ISPRING WGB22B-PB+AHPF12MNPT16X2 2-Stage Whole House Lead Reducing Water Filtration System with 3/4 in. Push-Fit Hose ConnectorsThe WGB22B-PB whole house water filter system is an ideal point of entry filtration system for cleaning up well water. Unlike point of use systems that are installed to supply water to a specific faucet, the WGB22B-PB whole house water filtration system filters your water from the source. This means water from every output in your home will have passed through the two filtration stages of the WGB22B-PB. The first stage of the WGB22B-PB houses a 5-micron CTO coconut shell carbon block filter. Block carbon is more effective than other forms of carbon in that it is finely ground carbon packed into a solidified block. This means it has a higher density than other types of carbon filters and is therefore more effective in removing targeted contaminants. The carbon block filter knocks out bad tastes and odors, removes up to 99% of chlorine from the water, and is highly effective on industrial chemicals. The second stage of the WGB22B-PB whole house water filter houses a lead reducing filter. The FCRC25B lead reducing filter is only included with the WGB22B-PB, as it is not needed for most municipal water supplies that the WGB22B model targets.