10 Best Under Counter Water Filter -Reviews & Buying Guide

Features :

• 【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 Undersink Water Filtration System uses innovative multistage filtration. And it can effectively reduces 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 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. To look over the 42&372 certification, please search “WD-15UA” on WQA official website. The activated carbon is made from natural coconut shells. Please confirm whether you are allergic to it.
• 【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 and fresh 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 Undersink Water Filtration System can be installed in your kitchen, bathroom, RV, or office to meet your daily water needs. Ideal for drinking, cooking, skincare, and cleaning.

Features :

• 【𝐒𝐞𝐥𝐞𝐜𝐭𝐞𝐝 𝐦𝐚𝐭𝐞𝐫𝐢𝐚𝐥𝐬】Waterdrop adopts lead-free 304 stainless steel material, which makes the water filter for sink resistant to corrosion and compression. The system is durable, strong, and less prone to cracking, thanks to minimal lead and cadmium content. The thick sealing ring in the cap prevents leakage. Kindly reach out to us if you experience any issues. Our premium after-sale service is available to help out at all times within three years of purchase.
• 【𝐄𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐭 𝐟𝐢𝐥𝐭𝐫𝐚𝐭𝐢𝐨𝐧】This Waterdrop stainless steel under sink water filter has 6 layers of premium filtration material. The 0.01 μm precise ultrafiltration membrane filters out most harmful substances larger than 0.01 μm. The activated carbon block and PP cotton effectively reduces chlorine, heavy metals, chemicals, cyst, odor, rust, and large particles in your water, while improving the water taste.
• 【𝐑𝐞𝐜𝐲𝐜𝐥𝐚𝐛𝐥𝐞 𝐡𝐨𝐮𝐬𝐢𝐧𝐠】The recyclable housing design reflects our commitment to protecting the environment. You don’t need to replace the stainless-steel housing. Once the filter expires, just replace the inner filter and that’s all. PP filter lasts 6-8 Mths, UF filter lasts 12 Mths and CT filter lasts 12-24 Mths, which may vary according to local water quality. Longer lifespan reduces how frequent you replace it. It ultimately helps to save money, while protecting the environment.
• 【𝐅𝐚𝐬𝐭𝐞𝐫 𝐰𝐚𝐭𝐞𝐫 𝐟𝐥𝐨𝐰 𝐚𝐧𝐝 𝐞𝐚𝐬𝐲 𝐢𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧】The flow rate can get as high as 1.59 GPM, meaning that you can fill up an 8oz cup of water in just 2.3 seconds. The water flow remains stable even at a high speed. The innovative design of this under sink water filtration system means you can install without drilling a hole on the countertop. You can connect the system directly to your home faucet, and get pure water for all your needs - drinking, washing, and others.
• 【𝐌𝐮𝐥𝐭𝐢𝐩𝐥𝐞 𝐚𝐫𝐫𝐚𝐧𝐠𝐞𝐦𝐞𝐧𝐭 𝐨𝐩𝐭𝐢𝐨𝐧𝐬】The user-friendly innovative design allows the system to be hung on the cabinet wall or placed on the floor. For homeowners who wants to avoid drilling holes in the cabinet, the system is right for you.

Features :

• [More filters, better taste] The three replacement filters represent three-guard household water lines, effectively reducing silt, rust, sediment, cyst, and large particles, heavy metals, turbidity, carbon, asbestos, and fluoride. Furthermore, the under sink water replacement filter can effectively reduce chlorine with WQA authority certification, improving water taste for direct drinking, coffee, or beverages. It doesn’t reduce TDS, but it retains natural minerals.
• [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 system 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 filters have lifespans of 6 months, 8-12 months, and 12-18 months, respectively. This long lifespan eliminates the cost of purchasing and replacing filters every now and then. Under the premise of meeting the needs of a family of five at a go, the average daily cost is only 0.24 dollars. We help you save over 60% cost compared to buying bottled water.
• [3min installation, 3s replacement] This water filter for sinks works perfectly with 3/8” and 1/2” cold water tubes. The overall installation process does not require the help of a plumber; it is a simple DIY. With innovative push-to-connect fittings, the installation takes less than 3 minutes, with no plumbing experience. In addition, the twist-and-lock design lets you replace each filter in just 3 seconds.
• [On-demand filtration solution] The waterdrop filter connects to your original faucet, so that you don’t have to drill a hole. With a stale water flow, this filter provides all-round protection for drinking or usage.If you have any problems with the product, contact our 24/7 technical support without any worry!

Features :

• 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

Features :

• Supreme quality - designed, engineered, and assembled in USA to guarantee water safety & your health. WQA certified to provide unlimited clean, refreshing crisp tasting water superior to bottled water
• Premium long-lasting filters remove up to 99% of contaminants such as chlorine, taste, odor, VOCs, as well as toxic fluoride, arsenic, lead, nitrates, heavy metals and 1000+ contaminants. Max Total Dissolved Solids - 2000 ppm. Feed Water Pressure 40-85 psi
• America’s No.1 rated water filter brand with 20 years of success guaranteeing trouble free, noise-free system for long lasting, dependable, pure drinking water. 2 year extended manufacturer warranty is available upon registration
• System comes with 100% lead-free designer faucet, plus certified JG food grade tubing and parts to provide safe, contamination-free pure water. Pipe Size: 1/4 inches.
• High quality leak-free quick connect fittings require no extra lock clips to seal leak - not relying on water leak detector to protect your home like other brands. Comes with all parts and industry’s best instructions and videos for an easy DIY experience.

Features :

• 【Ultra-long service life】When used with municipal water, each filter has a maximum service life of 12 months or 8,000 gallons.[1]
• 【Innovative multistage filtration】The Waterdrop Direct Connect Undersink Water Filtration System uses innovative multistage filtration. And it can effectively reduces 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 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. To look over the 42&372 certification, please search “WD-10UA” on WQA official website. The activated carbon is made from natural coconut shells. Please confirm whether you are allergic to it.
• 【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 Undersink Water Filtration System can be installed in your kitchen, bathroom, RV, or office to meet your daily water needs. With its exquisite design and small size, it is the best choice for a rented apartment. Ideal for drinking, cooking, skincare, and cleaning.

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.

Features :

• High quality, designed, engineered and assembled in the USA; System built with US MADE super capacity filters for long lasting dependable filtration
• Effectively remove chemicals (i.e. chlorine), taste and odors. NOT designed for TDS removal
• Premium long-lasting filters used to treat tap water, well water. Provide unlimited refreshing water. Feed Water Pressure 20-85 psi
• 2 year extended warranty with registration. Lifetime support by certified WQA water specialist
• System comes with 100% Lead-Free designer faucet, odorless, chlorine-free clean water

Features :

• 𝐓𝐨𝐮𝐠𝐡 𝐛𝐮𝐢𝐥𝐝 𝐰𝐢𝐭𝐡 𝐩𝐫𝐞𝐦𝐢𝐮𝐦 𝐦𝐚𝐭𝐞𝐫𝐢𝐚𝐥𝐬: This under sink water filter’s housing and bottom cap are made from 304 stainless steel material, which is lead-free and food grade. The materials are corrosion- and compression-proof, making the filter safe and highly durable. The granular activated carbon block is made from natural coconut shells. Please confirm whether you are allergic to it.
• 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲-𝐛𝐚𝐜𝐤𝐞𝐝 𝐟𝐢𝐥𝐭𝐫𝐚𝐭𝐢𝐨𝐧 𝐬𝐲𝐬𝐭𝐞𝐦: You can recycle the filter housing while you change the internal filter when it expires. The activated carbon block is made from coconut shells and has a pore size of 0.5 microns. This water filter for sink can conveniently reduce of chlorine and other chemicals while reducing water scale, fluoride, hydrogen sulfide, and heavy metals. You can rest assured of great-tasting, odorless, and colorless water at all times.
• 𝐌𝐚𝐝𝐞 𝐭𝐨 𝐥𝐚𝐬𝐭 𝐟𝐨𝐫 𝐥𝐨𝐧𝐠: You can get up to 8,000 gallons of high-quality filtered water or 12-24 months of performance from the carbon filter in this water filtration system under sink. The exact output depends exactly on the local water quality. The ultra long filter life ensure that you will get effective chlorine reduction until the last drop. Now you can save money and effort by replacing the filter less frequently.For replacement filter, please search for B08X46N831
• 𝐅𝐚𝐬𝐭 𝐚𝐧𝐝 𝐜𝐨𝐧𝐬𝐭𝐚𝐧𝐭 𝐰𝐚𝐭𝐞𝐫 𝐟𝐥𝐨𝐰: The 3/8” quick-connect fitting included in the system offers a fast water flow of up to 1.6 GPM, ensuring that all your daily water needs are conveniently met.
• 𝐈𝐧𝐜𝐥𝐮𝐝𝐞 𝐚 𝐩𝐫𝐞𝐦𝐢𝐮𝐦 𝐝𝐞𝐝𝐢𝐜𝐚𝐭𝐞𝐝 𝐟𝐚𝐮𝐜𝐞𝐭: The BS08 undersink water filtration system comes with a 304 lead-free brushed nickel stainless steel faucet, features a dainty-shaped simplified design with dimensions 12 inches x 4.1 inches.

Features :

• Less than ＄29.99 per replacement filter (Search “B08Q3KXS3S “on Amazon), save over 40% of cost on subsequent use. 𝗘𝗮𝘀𝘆 𝗜𝗻𝘀𝘁𝗮𝗹𝗹𝗮𝘁𝗶𝗼𝗻 & 𝗛𝗶𝗴𝗵 𝗙𝗹𝗼𝘄 𝗥𝗮𝘁𝗲: Very 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 system installation, 2 sec filter change. No professional required. This system has a high flow rate, it can reach to over 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 for 20000 Gallons 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 material, ensure material safety.
• 𝟐𝟎𝟎𝟎𝟎 𝐆𝐚𝐥𝐥𝐨𝐧𝐬 𝐋𝐨𝐧𝐠 𝐋𝐢𝐟𝐞 & 𝐋𝐞𝐚𝐤-𝐟𝐫𝐞𝐞 𝐃𝐞𝐬𝐢𝐠𝐧: Tested by NSF/ANSI 42 for large filtration capacity of 20000 Gallons when used municipal water. 3x longer life than other filters, cheaper most bang for the buck. Recommend replace filter every 20000 gallons for 5 Years for better filtration. ICEPURE filter use advanced and precise measurement technology, combined with 3D multi-dimensional design technology to ensure that our products fully match and do not leak water.
• 𝐏𝐫𝐞𝐦𝐢𝐮𝐦 𝐌𝐚𝐭𝐞𝐫𝐢𝐚𝐥 : BPA-free and food-grade materials. ICEPURE Undersink Water Filtration System 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 to heavy metals, large sediments, and all other dangerous impurities.
• 𝐅𝐢𝐭 𝟏/𝟐” 𝐚𝐧𝐝 𝟑/𝟖” 𝐂𝐨𝐥𝐝 𝐖𝐚𝐭𝐞𝐫 𝐋𝐢𝐧𝐞 & 𝐌𝐮𝐥𝐭𝐢𝐩𝐥𝐞 𝐔𝐬𝐞𝐬: Only for COLD WATER LINE. Directly connect to the original faucet without countertop hole. Suitable for faucets with 1/2″ or 3/8″ FEMALENPT thread. A different connection type, please contact us BEFORE purchase. Can be quickly installed in your kitchen, bathroom, bar, RV or office to meet daily water needs. Ideal for drinking, cooking, making coffee, pets water, houseplants, humidifier, skincare, cleaning, etc.