Best Ge Under Sink Filtration in 2026

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

Superior Material: With a filtration accuracy of 0.01 μm, the Ultrafiltration membrane filters out most of baçtёria larger than 0.01 μm. Activated carbon block and other advanced filter media ensure efficient and safe filtration. Specially selected premium materials are lead-free. The BPA-free, lead-free material ensures more reliable use from the inside out. The activated carbon is made from natural coconut shells. Please confirm whether you are allergic to it.

Innovative Multistage Filtration: The Waterdrop Direct Connect Under Sink Water Filter System uses innovative multistage filtration. The system effectively reduces chlorine, taste and odor. And it can effectively reduces heavy metals, chemical iṁpurity, sediment and other large particles.[1] Tested by third party laboratory against NSF/ANSI 53 standard it can reduce lead. No need to buy bottled water anymore!

Premium Dedicated Faucet: The under sink water filter system comes with a lead-free brushed stainless steel faucet, providing you with access to clean water throughout the day. For separate drinking faucet you already have, WD-15UC-UF system ( Search ASIN: B085G9TZ4L ) would be a better choice.

MAXIMUM LEVEL FILTRATION - This system reduces 99% lead, 99% microbial cysts, 97% chlorine taste and odor, plus 0.5 microns of sand, sediment, rust, and soil

QUICK INSTALLATION - This system installs in less than 30 minutes

USES EXISTING FAUCET - Filter water right at the sink without having to install an entirely separate faucet

[Two-stage Advanced Water Filter With 0.5 Micron]: The Frizzlife MP99 Water Filtration System includes a TWO-STAGE High precise compound filter including a unique technology that reduces contaminants while leaving in all essential minerals. Certified to reduce Lead, Chlorine, Taste & Odor and Particulates. Enjoy healthy water from the tap.

[Dedicated Faucet & Brass Feed Water Adapter Valve Included]: Frizzlife Undersink water filtration system includes a dedicated stainless steel faucet that can be installed in most sinks providing cleaner filtered water for cooking or drinking. NO plumbing would be required. it comes with a 3/8" compatible brass feed water adapter, brackets, and STEP-TO-STEP Installation manual, you can mount the water filter as you wish within 10 minutes.

[Best Auto Shut Off Design]: Utilizing quick change twist-in installation design makes it take less than 3 minutes for you to install the system or doing a filter replacement. Provides for easy, tool-free, no mess filter replacement. The filter cap is designed with a BUILT-IN shut off valve. You don't even need to shut off the water supply whenever you work on the filter cartridge replacement.

[Classic Drinking Filter]:The water flows through PP sediment filtration, dual CTO carbon filtration, and the 2nd layer contains unique CTO filtration. It removes common sediments in drinking water, like dust, sand, particles, dirt and rust. Effectively removes heavy metals, harmful chemicals, cloudiness, colors and more. It removes not only harmful pollutants but also chlorine taste and odor.

[Fresh Healthy Water Supplier]: The on-demand fast flow rate of the iSpring US31 allows it to meet the widest possible range of needs in your home. Up to 20x more effective than the common water pitcher dispenser. Flow Rate: Up to 1GPM depending on source water pressure. Maxim Pressure: 90psi. It washes fresh produce like fruit and vegetables, brings health protection, can provide your entire family with delicious, clean water straight from your tap.

[Excellent Quality and Design]: Features beautiful European-designed brushed nickel all-metal faucet and clear see-through 1st stage housing. Clear see-through 1st stage housing makes filter inspection a snap. Manufactured to comply strictly with FDA standards and tested by independent third party against NSF/ANSI standards (42, 53, 61) for water quality, material safety and structural integrity.

Reverse Osmosis Water Filter: Experience what water should taste like with the Express Water reverse osmosis water filtration system removing up to 99. 99% of Lead, Chlorine, Fluoride, Nitrates, Calcium, Arsenic, Bacteria, and more

UV Water Purification System: Powerful UV Sterilization eliminates microorganisms like coliform, E. Coli, viruses, bacteria, microorganisms, and more from your drinking water

Alkaline Water Filter: Alkaline Filtration System with Active Mineral Technology adds Calcium, Potassium, Magnesium, and other minerals to your body needs right in your water

❄️ 【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.

💧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.

Replacement Filter For The Advanced Main Faucet Under Sink Water Filter System (AO-MF-ADV) - Easy replacement and no plumber necessary. Includes one Claryum filter. Does NOT fit AO-MF, AO-FF, or AO-MF-B filter systems.

Advanced Filtration - Reduces up to 99% of 77 harmful contaminants including lead, mercury, asbestos, pesticides, pharmaceuticals, chlorine, and more.

Claryum Filtration Reduces Harmful Contaminants – those you can see, smell and taste, and those you can’t – for optimally clean water.

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.

Please make sure your filter model is 3US-PF01 and distinguish it from other similar filters. The Filterlogic water filter is certified by NSF/ANSI 42 and 372 standards.

Provides 6 months or 15,000 gallons of refreshing water for the average household. Retains beneficial minerals to produce healthy drinking water, works exactly like the original filter without water leaks.

The innovative design and advanced materials reduce chlorine, mercury, rust, sediment, heavy metals, suspended particles and 20+ Contaminants from your water source, leaving you with healthier water and a cleaner, fresher taste.

[Anti-Clogged]: Pleated filter anti-clogged, 10x capacity 10x life time; 0.5μm filtration, imporve taste & reduce heavy metals and more (99.99% Chlorine, Lead, Odor, Smell, Color, VOCs, Sand, Rust, Sediment,ect.); Meet NSF/ANSI 42 & 53 standard;

[Quick Change & Quick Connection]: Quick-change disposal filter and quick connect system, 5mins to install; Include 1/2"-3/8" converters to fit kitchen water line and faucet; Food-grade, BPA-free;

[Compact but long-lasting]: 3x12.5"inch compact & space-saving; 4K Gallons long-lasting filter cartridge; Fits for US kitchen, bathroom, coffee machine, refrigerator, icemaker and small space;

Dual flow water filtration: Filtered water direct from your kitchen faucet. Filtered water faster - 1.1 gallons per minutes, compared to other systems

Chrome filtration controller with filter replacement indicator: Filtered water when you want it. Controller easily turns filtered water on/off. Filtered water for drinking and cooking made easy

NSF certified: Reduces select pharmaceuticals, select VOCs, lead, chlorine taste and odor and other contaminants

【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 Chlorine, Taste and Odor. Its KDF materials can effectively reduce bäcteriä and 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.

Reduces 99% lead, chlorine taste & odor, chloramine, particulate class i, asbestos, cyst, mercury, turbidity, and select pharmaceuticals

For use with any kitchen, bathroom, or beverage faucet

Double cartridge system retains your faucet's water flow rate with no performance drop-off, 1. 70 gpm (gallons per minute) maximum flow rate at 60 psi

Easy DIY Under Sink Filter Installation - Install on any cold water line, no dedicated faucet required, no need to drill a hole in any countertop. Unit measures 4 x 4 x 20.5 inches.

Clean & Healthy Water Filtration - Carbon filter removes up to 99% of 77 contaminants including lead, mercury, asbestos, herbicides, pesticides, pharmaceuticals, and more!

Retains What Makes Your Water Healthy - Filters out harsh contaminants while retaining naturally-occurring minerals like calcium, magnesium, and potassium. Does not reduce TDS.

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 800 gallons before a replacement filter is needed.

The Mist Under-sink under counter water filter system is an effective, eco-friendly, affordable and DIY way to filter the water that comes from your tap. When used with municipal water, the system has a service life of 20,000 Gal. or 2 years.

Tested and certified against NSF/ANSI 42 by IAPMO R&T. Filters out 99.9% of chlorine, removes odors and significantly improves taste.

Compatible with most standard sinks and plumbing systems. Includes one 1/2” FIP to 3/8” compression adapter and one 3/8” compression to 1/2” FIP adapter. (Full packaging contents can be found below)

💎 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. 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

💎 5 MICRON SEDIMENT CARTRIDGE is wrapped and sealed and meets NSF Standards and Regulations. Dimensions: 10” x 2.5”. WELL-MATCHED: PFC5002,DuPont WFPFC5002, 3M CFS110, AP110-NP, AP101S, AP101T, Aqua Pure AP110, AP11T, AP51T, Hydronix SGC-25-1005, Culligan P5, P5-D, P5A, OmniFilter RS14, RS14-SD, RS14-DS and RS14-SS, GE FXUSC, Aquaboon 25S-5M, Manitowoc K-00173, Whirlpool WHKF-GD05, American Plumber W5P, Pureplus PP10-05

💎 5 MICRON BLOCK CARBON CARTRIDGE is wrapped and sealed and meets NSF Standards and Regulations. Dimensions: 9.875” x 2.5”. WELL-MATCHED: Watts Premier MAXETW-975, DuPont WFPFC8002, SCWH-5, Whirlpool WHA2BF5, Water Filter Tree WWC105, 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

Individually wrapped high capacity filter replacement cartridge pack for iSpring 7-stage RO systems

Experience clean, safe, and good-tasting water every time you turn on the faucet. Enjoy crystal clear ice cubes, fresher tea and coffee, better tasting foods, healthier baby formula – even better than most bottled water

75 gpd RO membrane for superior performance with TDS rejection rate up to 97% (under NSF58 testing condition)

Replacement under-sink quick change water filter for clean, great tasting water right from the faucet

Includes a water filter replacement for Filtrete Advanced Under-Sink Quick Change Water Filter

Replacement for Filtrete Advanced 3US-PF01, 3US-MAX-F01H, 3US-PF01H, Manitowoc K-00337, K-00338, K00337, K00338, Delta RP78702

2-STAGE FILTRATION SYSTEM improves water quality by removing contaminants as small as 0.5 microns so you can enjoy clean, great-tasting water – OVERALL DIMENSIONS: 9 1/2“ L x 4 7/8“ W x 15 1/2“ H – CARTRIDGE DIMENSIONS: 3 3/4“ D x 13 1/4“ H – LONG-LASTING CARTRIDGES filter up to 700 gallons of water and last up to 6 months – KIT INCLUDES: manifold, carbon filter, polypropylene filter, quick-connect, tee-adapter, mounting hardware, 1/4“ tubing, AAA Batteries

2-FILTER SYSTEM: Polypropylene Filter eliminates larger particles like dirt and rust – Carbon Block Filter targets nano-particles like lead, eliminating odors and improving taste – Independently certified to REMOVE 98% OF LEAD, as well as select pharmaceuticals, VOCs, chlorine odor and taste, and other impurities found in municipal and well water – GREATER CAPACITY than standard pitcher-style systems – COMPATIBLE with any filter faucet with standard 1/4” connections

EASY FILTER REPLACEMENT: Cartridges install with a simple twist and lock quarter-turn mechanism – DIGITAL DISPLAY monitors water quality, battery life, and filter status – Maximizes filter life and notifies you by beeping when cartridges are down to 10% and a replacement is required – ECO-FRIENDLY PRODUCT reduces waste while saving you money on single-use plastic water bottles – Provides as much clean water as 5,300 standard 16.9 oz. Bottles – COMPACT DIMENSIONS offer more room in the base cabinet

Large capacity: AquaEasy water filtration system has a large capacity of 2.25 gallons, which can meet the needs of a family of four. It is perfect for kitchens, apartments, camping, RV’s or anywhere in the field.

High efficiency filtration: The Aqua Easy gravity water filter system uses natural coconut shell activated carbon to remove a variety of impurities from water. This ensures that you are drinking clean, healthy water. Improves taste Stainless steel gravity-fed water filters can improve the taste of water.

Energy-saving design: This gravity filtration system does not require electricity. It is divided into two layers, with the upper layer for unfiltered tap water and the lower layer for filtered water. Two carbon filters (black) can effectively filter up to 6000 litres of water.

US Local Service: 3-year warranty on the essential part like pump and 1 year for other accessories on the drinking water system (Filter not included). Local customer service with phone call and online service with quick response time less than 1 day. NOTE: This unit needs AC power supply.

600 GPD Flow & 2:1 Waste Ratio: Ro system has a high capacity of 600 Gallons per day, which can fill a glass of 220ml water in 8 seconds and serve the daily water demands of a large family. With 2:1 pure to drain ratio, it saves 600% more water and save a lot for your water bills. (Note: The drain water can be collected and used for other purposes, such as cleaning house, doing laundry, etc.)

2 Filtration Options: Reverse Osmosis water filtration system has 2 filtration options, fulfilling more usage scenarios. Filtered water is power free and no waste water. Pure water has 90% TDS Reduced. You can enjoy high quality water in every aspects of your daily water use.

CUTTING EDGE FILTRATION – This Advanced Technology water filter offers high level particulate reduction as well as chemical reduction including PFOA and PFAS. Particulate matter in water is very small, so small you typically can’t even see it! The physical structure of the HV-DWSP-FF filter media is so tight, it can remove particles smaller than 1 micron!

QUICK CONNECT FILTER DESIGN – Makes filter changes as easy as turning a doorknob. Just a 1/4 turn disengages the filter from the head assembly. Installing the replacement filter is just as easy! Replacement Filter is HV-DWSP-FFR. Also can use HV-DWSS-FFR.

NSF/ANSI CERTIFIED – HV-DWSP-FF is FULLY CERTIFIED by IAPMO R&T against NSF/ANSI Standard 42 for the reduction of particulate matter and chlorine taste and odor, NSF/ANSI Standard 401 for the reduction of trace pharmaceuticals AND NSF/ANSI Standard 53 for the reduction of PFOA and PFAS, as well as Lead and waterborne Cysts like Cryptosporidium and Giardia. Be Careful! - Not all manufacturers carry full certification. Trust HYDROVOS for accurate and truthful certification information.

Mist MFC092 Water Filter Replacement for Under sink Filtration Systems, Replaces MFS092, Compatible with WFS5300A, WFC5300A.

Tested and certified by IAPMO against NSF/ANSI 42 to filter out 99.9% of chlorine, removes odors and significantly improves taste

Long-lasting. For best filtration results, each filter cartridge should be replaced every 2 years or after 20,000 gallons of use.

This easy install water filter fits the GXK140TNN and GXULQK systems

Advanced filtration reduces lead, chlorine taste and odor, sediment, cysts, PFOA/PFOS

6-month filter life compatible under sink water filters last up to 6-months or 240 gallons

Under sink reverse osmosis filtration - Premium filtered water where you need it most

Filters down to 0.5 microns - The lower the microns, the more contaminants are caught and reduced

Double pack- Includes two filter cartridges

Warm Tip: This system isn't a Reverse Osmosis water filtration system and does NOT lower TDS(PPM).From the point of view of drinking health, It also retain beneficial materials about human health like potassium, magnesium, and calcium in the water, thus it cannot lower TDS value. TDS (PPM) Values does not represent water quality!

SUPERIOR PERFORMANCE - The advanced 5-stage design, which includes both Ultrafiltration and PF/CF/CB/SF stages, removes up to 99% of chlorine and chlorine treatment by-products, lead, arsenic, the filtration process will keep minerals such as calcium, magnesium, and potassium that benefit your health.

5-STAGE ULTRA FILTRATION SYSTEM - PF Sediment Filter ((5 microns) removes large-sized particles, and intercepts suspended impurities. ) Ultra Filtration Filter (contains hollow fiber membrane technology with a pore size of just 0.01 microns. ) CF and SF Filter (Remove unpleasant chlorine taste odor, cloudiness, and coloring, heavy metals, and other compounds). Fine Activated Carbon Filter (Remove dirt, sand, silt, rust, and scale particles and absorbs THIMS).While improving the water's taste.

✅ 7 Stages Filtration: Reverse osmosis system under sink has 7 stages filtration to reduce 1000+ contaminants and improve taste of water. The RO filter(3 Stages) + PP(1 Stages)+C(3 Stages) adopts 0.0001-micron reverse osmosis membrane to decrease TDS from 500 ppm to 15 ppm and intercept sand, particles, salt, PFAS, fluoride, heavy metals, vinyl chloride, ethylhexyl acrylate, isobutylene, ethylene glycol.

✅ User-friendly: Compared to other traditional RO Systems with a tank and too many connectors/pipes, the integrated molding design reduces leakage, and noise & speeds up installation within 10min and filter changes within 3s for hassle-free operation.

✅ NSF Certified & Maintenance: RO water filter system meets NSF standard, so the TDS removal rate is certified up to 91.9% and the heavy metal reduction rate is certified up to 96.9%. Replace the RO filter every 2 years(34/Year), and the C filter(18/Year) and PC filter(20/Year) annually. [Search RO: B0C4YJFVY4] [Search PC: B0C4YD8P74] [Search C: B0C4YDYPL4] Check NSF: https://m.media-amazon.com/images/I/A1WKWcjC8pL.pdf