Replacement Under Sink Water Filters Comparison - September 2025

Last Updated - September 8, 2025

Our Score

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Model

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, 8K Gallons

Model

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

Model

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

Model

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

Model

Aquasana Replacement Filter Cartridges for 3-Stage Max Flow Claryum Under Sink Water Filtration System - Filters 99% Of Chlorine - 3 Count - AQ-5300+R

Model

GE SmartWater FXSVC Under Sink Water Filter, Replacement for Water Filtration System, Twice-Filtered Water, Reduces Sediment & Other Impurities from Water, Replace Every 6 Months, 2 Filters

Model

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

Brand

Waterdrop

Brand

Waterdrop

Brand

PUREPLUS

Brand

Aquasana

Brand

Reviews

24,276 reviews

Reviews

10,659 reviews

Reviews

8,328 reviews

Reviews

16,488 reviews

Reviews

3,978 reviews

Reviews

2,067 reviews

Reviews

5,256 reviews

Features

Easy installation

9.8

Easy installation

9.9

Easy installation

9.8

Easy installation

9.6

Easy installation

7.6

Easy installation

9.1

Easy installation

8.1

Worth the money

9.4

Worth the money

8.6

Worth the money

9.3

Worth the money

9.1

Worth the money

7.0

Worth the money

8.6

Worth the money

7.7

Flavor

9.6

Flavor

9.3

Flavor

9.6

Flavor

9.1

Flavor

8.6

Flavor

9.3

Flavor

8.6

Tech Specs

product dimensions

3.6 x 3.6 x 12.3 inches 2.87 Pounds

product dimensions

2.5D x 2.5W x 10H

product dimensions

3.6 x 3.6 x 10 inches

product dimensions

2.5 x 2.5 x 10 inches

product dimensions

9.5 x 2.2 x 9.5 inches

product dimensions

2D x 2W x 10H

product dimensions

9.75D x 9.75W x 2.63H

item weight

1.63 pounds

item weight

1.28 pounds

item weight

0.317 ounces

item weight

1 pounds

item weight

1.55 pounds

item weight

15.5 ounces

customer reviews

4.7 4.7 out of 5 stars 3, 553 ratings 4.7 out of 5 stars

customer reviews

4.7 4.7 out of 5 stars 2, 776 ratings 4.7 out of 5 stars

customer reviews

4.6 4.6 out of 5 stars 5, 496 ratings 4.6 out of 5 stars

customer reviews

4.1 4.1 out of 5 stars 1, 326 ratings 4.1 out of 5 stars

customer reviews

4.6 4.6 out of 5 stars 689 ratings 4.6 out of 5 stars

customer reviews

4.6 4.6 out of 5 stars 1, 752 ratings 4.6 out of 5 stars

material

Carbon Block

material

Plastic

material

Plastic

material

Lead

external testing certification

IAPMO Certified

external testing certification

NSF, IAPMO

external testing certification

ANSI, NSF

product benefits

2 Stage dual flow Water Filtration System using carbon block to remove impurities & sediment up to 300 gallons.

product benefits

Certified to NSF/ANSI 42 and 53

product benefits

Reduces lead, asbestos, chlorine-resistant cysts, mercury, MTBE, VOCs, and turbidity, improving the quality and taste of drinking water.

color

White, Yellow, Black

color

White

color

White and aqua

batteries included

Yes

batteries included

included components

Filter Cartridges 3

included components

2 Pack Under Sink Water Filter

included components

Water Filter

item package quantity

size

3 Count Pack of 1

size

2 Count Pack of 1

size

1 Count Pack of 1

style

Filter

style

FXSVC

style

FXUVC

batteries required

Review

Review

Review

Review

Review

Available On

Available On

Available On

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Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you

9.9
1

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, 8K Gallons

9.8 Easy installation

9.6 Flavor

9.4 worth the money

Why we love it

Easy installation in minutes.

Reduces harmful contaminants effectively.

Affordable filter replacements.
Main highlights

[Wide Application] The filtration system was created for residential and commercial usage, and it can be installed in your kitchen, bathroom, RV, or office to satisfy your daily water demands. This under cabinet water filter is the finest option for a leased property due to its stunning design and compact size. It is perfect for drinking, cooking, skincare, and cleaning. It is suitable for faucets with a FEMALE NPT thread of 1/2" or 3/8". Please get in touch with us prior to making a purchase if a female threaded connector is required to connect to your faucet.
[Solve Clogging Problem] By upgrading the filtration area, our filter now provides a 20X increase in dirt adhesion area, enhancing filtration capability while minimizing the risk of clogging.
[Innovative Design] Only a cold-water source should be used to power the filter. Its twist-and-lock construction and push-to-connect fittings enable installation in three minutes, three second replacement, and safety-assuring integration. This filter comes with a 3/8" line that connects directly to US sinks' standard 3/8" feed water valves. The system is connected to 1/2" and 3/8" cold water pipes and faucets with the use of the 3/8"-1/2" convertor fitting.
[Filter Replacement and Long Lifespan] This filter system may be upgraded with a UF filter or a MZ filter to meet your water needs. It is compatible with several filters with various functions. Each filter system has a maximum service life of 12 months or 8k gallons when used with municipal water, which is sufficient to cover the needs of an entire household. Before going on vacation, please Put the filters in separate sealed plastic bags, and store the bags in your refrigerator (NOT the freezer) to keep it fresh in 30 days.
[Deep Filtration and IAPMO Certified] Based on independent testing, this filter can efficiently reduces PFAS, PFOA/PFOS, large-particle contaminants such as rust, lead, chlorine, heavy metals, chemical impurities, and sand through thorough purification for clean drinking water. The filter is made of high BPA-free and lead-free materials. It also can successfully reduce chlorine, taste, and odor. This filter is certified by IAPMO against NSF/ANSI 372 Standard and NSF/ANSI 42 Standard. It can lower lead when tested by a third-party laboratory against NSF/ANSI 53 standards. Please use the "WD-10UA" search term to review the 42&372 certification on the IAPMO website.
[After Sales Assistance] Waterdrop Backs the WD-10UA's high-end technical performance with a comprehensive prorated performance service; should a quality issue arise with the filter, you can contact us.
TDS is not a professional way to measure the water quality. Essential Minerals, Calcium, Potassium, Sodium, Magnesium...These essential minerals are dissolved solids, PPM will not be dropping if you test with a TDS meter. Waterdrop undersink water filtration system is keeping all those minerals, but removes elements that are harmful to your body. Note: The activated carbon is made from natural coconut shells. Please confirm whether you are allergic to it.
Less than ＄25.99 per replacement filter WD-RF10(Search " B085G66JTZ "on Amazon), save over 50% of cost on subsequent use.
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9.8
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

9.9 Easy installation

9.3 Flavor

8.6 worth the money

Why we love it

Advanced filtration: Dual flow.

Compatible filters: GXK285JBL, GXK295JNN, etc.

NSF certified: Reduces toxins.
Main highlights

Twist and lock design: Simple design provides easy, tool-free, no-mess filter replacement. Feed Water Pressure (psi) - 35-125 psi. Feed Water Temperature - 33-100 F . Filter Capacity - 300.0 gal
Six-month filter life: Filter should be replaced every six months for best filtration results
Includes two filters: Filters fit GXK285JBL, GXK295JNN, GXSL55R, GXSV65R and GNSV70R filtration systems, plus Pfister Clarify & LOTA filtration faucets
IAMPO Certified - Reduces select pharmaceuticals, select VOCs, lead, chlorine taste and odor and other chemicals
Dual flow filtration: Water is filtered in parallel flow through advanced filtration filters
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9.7
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

9.8 Easy installation

9.6 Flavor

9.3 worth the money

Why we love it

1. Easy replacement: Twist lock design makes replacing in 3 seconds .

2. WQA certified: Premium materials certified against NSF/ANSI standards .

3. Multi stage filtration: Efficiently reduces heavy metals , impurities and sediment.
Main highlights

【Ultra-long service life】 When used with municipal water, each Undersink Water Filter has a maximum service life of 1 year or 11,000 gallons.[1]
【Quick replacement】The twist-and-lock design of the undersink filter ensures that you can replace it in 3 seconds without any tools, saving you time and effort.
【Innovative multistage filtration】The Waterdrop Undersink Water Filtration Replacement Filter uses innovative multistage filtration. And it can effectively reduces PFAS, PFOA/PFOS, heavy metals, chemical impurity, sediment and other large particles.[2] Enjoy healthy and pure water straight from your tap – no need to buy bottled water anymore!
【IAPMO certified filter】Made from premium BPA-free and lead-free materials, the under sink replacement filter is certified by IAPMO against NSF/ANSI 372 Standard, ensuring reliable use from inside to outside. Certified by IAPMO against NSF/ANSI 42 Standard, the water filter can effectively reduce chlorine, taste and odor. Tested by third party laboratory against NSF/ANSI 53 standard it can reduce lead.
【Compatible model】Compatible Replacement Filter for Waterdrop 10UA under sink water filter system (ASIN B083NPW1DN), 10UB under sink water filter system (ASIN B089CKQGL1). This undersink filter brings you purified water from your original faucet or your dedicated faucet. Get easy access to clean, safe, and healthy purified water with Waterdrop!
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Our ranking system

At BestChoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.
While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.

Features

Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.

Consumer Reviews

We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.

Popularity

Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.

Value for money

AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.

Replacement Under Sink Water Filters Comparison - September 2025

replacement under sink water filters comparison

Our Score

To Amazon

Model

Brand

Reviews

Features

Easy installation

Worth the money

Flavor

Tech Specs

product dimensions

item weight

customer reviews

material

external testing certification

product benefits

color

batteries included

included components

item package quantity

size

style

batteries required

Review

Available On

Our Top 3 Picks

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, 8K Gallons

Why we love it

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

Why we love it

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

Why we love it

Our ranking system

Features

Consumer Reviews

Popularity

Value for money

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iSpring F6K75 NSF Certified Replacement Under-Sink Water Filters, 6-Stage Reverse Osmosis RO Water Filtration Systems with Alkaline Mineral Filter, 6-months Replacement Supply Set, 6 Count (Pack of 1)

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