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10 Best replacement under sink water filters of 2026
Save up to 24% off
Best Choice1
iSpringiSpring F9K NSF Certified 1-Year Reverse Osmosis Water Filter, Alkaline Remineralization Filters for 6-Stage RO Systems, Without RO Membrane
13% Off9.9Exceptional
Our Rating
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Value for Money2
iSpringiSpring F9K NSF Certified 1-Year Reverse Osmosis Water Filter, Alkaline Remineralization Filters for 6-Stage RO Systems, Without RO Membrane
13% Off9.8Exceptional
Our Rating
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3
WaterdropWaterdrop RF10 Replacement Filter Cartridge for 10UA/10UB Under Sink Water Filter, Reduces PFAS, PFOA/PFOS, Lead, Chlorine, Bad Taste & Odor, NSF/ANSI 42 Certified, 11K Gallons High Capacity
16% Off9.7Exceptional
Our Rating
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4
PUREPLUS1 Micron 2.5" x 10" Whole House CTO Carbon Water Filter Cartridge Replacement for Under Sink Water Filter System, Dupont WFPFC8002, WFPFC9001, FXWTC, SCWH-5, WHEF-WHWC, WHCF-WHWC, AMZN-SCWH-5, 4Pack
16% Off Limited Time Deal9.6Exceptional
Our Rating
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5
PUREPLUS1 Micron 2.5" x 10" Whole House CTO Carbon Water Filter Cartridge Replacement for Under Sink Water Filter System, Dupont WFPFC8002, WFPFC9001, FXWTC, SCWH-5, WHEF-WHWC, WHCF-WHWC, AMZN-SCWH-5, 4Pack
24% Off Limited Time Deal9.5Excellent
Our Rating
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6
WaterdropWaterdrop 10UA Under Sink Water Filter System, Reduces PFAS, PFOA/PFOS, Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Direct Connect to Kitchen Faucet, NSF/ANSI 42 Certified, 1 Year
20% Off9.3Excellent
Our Rating
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7
WaterdropWaterdrop RF15 Replacement Filter Cartridge for 15UA/15UB/15UC Under Sink Water Filter, Reduces PFOA/PFOS, PFAS, Lead, Chlorine, Bad Taste & Odor, NSF/ANSI 42 Certified, 19K Gallons High Capacity
16% Off9.1Excellent
Our Rating
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8
WaterdropWaterdrop RF15-UF 0.01 Micron Replacement Filter Cartridge For 15UA/15UA-UF/15UB/15UB-UF/15UC/15UC-UF Under Sink Water Filter, Reduces Lead, Chlorine, Bad Taste & Odor, 19K Gallons High Capacity
17% Off8.9Very Good
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9
FiltreteFiltrete Advanced Under Sink Quick Change Water Filtration Filter 3US-PF01, for use with 3US-PS01 System
8.8Very Good
Our Rating
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10
GEGE Single Stage Drinking Water System Replacement Filter, Fits GX1S01R Under Sink Filtration System, Replace Every 6 Months, FXUVC
8.7Very Good
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