A water filter is a device designed to remove impurities and contaminants from water, making it safer and more pleasant to drink. It works by using various filtration methods, such as activated carbon, reverse osmosis, or ceramic filters, to trap particles, chemicals, and microorganisms. Many households use water filters to improve the taste and quality of their tap water. Water filters come in different forms, including pitcher filters, faucet-mounted filters, and under-sink systems. They are often used in conjunction with water purification methods to ensure that the water is clean and safe for consumption. Regular maintenance and replacement of filter cartridges are essential for optimal performance.