Kitchen Tap Water Purifier Home Activated Carbon Multilayer Water Filter These faucet filters are convenient because they provide filtered water directly from your tap, eliminating the need for a separate filtration pitcher or dispenser. However, they may have a limited capacity compared to larger, under-sink or whole-house filtration systems, and they might not remove all types of contaminants. It's essential to check the specifications of the filter to ensure it meets your water quality needs.