The iSpring WGB22B-PFKS whole house water filter system delivers comprehensive 2-stage filtration to provide safe, clean water throughout your home. Stage 1's FC25B-PF filter uses SGS-tested media to remove up to 99% of PFAS, including PFOA and PFOS. Stage 2 features the FG25B-KS filter, combining KDF and GAC media to reduce chlorine, lead, mercury, hydrogen sulfide, and other harmful chemicals. With a filtration capacity of up to 150,000 gallons and easy DIY installation, this system is built for lasting performance. Compatible with most standard home plumbing, it comes with individually sealed cartridges and U.S.-based customer support for added peace of mind.