The C-LC 3M Aqua-Pure Under Sink Dedicated Faucet Replacement Water Filter Cartridge is designed to reduce impurities such as chlorine taste and odor, hard scale, lead, sediment and harmful cysts, the C-LC 3M Aqua-Pure undersink water filter cartridge ensures you enjoy great tasting, high quality water from your tap. Under sink water filtration systems are great solutions to provide cleaner, clearer and great tasting drinking and cooking water by reducing a wide range of contaminants that may be present in the local water. Proudly made in the USA, it installs with an easy 1/4 twist to remove the old and replace with the new.