GE water filter has NSF certifications 42 and 53; it reduces lead, cysts and chlorine taste and odor. Replace every 6 months, or more often if water flow slows noticeably. TFX28PPZCAA , ZFSB27DABSS, TFX25PPZBWW, ZISP480DKCSS, TFX22PPZBBB, TFX28PBBAWW, TFX30PPZBAA, TFS22PPBCBS, ZISS480NHBSS, 36359479990 9905, 9951, 9970, 9991, FXRC, GWF, GWF01, GWF06, GWFA, GWFS, HWF, HXRT, MWF, MWFA, MWFP, MWFPA, WR02M3552, WR2M3552, WR97X10006, WR97X10018 |