, 8-months tov 12-months and 12-months to 18-months, respectively. 1 With the long service life and reduced replace frequency, you don’t have to spend much money on the maintenance. You never want to be bothered by spending forever on assembly. Installation takes less than 3-minuts with easy push-to-connect fittings. No leaking or cracking with highly precised technique: The under counter water filter adopts strong materials with an upgraded design. In addition, the age-resistant and freeze-resistant materials make the system twice thicker. The under counter water filter system for kitchen has also passed 400 psi burst pressure, 100,000 plus pulse tests at 150 psi and static tests at 300 psi. These tests prove that the durable integral design clears up worries about cracking cases and leaking issue. Replacement takes only 3s with the twist-lock design. Reference: 1x The service life mentioned above is subject to chlorine reduction. Actual result varies according to the local water quality.