9 Best replacement under sink water filters of 2026

Save up to 20% off

1

GE
GE Under Sink Water Filter Replacement, Dual Flow, Reduces Sediment, Rust & Other Impurities from Water, Fits GXK255TBN Under Sink Filtration System, Replace Every 6 Months, FQK2J, 2 Filters
Main highlights

Key Features
Dual flow filtration, easy twist and lock design, IAMPO Certified, reduces harmful chemicals, six-month lifespan.

Ideal Use Cases
Perfect for households with GXK285JBL, GXK295JNN, GXSL55R, GXSV65R, GNSV70R systems, and those prioritizing water purity and taste.

Customer Praise
Most reviews highlight the ease of installation and noticeable improvement in water taste and quality as top benefits.
9.9

Exceptional

Our Rating

9.9
Easy installation

9.1
Flavor

8.0
worth the money
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2

GE
GE Under Sink Water Filter Replacement, Dual Flow, Reduces Sediment, Rust & Other Impurities from Water, Fits GXK255TBN Under Sink Filtration System, Replace Every 6 Months, FQK2J, 2 Filters

12% Off
Main highlights

Key Features
Dual flow filtration, easy twist and lock design, IAMPO Certified, reduces harmful chemicals, six-month lifespan.

Ideal Use Cases
Perfect for households with GXK285JBL, GXK295JNN, GXSL55R, GXSV65R, GNSV70R systems, and those prioritizing water purity and taste.

Customer Praise
Most reviews highlight the ease of installation and noticeable improvement in water taste and quality as top benefits.
9.8

Exceptional

Our Rating

9.9
Easy installation

9.1
Flavor

8.0
worth the money
3

Waterdrop
Waterdrop 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% Off
Main highlights

Key Features
Ultra-long service life of 1 year/11,000 gallons, innovative multistage filtration, IAPMO certified, quick replacement design.

Ideal Use Cases
Perfect for households using municipal water seeking to reduce PFAS, PFOA/PFOS, heavy metals, chlorine, and improve taste and odor.

Customer Praise
Most reviews highlight the ease of filter replacement, significant improvement in water taste, and the peace of mind from reduced contaminants.
9.7

Exceptional

Our Rating

9.7
Easy installation

9.5
Flavor

9.1
worth the money
4

PUREPLUS
1 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
Main highlights

Certified for Safety and Quality
Meets EC1935-2004, Water Mark, TUV, ROHS, REACH, BPA FREE standards ensuring safe water filtration.

Best for Tap Water Filtration
Ideal for filtering chlorine, sand, rust, and sediment in tap water.

Enhanced Water Taste
Customers praise the improved taste of water due to effective carbon filtration.
9.6

Exceptional

Our Rating

9.5
Easy installation

8.9
worth the money

8.7
Flavor
5

Waterdrop
Waterdrop 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% Off
Main highlights

Efficient Contaminant Reduction
Reduces PFAS, PFOA/PFOS, lead, chlorine, and odors, ensuring safe drinking water.

Versatile Installation Options
Ideal for kitchens, bathrooms, RVs, and offices; fits standard US sinks.

Simple Installation Process
Users praise its easy, quick installation and clear instructions.
Key specs
- Installation Type:Under-sink
- Maintenance Frequency:12 months or 8k gallons
- Dimensions:3.6 x 3.6 x 12.3 inches
- Contaminants Removed:PFAS, PFOA/PFOS, rust, lead
- Filtration Stages:N/A
9.4

Excellent

Our Rating

9.7
Easy installation

9.7
Sheerness

9.5
Instruction
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6

GE
GE Single Stage Drinking Water System Replacement Filter, Fits GX1S01R Under Sink Filtration System, Replace Every 6 Months, FXUVC
Main highlights

Premium Filtration Benefits
Certified to reduce lead, asbestos, and chlorine-resistant cysts for safer water.

Ideal for Home Use
Perfect for households needing reliable, single-stage water filtration.

Customer Praised Feature
Users appreciate its compatibility with various filtration systems.
9.3

Excellent

Our Rating
7

GE
GE Single Stage Drinking Water System Replacement Filter, Fits GX1S01R Under Sink Filtration System, Replace Every 6 Months, FXUVC
Main highlights

Premium Filtration Benefits
Certified to reduce lead, asbestos, and chlorine-resistant cysts for safer water.

Ideal for Home Use
Perfect for households needing reliable, single-stage water filtration.

Customer Praised Feature
Users appreciate its compatibility with various filtration systems.
9.2

Excellent

Our Rating
8

Waterdrop

Waterdrop 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% Off
9.0

Excellent

Our Rating

9.9
Easy installation

9.5
Flavor

9.3
worth the money
9

Waterdrop

Waterdrop 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% Off
8.8

Very Good

Our Rating

9.9
Easy installation

9.5
Flavor

9.3
worth the money

9 Best replacement under sink water filters of 2026

1

GE Under Sink Water Filter Replacement, Dual Flow, Reduces Sediment, Rust & Other Impurities from Water, Fits GXK255TBN Under Sink Filtration System, Replace Every 6 Months, FQK2J, 2 Filters

9.9

9.1

8.0

How do we rank?

How do we rank?

Analyzing top stores

2

GE Under Sink Water Filter Replacement, Dual Flow, Reduces Sediment, Rust & Other Impurities from Water, Fits GXK255TBN Under Sink Filtration System, Replace Every 6 Months, FQK2J, 2 Filters

9.9

9.1

8.0

3

Waterdrop 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

9.7

9.5

9.1

4

1 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

9.5

8.9

8.7

5

Waterdrop 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

9.7

9.7

9.5

6

GE Single Stage Drinking Water System Replacement Filter, Fits GX1S01R Under Sink Filtration System, Replace Every 6 Months, FXUVC

7

GE Single Stage Drinking Water System Replacement Filter, Fits GX1S01R Under Sink Filtration System, Replace Every 6 Months, FXUVC

8

Waterdrop 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

9.9

9.5

9.3

9

Waterdrop 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

9.9

9.5

9.3

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