PUR is a brand known for its water filtration products, including pitchers, faucet-mounted filters, and replacement cartridges. These products are designed to reduce contaminants in drinking water, such as lead, chlorine, and other impurities, improving taste and safety. The technology behind PUR filters typically involves activated carbon and ion exchange, which work together to trap harmful substances while allowing clean water to pass through. Many PUR products are certified by organizations like the NSF International, ensuring they meet specific safety and performance standards for water purification.