Rank Product Name Score
1 Express Water Reverse Osmosis Water Filtration System – 5 Stage RO Water Filter System with Faucet and Tank – Under Sink Water Filter – Plus 4 Replacement Filters – 100 GPD Express Water Reverse Osmosis Water Filtration System – 5 Stage RO Water Filter System with Faucet and Tank – Under Sink Water Filter – Plus 4 Replacement Filters – 100 GPD
Express Water Incorporated
9.5 GET ON AMAZON
2 Metpure Versatile Under Sink Water Filter System | 2 Stage Quick Easy Change Twist Filtration System | Water Purifier For Clean Drinking Water & Simple Set Up | Removes Chlorine Bad Taste & Odor Metpure Versatile Under Sink Water Filter System | 2 Stage Quick Easy Change Twist Filtration System | Water Purifier For Clean Drinking Water & Simple Set Up | Removes Chlorine Bad Taste & Odor
Metpure
9.3 GET ON AMAZON
3 Premium Under Sink Direct Connect One Water Filtration System with 100% Lead-Free Chrome Faucet -Removes Chlorine, Bad Tastes, Odors and 99.99% of Contaminants (One Stage of Filtration) Premium Under Sink Direct Connect One Water Filtration System with 100% Lead-Free Chrome Faucet -Removes Chlorine, Bad Tastes, Odors and 99.99% of Contaminants (One Stage of Filtration)
Ronaqua
9.0 GET ON AMAZON
4 Aquasana 3-Stage Under Sink Water Filter System - Kitchen Counter Claryum Filtration - Filters 99% Of Chloramine - Oil-Rubbed Bronze - AQ-5300 Aquasana 3-Stage Under Sink Water Filter System – Kitchen Counter Claryum Filtration – Filters 99% Of Chloramine – Oil-Rubbed Bronze – AQ-5300
Aquasana
8.9 GET ON AMAZON
5 Woder WD-S-5K-R Replacement Cartridge To All Woder WD-5K-S Types (Gen3 Models) and WD-FRM-5K Dual Stage Models (As Stage2). WQA Certified. Made in the USA. Woder WD-S-5K-R Replacement Cartridge To All Woder WD-5K-S Types (Gen3 Models) and WD-FRM-5K Dual Stage Models (As Stage2). WQA Certified. Made in the USA.
Woder
8.9 GET ON AMAZON
6 Woder WD-FRM-8K-R (5K-12") Replacement Cartridge To All Woder WD-FRM-8K Dual Stage FRM Fluoride Removal Water Filters (As Stage1) – Made in the USA Woder WD-FRM-8K-R (5K-12″) Replacement Cartridge To All Woder WD-FRM-8K Dual Stage FRM Fluoride Removal Water Filters (As Stage1) – Made in the USA
Woder
8.6 GET ON AMAZON
7 Aquasana OptimH2O Reverse Osmosis Under Sink Water Filter System - Filters 95% Of Fluoride - Kitchen Counter Faucet Filtration - Chrome - AQ-RO-3.55 Aquasana OptimH2O Reverse Osmosis Under Sink Water Filter System – Filters 95% Of Fluoride – Kitchen Counter Faucet Filtration – Chrome – AQ-RO-3.55
Aquasana Inc.
8.3 GET ON AMAZON
8 Woder WD-4K Ultra High Capacity Under Sink Water Filter with Direct Connect Fittings - WQA Certified 4000 Gallons – Removes Chlorine, Lead, Chromium 6, Heavy Metals, Odors/Contaminants - US Made Woder WD-4K Ultra High Capacity Under Sink Water Filter with Direct Connect Fittings – WQA Certified 4000 Gallons – Removes Chlorine, Lead, Chromium 6, Heavy Metals, Odors/Contaminants – US Made
Woder
7.9 GET ON AMAZON
9 Woder WD-FRM-5K-DC Fluoride Removal Water Filter With Direct Connect Under Sink Fittings – Made in the USA – Removes Chlorine, Lead, Heavy Metals and Odors Woder WD-FRM-5K-DC Fluoride Removal Water Filter With Direct Connect Under Sink Fittings – Made in the USA – Removes Chlorine, Lead, Heavy Metals and Odors
Woder
7.6 GET ON AMAZON
10 Woder WD-FRM-5K-JG-1/4 Fluoride Removal Refrigerator Water Filter/Ice Maker Filter – Ultra High Capacity 5000gal - USA Made - With 1/4" Built-in John Guest Fittings For Unbraided ¼” PVC or 1/8” PEX Woder WD-FRM-5K-JG-1/4 Fluoride Removal Refrigerator Water Filter/Ice Maker Filter – Ultra High Capacity 5000gal – USA Made – With 1/4″ Built-in John Guest Fittings For Unbraided ¼” PVC or 1/8” PEX
Woder
7.5 GET ON AMAZON

Express Water Reverse Osmosis Water Filtration System – 5 Stage RO Water Filter System with Faucet and Tank – Under Sink Water Filter – Plus 4 Replacement Filters – 100 GPD

Express Water Reverse Osmosis Water Filtration System – 5 Stage RO Water Filter System with Faucet and Tank – Under Sink Water Filter – Plus 4 Replacement Filters – 100 GPD

    Features:

  • Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system filtering up to 99.99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, and more.
  • Water Purification System: Drink the healthiest water on Earth. All our water filters are specially engineered to work together, producing the safest and best tasting water you’ll ever drink
  • Under Sink Water Filter: Don’t waste money on professional installation. Express Water’s quick and easy-to-understand design means you can install and understand everything about your new water filtration system
  • Quality Guaranteed: Rest easy with our 1-year warranty on all Express Water Reverse Osmosis Water Systems
  • Under Sink Water Filter System: No need to mess with refilling or activating your water filter, Express Water’s water filtration systems automatically fill your water tank with high quality drinking water
  • Leak Detection: Each under sink water filter includes an emergency leak stop detector that shuts off water flow when it detects unwelcomed moisture
  • Customizable RO Water Filter System: Express Water home water filtration systems are fully upgradable and customizable with quick connecting fittings. Try additional filtration attachments including UV Water Filter, Alkaline Water Filter, Deionization Water Filter, and more
  • On Demand Support: Support from experts who can answer any of your questions about your new water filter

Metpure Versatile Under Sink Water Filter System | 2 Stage Quick Easy Change Twist Filtration System | Water Purifier For Clean Drinking Water & Simple Set Up | Removes Chlorine Bad Taste & Odor

Metpure Versatile Under Sink Water Filter System | 2 Stage Quick Easy Change Twist Filtration System | Water Purifier For Clean Drinking Water & Simple Set Up | Removes Chlorine Bad Taste & Odor

    Features:

  • 👍 HIGH QUALITY: Our premium under the counter water filtration system is designed from high quality components with the sole purpose of giving you perfect water day in and day out.
  • 👍 EFFECTIVE FILTRATION W/ MINERAL RETAINMENT: The 2-stage purification system packs powerful water filtration properties such as removal of sediment, sand, lead, chlorine, odor & taste, cyst, and VOCs, all the while retaining beneficial minerals such as potassium, magnesium, and calcium to provide you healthy drinking water in every cup.
  • 👍 COMPACT DESIGN AND ALL INCLUDED COMPONENTS: No storage tank required, this unit is designed to save space. The system can be mounted on any surface and only requires the space of a shoe box. Plus, this system comes with all installation components such as brushed nickel spigot, universal shut-off valve, fittings, and tubings.
  • 👍 SUPER EASY FILTER INSTALL: This system comes complete with all installation parts and accessories. The easy to follow manual and video will guide you step by step in the install process. NO tools are required to change these quick easy twist filters.
  • 👍 NOTHING ADDED OR WASTED: No water is drained to waste and no contaminants are added into the water during the filtration process.

Premium Under Sink Direct Connect One Water Filtration System with 100% Lead-Free Chrome Faucet -Removes Chlorine, Bad Tastes, Odors and 99.99% of Contaminants (One Stage of Filtration)

Premium Under Sink Direct Connect One Water Filtration System with 100% Lead-Free Chrome Faucet -Removes Chlorine, Bad Tastes, Odors and 99.99% of Contaminants (One Stage of Filtration)

    Features:

  • 💎 KEEPS WATER FRESH – Reduces up to 99% of contaminants including sediment, scale, rust, dirt, coarse sand, sand, fine sand, extra fine sand, and silt & removes chlorine, odors, particles, and tastes.
  • 💎 ULTRA-FRESH, DELICIOUS DRINKING WATER AT YOUR HOME – for drinking, cooking; making coffee, tea & baby formula; serving guests, pets & plants; and providing beauty, dietary & health benefits.
  • 💎 5 MICRON BLOCK CARBON CARTRIDGE is wrapped and sealed and meets NSF Standards and Regulations. Dimensions: 10” x 2.5”. WELL-MATCHED: Watts Premier MAXETW-975, DuPont WFPFC8002, SCWH-5, Whirlpool WHA2BF5, Water Filter Tree WWC105, CBC-10, GE FXWTC, WFD WF-CB105, Culligan D-10A & D-10, EcoPure EPW2C, Aquaboon CTO, Purenex C-5M, Neo-Pure CTO1-2510, COR10B5, KleenWater KWGE25RG, WFDWC30001, Omnipure OMB934-5M, WFPFC9001, Everpure CG5-10, MatriKX E32-250-125-975, DEV9108-15, iSpring FC15
  • 💎 QUICK-CONNECT FITTINGS MAKE FOR FAST, EASY INSTALLATION. A 1/2-Inch hole is all that is needed for the faucet stud (all series), but a cover plate is included to accommodate larger pre-drilled holes.
  • 💎 DRIP-FREE PERFORMANCE CHROME FAUCET and WELL-MATCHED following Models: Purenex GF-01C, Aquaboon 8541997846, Watts Pureteck 116023, iSpring GB1, HOMEWERKS 3310-160-CH-B-Z, Crystal Clear GF-01C, Hydronix LF-BLR-BN

Aquasana 3-Stage Under Sink Water Filter System – Kitchen Counter Claryum Filtration – Filters 99% Of Chloramine – Oil-Rubbed Bronze – AQ-5300

Aquasana 3-Stage Under Sink Water Filter System - Kitchen Counter Claryum Filtration - Filters 99% Of Chloramine - Oil-Rubbed Bronze - AQ-5300

    Features:

  • Instantly Transform Ordinary Tap Water Into Clean, Extraordinary Water – Removes up to 99% of 77 contaminants while leaving healthy minerals so you can drink with confidence. This system will NOT reduce Total Dissolved Solids (TDS).
  • High Flow Rate – This system powers through a half-gallon of water every minute. No need to wait for clean water compared to traditional drip filters.
  • Cost Efficient & Long Lasting – The most economical filter on the market at less than 10 cents per gallon filtered. Lasts for 6 months or 600 gallons before a replacement filter is needed.
  • Easiest Filter Replacement – Replacements are engineered for ease. No need to disconnect hoses or water lines. housing easily twists off for snappy replacement!
  • Top-Grade Components – Includes first set of filter and all parts required for DIY Installation – No plumber required.

Woder WD-S-5K-R Replacement Cartridge To All Woder WD-5K-S Types (Gen3 Models) and WD-FRM-5K Dual Stage Models (As Stage2). WQA Certified. Made in the USA.

Woder WD-S-5K-R Replacement Cartridge To All Woder WD-5K-S Types (Gen3 Models) and WD-FRM-5K Dual Stage Models (As Stage2). WQA Certified. Made in the USA.

    Features:

  • The is a replacement cartridge, NOT a whole system. The Woder WD-S-8K-REP is a replacement filter for Woder WD-S-5K filtration systems and a 2nd stage to all Woder WD-5K-FRM Dual Stage Fluoride Removal Systems. Capacity – 5000 Gallons.
  • WQA GOLD SEAL CERTIFIED to NSF/ANSI 42 for Chlorine, taste, odor and NSF/ANSI 372 for lead free compliance as verified and substantiated by test data. Water purification unit. EPA Est. No. 51160-AJ01. Active ingredients: Silver Carbon 1.05% , Lead absorbent.
  • MADE IN THE USA – Inert ingredients: Woder CB Gen3 Formula. This treatment unit is to be used in conjunction with municipally treated water.
  • Removal Capacity: Lead (99.9%), heavy metals, chlorine (99.9%), chromium 6, mercury, volatile organic compounds, carcinogens, and other contaminants, as well as turbidity, odors and bad tastes.
  • PURE WATER AS SPRING WATER. Bring water to your main kitchen faucet or bathroom faucet, that is as pure and healthy as spring water. Enjoy safe, clean water for drinking, brushing your teeth, or washing your hands and face. Flow Rate 2GPM @65 psig.

Woder WD-FRM-8K-R (5K-12″) Replacement Cartridge To All Woder WD-FRM-8K Dual Stage FRM Fluoride Removal Water Filters (As Stage1) – Made in the USA

Woder WD-FRM-8K-R (5K-12") Replacement Cartridge To All Woder WD-FRM-8K Dual Stage FRM Fluoride Removal Water Filters (As Stage1) – Made in the USA

    Features:

  • This WD-FRM-8K-R makes a WD-FRM-8K dual stage system. (This is a 5K-FRM-8K-R which is good for 8K of Gallons with the stage 2 WD-S-8K-R). This WD-FRM-8K-R is a Replacement filter for the Woder FRM Fluoride Filter – Dual Stage Undersink Water Filtration System With Fluoride Removal Premium Media (95%) (ASIN B0126EN5NQ). (one of 2 replacement filter. Should be purchased with ASIN B0144MFN92 which is the WD-S-8K-R replacement filter).
  • This is one of 2 replacement filters. Should be purchased with ASIN B0144MFN92 which is the WD-S-8K-R replacement filter.
  • Water purification unit. EPA Est. No. 51160-AJ01. Active ingredients: CB FRM 1401.
  • The Woder WD-FRM-8K-R is the only water filter that removes up to 95% Fluoride!!

Aquasana OptimH2O Reverse Osmosis Under Sink Water Filter System – Filters 95% Of Fluoride – Kitchen Counter Faucet Filtration – Chrome – AQ-RO-3.55

Aquasana OptimH2O Reverse Osmosis Under Sink Water Filter System - Filters 95% Of Fluoride - Kitchen Counter Faucet Filtration - Chrome - AQ-RO-3.55

    Features:

  • Drink With Confidence Knowing Your Drinking Water Has Been Purified Through Both Reverse Osmosis & Aquasana’s Claryum Filtration – to filter 95% of fluoride & 97% Of Chlorine, plus 99% of 86 other contaminants, including lead, mercury, asbestos, pharmaceuticals and more.
  • One Of A Kind High Performance Filter – The first filter system to combine Reverse Osmosis, advanced Claryum filtration, and Remineralization technology.
  • Removes 5x More Contaminants Than Other RO Systems – Tested & proven to provide you with cleaner drinking water than other reverse osmosis filters.
  • Easiest Filter Replacement – Replacements are engineered for ease. No need to disconnect hoses or water lines. housing easily twists off for snappy replacement!
  • Top-Grade Components – Includes first set of filters, RO tank, faucet and all parts required for DIY installation – No plumber required!

Woder WD-4K Ultra High Capacity Under Sink Water Filter with Direct Connect Fittings – WQA Certified 4000 Gallons – Removes Chlorine, Lead, Chromium 6, Heavy Metals, Odors/Contaminants – US Made

Woder WD-4K Ultra High Capacity Under Sink Water Filter with Direct Connect Fittings - WQA Certified 4000 Gallons – Removes Chlorine, Lead, Chromium 6, Heavy Metals, Odors/Contaminants - US Made

    Features:

  • WQA CERTIFIED – to NSF/ANSI 42 for Chlorine, taste, odor and NSF/ANSI 372 for lead free compliance as verified and substantiated by test data. The Woder WD-4K with DC fittings removes lead, heavy metals, chlorine (99%), chromium 6, mercury, carcinogens, and other contaminants (99%), as well as turbidity, unpleasant odors and tastes.
  • USA MADE UNDER SINK WATER FILTER. Advanced Selective Filtration Technology removes 99.9% of contaminants while it leaves in essential minerals. The Woder WD-4K-DC removes Lead, Heavy metals, Chlorine, Mercury, PFCs, TMHs, VOCs, Glyphosate, Chromium 6, Trihalomethanes, Detergent, Turbidity, Unpleasant odors and tastes. Should be used in conjunction with municipally treated drinking water or water that has been properly disinfected prior use.
  • NO PLUMBING REQUIRED – Comes with ‘Direct Connect’ hoses that fit standard 3/8” water valves under US kitchen and bathroom sinks. The 3/8” Direct Connect Hose are made to install directly to the existing cold water valve and faucet stem under your sink.
  • PURE WATER AS SPRING WATER. Bring water to your main kitchen faucet or bathroom faucet, that is as pure and healthy as spring water. Enjoy safe, clean water for drinking, brushing your teeth, or washing your hands and face. Flow Rate 3GPM @65 psig.

Woder WD-FRM-5K-DC Fluoride Removal Water Filter With Direct Connect Under Sink Fittings – Made in the USA – Removes Chlorine, Lead, Heavy Metals and Odors

Woder WD-FRM-5K-DC Fluoride Removal Water Filter With Direct Connect Under Sink Fittings – Made in the USA – Removes Chlorine, Lead, Heavy Metals and Odors

    Features:

  • MADE IN THE USA – WD-S-5K-R (2nd stage cartridge) is WQA Gold Seal certified to NSF/ANSI 42 for Chlorine, taste, odor and NSF/ANSI 372 for lead free compliance as verified and substantiated by test data. Lasts for a 5,000 Gallons.

Woder WD-FRM-5K-JG-1/4 Fluoride Removal Refrigerator Water Filter/Ice Maker Filter – Ultra High Capacity 5000gal – USA Made – With 1/4″ Built-in John Guest Fittings For Unbraided ¼” PVC or 1/8” PEX

Woder WD-FRM-5K-JG-1/4 Fluoride Removal Refrigerator Water Filter/Ice Maker Filter – Ultra High Capacity 5000gal - USA Made - With 1/4" Built-in John Guest Fittings For Unbraided ¼” PVC or 1/8” PEX

    Features:

  • MADE IN THE USA – NO PLUMBING REQUIRED – Watch Installation Video – INLINE WATER FILTER (not under sink water filter) with JG-1/4” connections (DOES NOT COME WITH HOSES AS IT CONNECTS TO EXISTING 1/4″ WATER SUPPLY LINE) – Fits All 1/4″ Plastic Flex Tubing and Flexible Copper Tubing used for water supply to ice makers and refrigerators, etc. 1/4” JG also fits the 1/8″ PEX TUBING as its O.D. is the same as 1/4” Tube. DOES NOT FIT BRAIDED HOSES.
  • The Woder WD-FRM-5K-JG-1/4 Fluoride Removal Inline Water Filter removes Fluoride (up to 95%) lead, heavy metals, chlorine (99%), chromium 6, mercury, carcinogens, and other contaminants (99%), as well as turbidity, unpleasant odors and tastes.
  • The Woder WD-FRM-5K-JG-1/4 works with all major brands that use standard 1/4” PVC / Plastic / Copper tubing. Lasts Longer – for a minimum of 2 years or filters 5,000 gallons
  • WQA GOLD SEAL CERTIFIED – WD-S-5K-R (2nd stage cartridge) is certified by WQA to NSF/ANSI 42 for Chlorine, taste, odor and NSF/ANSI 372 for lead free compliance as verified and substantiated by test data.
  • ADVANCED SELECTIVE FILTRATION TECHNOLOGY – Gives you and your family, clean, safe, healthy water by removing 99.9% of contaminants commonly found in municipal water while leaving in essential minerals vital to your health. Flow Rate 1.32GPM @65 psig.

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