PUR Plus Mineral Core Faucet Mount Water Filter Replacement, 6 Pack for 18-Month Supply, Compatible Water Filter for Sink Faucet PUR Filtration Systems (RF-9999)About this item Reduces 70 contaminants: PUR Plus faucet mount water filters reduce lead and other contaminants that may be in your water; PUR Plus faucet filters are certified to reduce 10X more contaminants than Britas leading pitcher filter* Compatible does not mean comparable: Be cautious of off brand filters; they are not tested or certified to filter like ours; PUR filters are the only certified option to reduce contaminants when used with a PUR