10 Best Under Counter Water Filters Reviewed as of September 2023

Reviews Scanned

Waterdrop 15UA Under Sink Water Filter System, 2 Years Capacity, NSF/ANSI 42 Certified, Reduces PFAS, PFOA/PFOS, Lead, Chlorine, Odor, Under Counter Water Filter Direct Connect to Kitchen Faucet

Less than ＄31.99 per replacement filter (Search " B085G78F7R "on Amazon), save over 50% of cost on subsequent use.
Ultra-Long Service Life: When used with municipal water, each filter has a maximum service life of 24 months or 16,000 gallons.[1]
Innovative Multistage Filtration: The Waterdrop Direct Connect Under Sink Water Filter System uses innovative multistage filtration. And it can effectively reduces PFAS, PFOA/PFOS, lead, chlorine, heavy metals, chemical iṁpurity, sediment and other large particles.[2] Enjoy healthy and pure water straight from your tap – no need to buy bottled water anymore!
WQA Certified Filter: Made from premium BPA-free and lead-free materials, the under sink water filter is certified by WQA against NSF/ANSI 372 Standard, ensuring reliable use from inside to outside. Certified by WQA 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. To look over the 42&372 certification, please search "WD-15UA" on WQA official website.
Easy Installation: The system should be connected only to a cold water supply. With innovative push-to-connect fittings, the entire installation process takes less than 3 minutes. The twist-and-lock design ensures that you can replace the filter in 3 seconds. The system includes a 3/8” hose with a direct connection that adapts to standard 3/8’’ feed water valves under US sinks. The 3/8’’–1/2’’ convertor fitting helps you connect the system to both 1/2’’ and 3/8’’ cold water lines and faucets.

Sale2

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

Less than ＄25.99 per replacement filter (Search " B085G66JTZ "on Amazon), save over 50% of cost on subsequent use.
[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.
[Deep Filtration and WQA 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 and is certified by WQA against NSF/ANSI 372 Standard. The water filter has been certified by WQA under NSF/ANSI 42 Standard and can successfully reduce chlorine, taste, and odor. 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 WQA website.
[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.

Sale3

CuZn UC-200 Under Counter Water Filter - 50K Ultra High Capacity - Made in USA

Incredible Capacity and Lifespan, Up to 5 Years per Filter; CuZn Backs the UC-200’s Long Lasting Performance With a Comprehensive 5 Year Prorated Performance Warranty, CuZn Will Provide Warranty Replacement if Early Expiration Occurs; the UC-200 Is for Municipal Water Only; Do Not Use With Private Well Water; the UC-200 Is a Water Purifier, the UC-200 Does Not Soften Water; the UC-200 Will Not Resolve Issues Caused by Excessively Hard Water Like Lime Scale Mineral Deposits on Tea Kettles
Simple to Install; The UC-200 is Designed for Direct Connect to the main Kitchen Sink Cold Water Line; No Drilling Through the Countertop to Mount an Extra Filter Dispenser Faucet Required; How to Install Video Tutorial Instructions Available; If You Have Non-Standard Under Counter Plumbing Connection Issues or Are Unable To Complete Installation, CuZn Technical Support Will Diagnose and Provide All Additional Adapters Required To Complete Your Installation
3 Stage Filtration Process Utilizing Micro Sediment Membranes, KDF-55 and Coconut Shell Carbon; the UC-200 Will Not Reduce TDS or PPM Type Meter Readings; if TDS or PPM Removal Is Desired, a Reverse Osmosis Type Filter System is Required; the UC-200 Is Designed To Purify Water Without Reducing the Health Beneficial Mineral Content and as a Result the TDS or PPM Type Meter Readings Will Show the Same Results When Measuring the UC-200’s Filtered Water and the Unfiltered
Bacteriostatic; Unlike Carbon Only Filters, the UC-200 Is Bacteriostatic and Not Susceptible to Mold or Bacteria Growth; To Test the UC-200’s Filtered Water To Confirm if the Filter Is Still Working, Utilize DPD#1 Chlorine Test Strips and Replace the UC-200 When Chlorine Is Detected in the Filtered Water; Sensitive Test Strips That Test Down 0.25 or 0.5ppm Are Ideal for Earliest Possible Detection of Chlorine; Early Expiration Prior to 5 Years Use Is Covered Under Warranty by CuZn
CuZn’s Comprehensive Install Insurance Policy Is Included With Purchase of the UC-200 on Amazon; if You Are Unable To Complete Your Installation for Any Reason; Or You Have an Alternative Method for Installing the Filter In Mind Such As Connecting the UC-200 to a Dedicated Filtered Water Only Dispenser Faucet Purchased Separately; Simply Use Amazon Buyer-Seller Messaging To Send Us Your Request and CuZn Tech Support Will Diagnose and Provide the Necessary Alternative Install Kit on the House

Sale4

Waterdrop TSA 3-Stage Under Sink Water Filter System, Under Sink Water Filtration System, Reduces PFAS, PFOA/PFOS, Fluoride, Chlorine, Bad Taste & Odor, NSF/ANSI 42 Certified Element, USA Tech

[More filters, better taste] This under sink water filter system comes with 3 filters and can realize 8-stage deep filtration to reduce PFAS, PFOA/PFOS, residual chlorine, fluorides, heavy metals, silt, rust, cyst, etc. Its KDF materials can effectively reduce heavy metals. Its resin reduces fluorides. The CT filter has passed WQA certification to reduce residual chlorine and improve taste, thereby ensuring every drop is pure and healthy. It also can retain minerals, but cannot reduce TDS.
[No leaking or cracking with highly precised technique] The under counter water filter adopts strong materials with an upgraded design. In addition, the age-resistant and freeze-resistant materials make the system twice thicker. The under counter water filter system for kitchen has also passed 400 psi burst pressure, 100,000+ pulse tests at 150 psi, and static tests at 300 psi. These tests prove that the durable integral design clears up worries about cracking cases and leaking issue.
[Lifespan of up to 18 months] The three under sink water filters have lifespans of 6 months, 8-12 months, and 12-18 months, respectively.
[3min installation, 3s replacement] This under sink water filter system works perfectly with 3/8” and 1/2” cold water tubes. The under counter water filter is a simple DIY. With innovative push-to-connect fittings, the installation takes less than 3 minutes. In addition, the twist-and-lock design lets you replace each filter in just 3 seconds.
[Good service] With a stale water flow, this under sink water filter provides all-round protection for drinking or usage. The carbon block is made from natural coconut shells. Please confirm whether you are allergic to it.

Sale5

PUREPLUS Under Sink Water Filter, 22000 Gallons, 99.99% Chlorine Reduction, NSF/ANSI Certified Direct Connect Under Counter Water Filtration System

𝟮𝟮,𝟬𝟬𝟬 𝗴𝗮𝗹𝗹𝗼𝗻𝘀 𝗨𝗹𝘁𝗿𝗮-𝗛𝗶𝗴𝗵 𝗖𝗮𝗽𝗮𝗰𝗶𝘁𝘆-PUREPLUS under sink water filter has an ultra-high water production capacity of 5-year/ 22,000 gallons certified by IAPMO. Average daily cost of less than 0.018 dollars, which is only 1/10 of similar products on the market. Flow rate of up to 2.5GPM at 60PSI, which is 3X more of common under counter filter.
𝗡𝗦𝗙 𝗖𝗲𝗿𝘁𝗶𝗳𝗶𝗲𝗱 𝟵𝟵% 𝗘𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁 𝗙𝗶𝗹𝘁𝗿𝗮𝘁𝗶𝗼𝗻 - PUREPLUS undersink water filter is certified against NSF/ANSI 42, adopts 6 in 1 special composite filter. With a filtration accuracy of up to 0.5 microns, it effectively filtering 99% of chlorine & odor, removing heavy metals, sediment and other large particles, significantly improving water taste.
𝗦𝘂𝗽𝗲𝗿𝗶𝗼𝗿 𝗟𝗲𝗮𝗱-𝗙𝗿𝗲𝗲 𝗠𝗮𝘁𝗲𝗿𝗶𝗮𝗹 - PUREPLUS under sink filter is certified against NSF/ANSI 372 by IAPMO, using food grade Lead-Free materials, which meets Australian WaterMark, TUV, ROHS, REACH, BPA Free high standards, ensuring water safety for you and your family.
𝗘𝗮𝘀𝘆 𝘁𝗼 𝗜𝗻𝘀𝘁𝗮𝗹𝗹 - The system should be connected only to a cold water supply. PUREPLUS under counter water filter uses upgraded quick connect design, which greatly shortens the installation time, reduces the possibility of leakage and improves your installation experience. Ideal for drinking, cooking, skincare, and cleaning.
𝗪𝗮𝗿𝗺 𝗧𝗶𝗽𝘀 - PUREPLUS WFS5300A water filter is suitable for faucets with 1/2" or 3/8" FEMALE NPT thread, If a female threaded connector is needed to connect to your faucet, please contact us BEFORE purchase. It retains the beneficial minerals in the water and does not change the TDS value. If you want to remove TDS, please search "B092L97LD7" for a RO system. For smoother installation, please make sure to insert the hoses securely.

Sale6

Waterdrop 17UA 3 Years Under Sink Water Filter System-Reduces PFAS, PFOA/PFOS, Lead, Chlorine, Bad Taste-Under Counter Water Filter Direct Connect to Kitchen Faucet-NSF/ANSI 42 Certified-24000 Gallons

Ultra-Long Service Life: When used with municipal water, each filter has a maximum service life of 36 months or 24,000 gallons.
Efficient Filtration: The Waterdrop Direct Connect Under Sink Water Filter System is tested by WQA against NSF/ANSI 42 for reduction of chlorine, taste&odor. Tested by KC authorative organization, it can effectively reduce VOC(chloroform), benzene, chlorobenzene, chloropicrin and styrene. It can effectively remove sediment, rust and other large particles. Tested by third party laboratory against NSF/ANSI 53 standard it can reduce lead.Besides, it can reduce PFAS, PFOA/PFOS.
WQA Certified Safe Material: Made from premium BPA-free and lead-free materials, the under sink water filter is certified by WQA against NSF/ANSI 372 Standard, ensuring reliable use from the inside out. To look over the 42&372 certification, please search "WD-17UA" on WQA official website.
Easy Installation: The system should be connected only to a cold water supply. With innovative push-to-connect fittings, the entire installation process takes less than 3 minutes. The twist-and-lock design ensures that you can replace the filter in 3 seconds. The system includes a 3/8” hose with a direct connection that adapts to standard 3/8’’ feed water valves under US sinks. The 3/8”–1/2”convertor fitting helps you connect the system to both 1/2” and 3/8” cold water lines and faucets.
Fast Flow Rate & Multiple Uses: The fast and stable water supply provides pure water that tastes like spring water. The tested full flow rate is 0.75 gpm at 60 psi. Developed for household and commercial use, the Under Sink Water Filter System can be installed in your kitchen, bathroom, RV, or office to meet your daily water needs. NOTE: At least 21.5" of vertical under sink space is required to install this filter!

Sale7

Waterdrop TSU 0.01μm Ultra Under Sink Water Filter System, 3-Stage Under Sink Water Filtration System, Tankless,Reduce PFAS, PFOA/PFOS & Chlorine, Smart Panel, No Waste Water, No Electricity Required

𝟎.𝟎𝟏 𝐮𝐦 𝐮𝐥𝐭𝐫𝐚 𝐮𝐧𝐝𝐞𝐫 𝐬𝐢𝐧𝐤 𝐰𝐚𝐭𝐞𝐫 𝐟𝐢𝐥𝐭𝐫𝐚𝐭𝐢𝐨𝐧 𝐬𝐲𝐬𝐭𝐞𝐦: The 0.01 um ultra under sink water filtration system can reduce most harmful substances that are larger than 0.01 um. The integrated-waterway under sink water filter can effectively reduce residual chlorine, PFAS, PFOA/PFOS, taste and odor, heavy metals and prevent leakage. Please note that Waterdrop under sink water filter can retain minerals that are beneficial to health, but it cannot reduce the TDS.
𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐞𝐝 𝐰𝐚𝐭𝐞𝐫𝐰𝐚𝐲𝐬: This Waterdrop under sink water filter system adopts advanced integrated waterways to prevent water leakage, so that you can feel free to replace the filter without shutting off water supply. The under sink water filter can give you a safe water drinking experience. If you need the replacement PP filter for WD-TSU or WD-TSC, please search for B09SL954ZS.
𝟐𝟒 𝐦𝐨𝐧𝐭𝐡 𝐟𝐢𝐥𝐭𝐞𝐫 𝐥𝐢𝐟𝐞𝐬𝐩𝐚𝐧: With the adoption of the advanced ultrafiltration membrane design, the service life of the under sink water filter system is prolonged to 24 months, the replacement frequency is reduced, and the maintenance cost is saved. Besides, the lifespan of the PP filter is 6 months, and the lifespan of the CT filter is 12 months. The carbon block is made from natural coconut shells. Please confirm whether you are allergic to it.
𝐒𝐦𝐚𝐫𝐭 𝐢𝐧𝐝𝐢𝐜𝐚𝐭𝐨𝐫𝐬: The under sink water filtration system is provided with smart indicators, which help to improve the life quality, so that you can get the water quality and work modes at a glance. The indicators of the under sink water filtration system on the panel notify you when to replace the filter, ensuring purity and safety of drinking water.
𝐄𝐚𝐬𝐲 𝐭𝐨 𝐢𝐧𝐬𝐭𝐚𝐥𝐥: Waterdrop under sink water filter is equipped with a stainless steel faucet, a 3/8” water inlet hose, a 1/4” water outlet hose, a 3/8”-1/2” feed water adapter, and other necessary accessories. You can install this Waterdrop Ultra under sink water Filtration System in a few minutes, and its filter can be easily replace by simple twist and pull within 3 seconds. Please note that you need to drill a 1-inch hole on your countertop.

Sale8

SimPure V7 Under Sink Water Filter, 5-Stage Stainless Steel Water Filtration System Direct Connect to Kitchen Faucet, Reduces 99% Lead, Chlorine, Bad Taste, 20K Gallons (No Drilling Required)

💧5 SATGE ADVANCED FILTRATION - 0.5 MICRON - SimPure V7 design to purify Municipal Water without reducing the health beneficial mineral content, which uses Double-Sediment Membranes + KDF-55 + Double-Activated Carbon Filter, certified to reduce heavy metals(lead), chlorine, bad tastes & odor and other impurities, provides you with healthy and great-tasting drinking water. Note: This system DOES NOT lower TDS. If you prefer low TDS, please choose SimPure RO system.
💧3 MINS INSTALLATION - No drilling and plumber required, direct connect to the main kitchen sink cold water line. Fits for 3/8'' and 1/2'' U.S. standard/non stardard kitchen/bathroom sinks cold water line.(Package including the 3/8" to 1/2" converter fittings). Prefect for renters and for people who can't install a separate filter-faucet.
💧HIGH-QUALITY SAFE MATERIAL - The system is made from 304 food-grade stainless steel, BPA-free. Compared with traditional plastic under sink water filter, V7 effectively resist leakage, collision, sorrosion and burst. Ensure you enjoy healthy and safe drinking water without worry.
💧HIGH FLOW RATE & MONEY SAVING - When connected to municipal tap water, you can get up to 12 months service life or 20,000 gallons of filtered water. Also can deliver up to 1.6 gallons per minute of filtered water. Suitable for drinking, cooking, cleaning. It's the best valuable investment for home, rental housing, or RV.
💧SERVING USA SINCE 2006 - Seattle, WA USA, SimPure dedicated in providing world-class quality of water filtration solutions. If you are not satisfied with your purchase, then we want to hear from you. Please contact our trained water specialists. And is available to answer any questions during the life of the product. (Please scroll down for replacement filter purchase options).

Sale9

ICEPURE Under Sink Water Filter System, 3 Years or 22K Ultra High Capacity NSF/ANSI 42 Certified, Direct Connect Under Counter Drinking Water System, 0.5 Micron Removes 99.99% Chlorine Odor USA Tech

❄️ 【𝗘𝗮𝘀𝘆 𝗜𝗻𝘀𝘁𝗮𝗹𝗹𝗮𝘁𝗶𝗼𝗻 & 𝗛𝗶𝗴𝗵 𝗙𝗹𝗼𝘄 𝗥𝗮𝘁𝗲】---Less than ＄31.99 per replacement filter (Search "B08Q3KXS3S "on Amazon), saves over 40% of the cost on subsequent use. Easy to install with clear instructions and video. ICEPURE Under Sink Water Filter with super simple plug-and-play install design. It takes less than 3 minutes for the installation and a 2-sec filter change. No professional is required. High flow rate, The tested full flow rate is 𝟮.𝟱 𝗚𝗣𝗠 at 60PSI.
❄️ 【𝐍𝐒𝐅/𝐀𝐍𝐒𝐈 𝟒𝟐 & 𝟑𝟕𝟐 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 & 𝐖𝐚𝐭𝐞𝐫 𝐓𝐚𝐬𝐭𝐞 𝐆𝐫𝐞𝐚𝐭】--- ICEPURE Under Sink Water Filter System bears major Authoritative Certifications on markets, such as NSF/ANSI 42 & 372. NSF/ANSI 42 tested reduces Chlorine, Taste, and Odor. 22000 Gallons filter capacity. Significantly improving the taste of drinking water to provide pure-tasting water, while retaining minerals beneficial to the human body. NSF/ANSI 372 Certification for Lead-Free, ensure material safety.
❄️ 【 𝐋𝐨𝐧𝐠 𝐒𝐞𝐫𝐯𝐢𝐜𝐞 𝐋𝐢𝐟𝐞 & 𝐋𝐞𝐚𝐤-𝐟𝐫𝐞𝐞 𝐃𝐞𝐬𝐢𝐠𝐧】--- Tested by NSF/ANSI 42 for large filtration capacity of 22000 Gallons when used municipal water. 3x longer life than other filters, the cheaper most bang for the buck. Recommend replacing the filter every 22000 gallons for 3 Years for better filtration. ICEPURE filters use advanced and precise measurement technology, combined with 3D multi-dimensional design technology to ensure that fully match and do not leak water.
❄️ 【 𝐏𝐫𝐞𝐦𝐢𝐮𝐦 𝐌𝐚𝐭𝐞𝐫𝐢𝐚𝐥】--- BPA-free and Food-grade materials. This filter is made from advanced coconut shell carbon and is Certified by Authoritative organizations for Material safety. The Outer layer is 0.5 Micron, ensuring better filtration. The carbon blocks have been independently tested for heavy metals, large sediments, and all other dangerous impurities. With such a high level of filtration, you can be confident that you are drinking clean and safe water.
❄️ 【𝐅𝐢𝐭 𝟏/𝟐" 𝟑/𝟖" 𝐂𝐨𝐥𝐝 𝐖𝐚𝐭𝐞𝐫 𝐋𝐢𝐧𝐞】--- Only for COLD WATER LINE. Directly connect to the original faucet without a countertop hole. Suitable for faucets with 1/2" or 3/8" FEMALENPT thread. For a different connection type, please contact us BEFORE purchase. It can be quickly installed in your kitchen, bathroom, bar, RV, or office to meet daily water needs. Ideal for drinking, cooking, making coffee, pet water, houseplants, humidifier, skincare, cleaning, etc.

Sale10

AQUA CREST 5KDC Under Sink Water Filtration System, Direct Connect Under Sink Water Filter, Reduces PFAS, PFOA/PFOS, Chlorine, NSF/ANSI Tested 5K Gallons Ultra High Capacity, USA Tech

【Efficient filtration & superior material】AQUA CREST Ultra High Capacity Under Sink Direct Connect Water Filtration System employs a high-quality coconut shell activated carbon with a filtration accuracy of 0.5 μm. Tested against NSF/ANSI standards, the under sink water filter effectively reduces PFAS, PFOA/PFOS, Chlorine, Taste and Odor. Its KDF materials can effectively reduce heavy metals. Under sink water filter reduces Intercepting Scale, Suspended Solids, Colloid, Rust and Large Particles.
【Good value for money】The under sink water filter has a service life of 12 months or 5,000 gallons. You will need to replace the inline water filter only once a year, which doesn’t breed contąminants. With a fast water flow rate of 1.5 gpm, the under sink water filtration system can fill a cup with water in 3 seconds. On average, by spending 5 cents per day, you will enjoy safe and clean water. Less expense, better filtration.
【All-inclusive packing list】5,000-gallon under sink water filter×1, 3/8’’ braided stainless steel inlet hose×1, 3/8’’ braided stainless steel outlet hose×1, clips and screws×1 set, cable tie mounts and cable ties×1 set. The direct connect hoses fit standard 3/8” water valves under US kitchen and bathroom sinks.
【Simple installation】You can finish the installation in 3 minutes without drilling any holes or cutting any hoses. This under sink water filtration system comes with all hoses and push-to-connect fittings to install directly to the cold water line under your sink.
【Multiple uses】The under sink water filtration system can be installed in your kitchen, bathroom or office to meet your daily water needs. Ideal for drinking, cooking, washing, and pet feeding. With an additional adapter fitting, you can also connect the under sink water filter to your refrigerator. Note: This system will NOT reduce Total Dissolved Solids (TDS).

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