A faucet filter is a device attached to a kitchen or bathroom faucet that helps improve the quality of drinking water. It works by removing impurities, such as chlorine, lead, and sediment, making the water safer and better tasting. Faucet filters are typically easy to install and can be replaced when needed. These filters come in various types, including activated carbon and reverse osmosis models. Many faucet filters are designed to allow water to flow freely while filtering, ensuring that users can access clean water without significant changes to their daily routine.