Best Replacement Under Sink Water Filters 2025

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Last Updated - 09/06/2025

Best Choice

01

FRIZZLIFE

Frizzlife Certified Undersink Water Filter System with Brushed Nickel Tap 3 Stage 0.5 Micron High Precision Removes 99.99% Lead, Chlorine, Chloramine, Fluoride, Odour

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9.9

Exceptional

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Save money and environmentally friendly: FRIZZLIFE SP99 water filter systems are designed with a concept of comfort, cost-effective and environmentally friendly. When replacing the filters, you don't have to throw away the entire plastic housing, just the core filters inside. Choose Frizzlife to save more waste for the earth, and enjoy the great water in a more economical and greener way. Search replacement filters: M3005 (ASIN#B085ZSC5P8).
Premium filtration performance: With 0.5 μm cleaning accuracy, almost 10 times higher than other brands, SP99 composite filter candles under the counter water filter consist of more than 6 layers of filter materials that effectively remove over 99% of impurities (such as dust, dirt, lead, chlorine, chloramine, fluoride, heavy metals and VOC, etc.) from tap water, while leaving all beneficial minerals.
Fully upgraded version with support: The complete system has been upgraded, with stronger housings and bottom caps and an integrated water board that can withstand water pressure of up to 600 psi. A pressure regulator is added as a double insurance. No leaks or cracks. The compact design of the system can save up to 50% space for your cabinet under the sink.
Fully certified system and sensitive tap: The FRIZZLIFE SP99 water filter system under the sink is rigorously tested and certified against NSF/AISI 42 and 53 by the IAPMO for material safety, structural integrity, flow rate and filtration efficiency in the removal of chlorine, but not limited to chlorine, particle class, lead and cysts. A delicate, lead-free faucet with brushed nickel finish is included.
Fast water flow & DIY-installation: Tested flow rate: > 1.5 GPM at 60 PSI. Get instant access to fresh water from your tap. You can complete the installation within 15 minutes after detailed video instructions. No plumber required. With the twist-in design, replacement is super easy even for the elderly.

129,99 €
02

Waterdrop

Waterdrop TSA Under-Sink Water Filter System, 3-Stage 0.5 Micron Water Filter Drinking Water, NSF/ANSI 42 Certified, Removes 99.99% Lead, Chlorine, Chloramine, Fluoride, Odor, Direct Connection

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9.6

Exceptional

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【NO LEAKING OR CRACKING WITH HIGH PRECISION TECHNOLOGY 】 The under-sink water filter is made of durable materials with an In addition, the aging resistant and frost-proof materials make the system twice as thick. The under-sink water filtration system for kitchen also passed a burst pressure of 400 psi, 100,000+ pulse tests at 150 psi and static tests at 300 psi. These tests prove that the robust, integral design eliminates the worries of cracked cases and leaks.
【Lifespan of up to 18 months】: The three under-sink water filters have a service life of 6 months, 8-12 months or 12-18 months.
【3min installation, 3s replacement】: This under sink water filter system works perfectly with 3/8" and 1/2" cold water pipes. The under-sink water filter system is a simple DIY. Thanks to the innovative push-to-connect connectors, installation of the water filter system under the sink takes less than 3 minutes. In addition, you can replace any filter in just 3 seconds thanks to the twist cap.
More filters, better taste: This under-sink water filter system comes with 3 filters and can realise 8-stage deep filtration to reduce PFAS, PFOA/PFOS, residual chlorine, fluorides, heavy metals, mud, rust, cysts, etc. Its KDF materials can effectively reduce heavy metals. Its resin reduces fluoride. The CT filter has obtained IAPMO certification to reduce residual chlorine and improve taste, so every drop is pure and healthy.
If you need the replacement filter 3 for the WD-TSB or WD-TSA Undersink Water Filter System, please search for WD-10PP, WD-10GC and WD-10CT
Good service: with a stale water flow, this under-sink water filter provides all-round protection for drinking or use. The charcoal block is made from natural coconut shells. Please confirm if you are allergic to it. Note: This under-sink water filtration system can retain minerals but does NOT reduce TDS value.

129,99 €
03

FRIZZLIFE

Frizzlife SW20 Under Sink Water Filter System, NSF/ANSI 53&42 Certified, 0.5 Micron Reduces 99.99% Lead, Chlorine, Bad Taste & Odor, Direct Connect Water Filter, 3 Year High Capacity

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9.5

Excellent

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【3 Seconds Replacement & 4X Longer Life】Each filter cartridge is able to provide clean and safe drinking water for 24-36 months, the filter life is almost 4x longer than most carbon water filters on the market. Thanks to the advanced auto shut-off design, the replacement work requires only a simple twist and can be finished in no time at all without cutting off the water supply. Search "FRIZZLIFE PLC20" for replacement filters.
【3 MINUTES INSTALLATION & STURDY CONSTRUCTION】Compatible with standard US kitchen sink (both 3/8" NPT and 1/2"). The system comes with a 3/8" braided material inlet hose and should be connected directly to the existing faucet hose. The installation process is DIY friendly and takes only 3 minutes! Unlike other brands use cheap and fragile plastic fittings, FRIZZLIFE SW20 water filtration uses durable, lead-free brass fittings. No more cracking or leaking nightmare
Save money and eco choice: Instead of throwing away the entire plastic housing, FRIZZLIFE SW20 only needs to replace the inner core filter cartridge, which remarkably reduces plastic waste and reduces future replacement costs. In addition, the system does not produce wastewater. Save your water costs and make drinking water much cheaper. This is indeed a cost-effective water solution in the long run.
MULTI-LAYER FILTRATION Equipped with innovative multi-stage filtration technology, FRIZZLIFE SW20 extrudes under sink water filtration system NSF 42 & 53 certified filter elements, combining sediment filter and coconut carbon block filter into one composite filter with 0.5 micron filtration accuracy. It can effectively reduce chlorine, lead, fluoride, heavy metals, VOCs, bad taste and odor and other harmful impurities from water.
Fast water flow and versatile: The flow rate of SW20 under counter water filter system can reach up to 2 gallons per minute at 60 psi. Fast and stable water flow ensures a good development of the system for both domestic and commercial use. The under-sink water filtration can be installed in your kitchen, office, bathroom, RV and much more. With the help of the IMC-2 Ice Cube Maker Set (B07RBMLR26), it can simultaneously supply purified water for your kitchen sink and refrigerator/ice maker.

99,99 €
04

AQUA CREST

AQUA CREST 3US-PF01 Under Sink Water Filter, NSF 42 Certified Replacement for Advanced 3US-PF01, 3US-MAX-F01H, 3US-PF01H, Delta RP78702, Manitowoc K-00337, K-00338 Water Filter (Pack of 1)

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Stable Flow Rate:Provide you with stable filtered water without obvious pressure drop. Filtration is efficient enough to give you the best drinking experience. Only connected to the cold water valve. This filter does not reduce TDS
Safe material: uses food-safe plastic housing. It can prevent bursting to provide you with a satisfactory and safe experience. Specially selected premium materials are fully certified by the IAPMO to NSF/ANSI 372 standard.
New upgrade and long service life: After advanced upgrade, the model number is changed from AQU-3US-PF01 to AQU-WF00. Enjoy fresh water by replacing your filter every 6 months or 15,000 gallons. Depending on what comes first, varies depending on water quality.
NSF/ANSI certified performance: NSF/ANSI 42 certified. The highly efficient filtration is designed to provide you with an excellent water experience.
Compatible with the following models: 3M Filtrete 3US-PF01, 3US-MAX-F01, 3US-PF01H, 3US-MAX-F01H, Fits Filtrete Maximum Filtration, 3US-PS01, 3US-MAX-S01 systems; Fits 3M HF25, HF25-S, HF25-MS; Fits Delta RP787000 . 2, Manitoblau WOC K-00337, K-00338; Fits AR10000 water filter systems. Please note that the compatible model numbers of the products are quite similar.

38,95 €
Value for Money

05

Waterdrop

Waterdrop 10UA Under-Sink Water Filter System, Direct Connect to Kitchen Tap, 30,000 Litres High Chlorine Reduction Capacity, USA Tech

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24% Off
9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Ultra-long service life: when used with municipal water, each filter has a maximum service life of 12 months or 30,000 litres. This product does not reduce the TDS of water. If you want to reduce the TDS, please choose the Waterdrop reverse osmosis system.
Quick and stable water supply delivers pure and fresh water. The tested full flow rate is 3.0 litres/minute at 60 psi. Designed for household and commercial use, the undersink water filtration system can be installed in your kitchen, bathroom, RV or office to meet your daily water needs.
NSF-certified film: Special selected premium materials are lead-free, which is fully certified by the IAPMO against NSF 372 standard. Activated carbon block and other extended filter media ensure efficient and safe filtration. Effectively filter filtering hygiene. With NSF 42 standards, it is effective in reducing chlorine, taste and odour. The BPA-free, lead-free material ensures reliable use from the inside out.
Easy to use: the Waterdrop Direct Connect undersink water filtration system uses innovative multi-stage filtration. And it can effectively reduce chlorine, heavy metals, chemical pollutants, sediment and other large particles. Enjoy healthy and pure water directly from your tap - you no longer have to buy fluffy water!
Easy to install: The system should only be connected to a cold water supply. The entire installation process takes less than 3 minutes. The twist and lock design ensures you can replace the filter in 3 seconds. It includes a 3/8 inch hose with a direct connection that adapts to standard 3/8 inch feed water valves.

52,79 € 69,99 €(24% Off off)
06

Waterdrop

Waterdrop WD-RF10 Water Filter, NSF/ANSI 42 Certified, 30,000 Litre High Capacity, Replacement for Watertrop Undersink Water Filtration System

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Ultra-long service life: when used with urban water, each sub-sink water filter has a maximum service life of 1 year or 30,000 litres. [1]
Quick installation: the twist-and-lock design of the lower sink filter ensures that you can replace it in 3 seconds without tools, and saves time and effort.
NSF-certified film: Special selected premium materials are lead-free, which is fully certified by the IAPMO against NSF 372 standard. Activated carbon block and other extended filter media ensure efficient and safe filtration. effectively filter filtering hygiene. With NSF 42 standards, it is effective in reducing chlorine, taste and odour. The BPA-free, lead-free material ensures reliable use from the inside out.
Easy to use: the under-sink water filter is designed for the Waterdrop under-sink water filter system (WD-UA series). This under-sink water filter is compatible with all three connection methods and provides you with purified water from your original tap, special tap or fridge. Erhalten Sie mit Waterdrop einfachen Zugang zu sauberem, sicheres und gesundem gereinigtem Wasser!
Easy to use: the Waterdrop sub-sink water filtration replacement filter uses innovative multi-stage filtration. And it can effectively reduce heavy metals, chemical pollutants, sediments and other large particles. [2] Enjoy healthy and pure water directly from your tap - you no longer have to buy fluffy water!

32,99 €
07

FRIZZLIFE

Frizzlife FK99 Under Sink Water Filter System, NSF/ANSI 53&42 Certified, Removes 99.99% Chlorine, Lead, Bad Taste & Odor, Direct Connect, 0.5 Micron, Drinking Water Filter

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8.8

Very Good

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Ultra long filter life and environmentally friendly: the inner filter of the under-sink water filter system has an ultra-high filtration capacity of 10,000 gallons of water or a recommended replacement time of 12 months. You only need to change the internal filter without throwing away the entire plastic housing. Search "PLC10" for the replacement filter. The rated flow rate is 7.56 L/min at 60 psi. Enjoy fresh and clean water from your tap!
Super filtration performance: the Frizzlife water filter for the sink has advanced filter technology in which NSF 42&53 certified filter components and coconut carbon are pressed into a 0.5 micron block filter. The composite filter can remove 99% of harmful impurities from the water (including chlorine, lead, other heavy metals, VOCs, bad taste and odour), while preserving beneficial minerals.
Stable and strong: the complete water filter system has passed the 100,000 times water impact test (600 psi) for system integrity and pressure resistance. Unlike other flimsy systems with plastic connectors, the FK99 water filtration system uses lead-free brass connectors. No worries about cracks or leaks! The water filter head is also equipped with an automatic shutdown. You don't need to turn off the water supply when changing the filter.
Multiple use: the water purification system can be installed in different places, e.g. in the kitchen, office, bathroom and caravan. No drill hole is required for an additional tap. So it is also perfect for a rented apartment. The dedicated 24/7 customer service offers a maximum of 18 months warranty on the water purifier. For cold water only.
Easy DIY installation: compatible with EU kitchen sinks (3/8 inch or 1/2 inch). The filter for kitchen sink can be connected directly to your existing faucet. It is super easy to install within 5 minutes of step-by-step user manual and installation video. More ergonomic and easier installation, but fewer leak points!

84,99 €
08

Waterdrop

Waterdrop AS13 Under-Sink Water Filter System 30,000 Litres, NSF/ANSI 42 Certified, 5+1 Level Stainless Steel Under Sink Water Filter Drinking Water, Reduce Lead, Chlorine, Bad Taste

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

[Safe Materials] The under-sink water filtration system is made of food grade stainless steel, which is rust-proof, durable and leak-proof. The system preserves the purity of the water while providing long-lasting reliability.
[NSF/ANSI Certified] The under-sink water filter is NSF/ANSI 42 certified to reduce chlorine, taste and odor, and NSF/ANSI 372 certified because it contains lead-free materials. It can also reduce PFAS, PFOA/PFOS. Every drop of water is clean and safe.
[Long service life] Get pure, filtered water for one year with the 12-month life of our under-sink filter! No more constant changes, just constant peace of mind.
[Healthy Hydration] Our 5+1-stage advanced filter technology reduces pollutants and adds important minerals. Drink with confidence, provide your body with nutrients and live a healthier lifestyle. (NOTE: This system does not lower the TDS value as it adds useful minerals to the water).
[Damage-free Installation] Drilling and compatibility problems are a thing of the past. The simple plug and twist design makes it ideal for renters. Plus, it guarantees a hassle-free, quick installation of this under-sink water filtration system.
Less than €39.99 per replacement filter (Search "WD-WF13" on Amazon), save over 50% on cost next use.

89,99 €
09

Waterdrop

Waterdrop WD-CFF-01 Replacement Filter, Water Filter, Faucet, 5-Stage Tap Water Filter, Longer Filter Life, Reduces Heavy Metals, Bad Taste and Up to 99% Chlorine, Pack of 1

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8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

When connected to municipal tap water, the service life can be up to 12 months or 8,000 gallons (30,283 litres). (This may vary depending on water conditions) By using advanced filtration technology, the water flow can reach up to 1.6 gallons per minute.
Waterdrop WD-CTF-01 can be part of the solution by replacing 50,000 plastic water bottles. Choose our planet over plastic.
WD-CTF-01 Tap Water Filter System
Add minerals such as calcium, magnesium and potassium. All this benefits from your health. (Note: TDS levels increase due to minerals added in water.)
5-stage filtration system can effectively reduce impurities commonly found in tap water, such as colloid, sediment, chlorine. It can also reduce limescale, heavy metals, hydrogen sulfide, fluorine and provide safe, tasty and fresh drinking water.

34,99 €
10

MOAZIFI

9 Piece Water Filter Tap Set, 3 Pieces 360° Tap Filter + 3 Pieces Cotton Filter Element + 2 Pieces Universal Interface, Tap Filter for Drinking Water, for Home, Bathroom, Kitchen, Sink

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8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Widely applicable: this 360° rotating water filter tap is suitable for kitchens, sinks, bathrooms at home and more. It can effectively filter residual chlorine, impurities and micro-organisms in the water to ensure a fresh and healthy water quality
Safe material: the transparent tap filter is made of environmentally friendly and healthy materials. The filter element made of PP cotton is harmless and has an excellent filter effect, making it safe and reliable to use. If the cartridge turns yellow and black, please replace it immediately
Quantity size: 3 x 360° water filter tap, equipped with 3 x universal interfaces and 3 x PP cotton filters. In addition, we also offer 3 conversions and 3 pieces leak-proof seals, suitable for bathrooms, kitchens, sinks and other places
Exquisite design: this 360° rotating filter tap has a transparent design, so you can observe and replace the filter element at any time, the sealing ring used made of soft rubber has a higher density and less leakage, so you can easily enjoy pure water
Easy to install: water filter for faucet suitable for 99% round standard kitchen faucets, with M22 male thread and M24 female thread. In addition, the valve core has universal connectors and can be easily installed in most taps (please pay attention to the tap size when purchasing)

9,99 €