Top 10 Best Water Filter Systems

# 1
iSpring RCC7AK 6-Stage Superb Taste High Capacity Under Sink Reverse Osmosis Drinking Water Filter System with Alkaline Remineralization-Natural pH, White
4,579 Reviews
iSpring RCC7AK 6-Stage Superb Taste High Capacity Under Sink Reverse Osmosis Drinking Water Filter System with Alkaline Remineralization-Natural pH, White
  • 6-Stage Alkaline Remineralization Layered Filtration: Exclusively designed to restore the natural alkalinity and mineral balance of water; this reliable and ultra-safe Reverse Osmosis (RO) water filtration system converts your water into clean, pure and healthy drinking water by removing up to 99% of over 1, 000 harmful contaminants like chlorine, fluoride, lead (removes up to 98%), arsenic, asbestos, calcium, sodium and more.
  • BENEFITS: The iSpring RCC7AK water softener includes an additional sixth stage - an Alkaline Remineralization filter which restores healthy minerals and produces a balanced alkalinity, which gives your water a more natural taste than regular 5 stage RO water filter; the RO membrane removes not only harmful pollutants but also a few helpful minerals. As a result, a standard 5 stage RO system produces slightly acidic water with a pH of 7. 0 or below
  • FEATURES: Beautiful European-Style kitchen faucet. Transparent 1st stage housing for easy visual inspection. Three extra long life pre-filters to remove large contaminants and protect RO membrane. Ultra fine (RO) filter to remove contaminants down to 0. 0001 microns; fine GAC filter to provide final polishing to the purified water and (AK) filter to finally restore just the right proportion of healthy minerals and a natural alkaline balance. The end result is great-tasting bottled-water quality
  • EASY DO IT YOURSELF INSTALLATION: The water purifier is designed for do-it-yourself installation and all necessary parts for installation are included, backed by clear, well-organized written instructions, instructional videos, and access to iSpring unparalleled technical support. The entire alkaline water filter fits nicely under a standard kitchen sink. For leak-free installation, simply push tubing ½ inch deep into quick-fitting connectors and lock; no threading pipes needed
  • 100% SATISFIED CUSTOMERS: RCC7AK from America’s favorite brand of under sink water filter is the No. 1 rated reverse osmosis systems in the USA backed by iSpring extended manufacturer upon registration and lifetime personalized support from GA, USA, combined with premium quality components, this water filter is to deliver endless bottled quality drinking water right in your home for many years to come, eliminating plastic bottles
# 2
APEC Water Systems ROES-50 Essence Series Top Tier 5-Stage Certified Ultra Safe Reverse Osmosis Drinking Water Filter System
2,187 Reviews
APEC Water Systems ROES-50 Essence Series Top Tier 5-Stage Certified Ultra Safe Reverse Osmosis Drinking Water Filter System
  • Supreme quality - designed, engineered, and assembled in USA to guarantee water safety & your health.
  • Only technology to 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
  • WQA Certified System. Premium long-lasting filters used to treat tap water, well water. Provide unlimited clean, refreshing crisp tasting water superior to bottled water
  • 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.
  • 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
  • 2 year extended manufacturer warranty with registration. System comes with all parts and industry's best instructions and videos for an easy DIY experience.
  • High quality leak-free quick connect fittings require no extra lock clips to seal leak, and does not rely on water leak detector to protect your home like other brands.
# 3
Waterdrop RO Reverse Osmosis Drinking Water Filtration System, NSF Certified, TDS Reduction, 400 GPD Fast Flow, Tankless, Compact, Smart Faucet, 1:1 Drain Ratio, UL Listed Power, USA Tech, WD-G3-W
747 Reviews
Waterdrop RO Reverse Osmosis Drinking Water Filtration System, NSF Certified, TDS Reduction, 400 GPD Fast Flow, Tankless, Compact, Smart Faucet, 1:1 Drain Ratio, UL Listed Power, USA Tech, WD-G3-W
  • Three filters are included in the package. Search "Waterdrop WD-G3-W Filter" for replacement filters
  • [NSF Certified performance]: The system is certified against NSF 58 for TDS reduction. Using reverse osmosis filtration technology with a filtration accuracy of 0. 0001μm, the system can effectively remove most contaminants including fluoride, TDS, limescale, and heavy metals in your tap water. System is also NSF 372 certified for lead free material
  • [Smart, easy-to-install design]: Waterdrop RO water filtration system is an innovative, all-in-one intelligent water purification system. In just a few minutes, Waterdrop RO system can be installed completely, and in just three seconds, the filter can be changed with one single turn. Installation is that easy
  • [The first composite filter element]: It is the first smart RO system with composite filters and tankless design in the U. S. market. The three filters provide seven stages of filtration. The pre-sediment and carbon block filter is a 3-in-1 filter that functions as that of three filters combined. The Reverse Osmosis membrane filter adopts an innovative design, and the efficiency of the filter equals more than three stages of filtration. Additionally, the activated carbon block filter uses high-precision activated carbon granules made from natural coconut shell, which will also improve the water taste
  • [No-tank design]: Use new composite filter element technology to more efficiently filter out harmful substances. The tankless design helps you avoid secondary pollution and enjoy more storage space in your kitchen
  • [No waiting for clean water]: Thanks to its internal pump, the RO system offers faster water flow (400 gallons per day). The system can filter a cup of water in about 12 seconds. It can produce pure water quickly, thereby meeting the needs of your whole family and even small companies
  • [1: 1 low drain ratio]: Compared to traditional RO systems, Waterdrop Reverse Osmosis Water Filtration System saves water waste by 300%. Save money on your water bills while running the RO system
  • [Special notice]: You must fully turn on the faucet and flush the RO system for 30 minutes after installation. The light on the faucet will flash blue during flushing, but once completed, the blue light will stop flashing. The total water capacity will be about 8. 5 gallons and the water will be undrinkable during flushing. To save water, be creative and collect the water for other purposes, such as watering plants
# 4
APEC Water Systems ROES-PH75 Essence Series Top Tier Alkaline Mineral pH+ 75 GPD 6-Stage Certified Ultra Safe Reverse Osmosis Drinking Water Filter System
1,725 Reviews
APEC Water Systems ROES-PH75 Essence Series Top Tier Alkaline Mineral pH+ 75 GPD 6-Stage Certified Ultra Safe Reverse Osmosis Drinking Water Filter System
  • Supreme quality - designed, engineered and assembled in USA to guarantee water safety & your health.
  • This 75 GPD 6-stage system ROES-PH75 is guaranteed to 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
  • US made cartridge uses food-grade calcium from trusted source for safe, proven water pH enhancement. Enjoy ultra-pure drinking water with added calcium minerals for improved ALKALINITY and great taste.
  • WQA certified system. Premium long lasting filters used to treat tap/well water. Provide unlimited clean drinking water.
  • 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 with registration. System comes with all parts and industry's best instructions and videos for an easy DIY experience.
  • System comes with 100% lead-free designer faucet, plus JG Food grade tubing and parts to provide safe, contamination-free pure water. High quality leak-free quick connect fittings require no extra lock clips to seal leak, and does not rely on water leak detector to protect your home like other brands.
# 5
Big Berkey Gravity-Fed Water Filter with 2 Black Berkey Purification Elements
887 Reviews
Big Berkey Gravity-Fed Water Filter with 2 Black Berkey Purification Elements
  • 2.25 GALLON CAPACITY- The portable Big Berkey Purification System effortlessly purifies water for about 1-4 people each day. Add additional Black Berkey Purification Elements (the Big Berkey System can hold a maximum of four) to increase the flow rate. The system is just 19.25” tall and 8.5” in diameter.
  • POWERFUL PURIFICATION- Berkey systems equipped with Black Berkey Purification Elements purify water—not just filter it—by removing greater than 99.999% of viruses and greater than 99.9999% of pathogenic bacteria, while also removing or dramatically reducing protozoa (such as giardia and cryptosporidium), trihalomethanes, inorganic minerals, heavy metals (including arsenic, lead, mercury, chromium), pharmaceutical drugs (including caffeine, Acetaminophen, Ibuprofen, Progesterone, Triclosan),
  • ECONOMICAL, LONG-LASTING- A pair of Black Berkey Purification Elements lasts for up to 6,000 gallons before needing replacement. Each additional pair of elements (sold separately) adds an additional 6,000 gallons of purification power to your system. Black Berkey Purification Elements average just 2 cents per gallon of purified water.
  • INDEPENDENT TESTING- Berkey by NMCL uses several independent third-party labs to test a broad range of potential contaminants and conducts Extreme Testing for lead and PFCs in order to show the effectiveness of our Black Berkey Purification Elements.
  • DRINK CONFIDENTLY VIRTUALLY ANYWHERE- No electricity, tools or plumbing required. Travel the world, prepare for emergencies, and take control of your family’s everyday drinking water with your Berkey gravity-fed water filtration system with Black Berkey purification elements. Enjoy delicious, nourishing water from the leader in gravity-fed water solutions.
# 6
Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Replacement Filters – 50 GPD, 14 x 15 x 5
1,781 Reviews
Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Replacement Filters – 50 GPD, 14 x 15 x 5
  • 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.
  • 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
  • Help Has Arrived - Support from experts who can answer any of your questions about your home’s water
  • Love your water - Environmentally friendly coconut carbon filters give unequalled quality and a clear natural taste
# 7
Royal Berkey Gravity-Fed Water Filter with 2 Black Berkey Purification Elements
551 Reviews
Royal Berkey Gravity-Fed Water Filter with 2 Black Berkey Purification Elements
  • 3.25 GALLON CAPACITY- The portable Royal Berkey Purification System effortlessly purifies water for about 2-4 people each day. Add additional Black Berkey Purification Elements (the Royal Berkey System can hold a maximum of 4) to increase the flow rate. The system is just 23” tall and 9” in diameter.
  • POWERFUL PURIFICATION- Berkey systems equipped with Black Berkey Purification Elements purify water—not just filter it—by removing greater than 99.999% of viruses and greater than 99.9999% of pathogenic bacteria, while also removing or dramatically reducing protozoa (such as giardia and cryptosporidium), trihalomethanes, inorganic minerals, heavy metals (including arsenic, lead, mercury, chromium), pharmaceutical drugs (including caffeine, Acetaminophen, Ibuprofen, Progesterone, Triclosan),
  • ECONOMICAL, LONG-LASTING- A pair of Black Berkey Purification Elements lasts for up to 6,000 gallons before needing replacement. Each additional pair of elements (sold separately) adds an additional 6,000 gallons of purification power to your system. Black Berkey Purification Elements average just 2 cents per gallon of purified water.
  • INDEPENDENT TESTING- Berkey by NMCL uses several independent third-party labs to test a broad range of potential contaminants and conducts Extreme Testing for lead and PFCs in order to show the effectiveness of our Black Berkey Purification Elements.
  • DRINK CONFIDENTLY VIRTUALLY ANYWHERE- No electricity, tools or plumbing required. Travel the world, prepare for emergencies, and take control of your family’s everyday drinking water with your Berkey gravity-fed water filtration system with Black Berkey purification elements. Enjoy delicious, nourishing water from the leader in gravity-fed water solutions.
Sale# 8
Frizzlife Under Sink Water Filter System-High Capacity Direct Connect Under Counter Drinking Water Filtration System-0.5 Micron Quick Change Removes 99.99% Lead, Chlorine, Bad Taste & Odor.
1,793 Reviews
Frizzlife Under Sink Water Filter System-High Capacity Direct Connect Under Counter Drinking Water Filtration System-0.5 Micron Quick Change Removes 99.99% Lead, Chlorine, Bad Taste & Odor.
  • ✔TWO-STAGE ADVANCED WATER PURIFIER WITH 0.5 MICRON: The Frizzlife MK99 Water Filtration System include a TWO-STAGE High precise compoud filter, which has a unique technology that removes over 99.99% of contaminants while leaving in all essential minerals. Eliminates LEAD, HEAVY METALS, CHLORINE, CHROMIUM 6, MERCURY, RUST, VOLATILE ORGANIC COMPOUNDS, CARCINOGENS, AND OTHER CONTAMINANTS, SUCH AS TURBIDITY, ORDORS AND BAD TASTES. Enjoy PURE AND HEALTHY WATER From the tap. NO more bottle water!
  • ✔FITS BOTH 1/2" AND 3/8" COLD WATER LINE: Super EASY Installation. Come with 3/8" DIRECT CONNECT hoses that fits standard 3/8" feed water valves under US kitchen sinks. The Inline water filter system also come with a 3/8" to 1/2" converter fittings allow the system directly install to the existing both 1/2" and 3/8" cold water line and faucet under your sink. Took less than 3 minutes and NO PLUMBING REQUIRED! New installation video available.
  • ✔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 quick twist connection for easy, tool-free, no mess filter replacement. The filter cap is designed with BUILT-IN shut off valve. You don't even need to shut off the water supply whenever you work on the filter cartridge replacement.
  • ✔HIGH FLOW RATE & MULTI-USAGE: Enjoy tap water as pure and healthy as spring fresh water. Tested Full Flow Rate >2.0GPM @40 psig. Good for cooking, washing fruits & veggies and cleaning dishes without watermarks.
  • ✔MONEY SAVING & 100% SATISFACTION: The under counter water filter system contains a core filter cartridge inside the housing, you will only need to replace the core part of the filter cartridge instead of throwing away the whole plastic part, it will save you much money on replacing the cartridge and will do a lot of helps on the environmental protection. Each cartridge with high capacity can be used for 2 years or 1,600 gallon water, for better filtration, suggest to replace after 6-8 month.
# 9
CuZn UC-200 Under Counter Water Filter - 50K Ultra High Capacity - Made in USA
2,691 Reviews
CuZn UC-200 Under Counter Water Filter - 50K Ultra High Capacity - Made in USA
  • INCREDIBLE CAPACITY/LIFETIME: Up to 5 Years per filter! CuZn Backs The UC-200's Long Lasting Performance with a Comprehensive 5 year Pro-Rated Performance Warranty and 90 day Satisfaction Guarantee. The UC-200 is Designed for use with MUNICIPAL WATER ONLY - DO NOT USE WITH PRIVATE WELL WATER. The UC-200 is a Water Purification System, it is NOT A WATER SOFTENING SYSTEM. The CuZn UC-200 will not resolve issues caused by water being excessively hard (such as lime scale mineral deposits).
  • NO THIRD FAUCET HASSLE & SIMPLE TO INSTALL: Connects Directly to your Kitchen Sink's Cold Water Line. Only Takes a Few Minutes. All You will Need is an Adjustable Wrench for Tightening Connections. NEW Install Video Instructions Available, See Product Description for Details. QUESTIONS or NON-STANDARD Under Counter Plumbing!? Send us an Email or Call CuZn's Customer Support Team @ 800.345.PURE (7873)
  • 3 STAGE FILTRATION PROCESS: Micro Sediment Membranes, KDF-55 & Coconut Shell Carbon. The UC-200's Process Purifies the Water Without Removing Health Beneficial Hardness Minerals, The UC-200 DOES NOT REDUCE TDS READINGS, a PPM or TDS Meter is NOT Effective for testing. To Monitor The UC-200 with Testing, Utilize DPD#1 Chlorine Test Strips and Replace when Chlorine Breakthrough is Detected. Want TDS Removal? Search ASIN# B019N7VG1W on Amazon to View CuZn's Reverse Osmosis System.
  • BACTERIOSTATIC FILTRATION SYSTEM: Unlike Carbon Only Filters, The UC-200 is Bacteriostatic and Not Susceptible to Mold or Bacteria Growth
  • COMPREHENSIVE SUPPORT POLICY: The UC-200 is Fitted with 3/8" Male Compression Inlet/Outlet Fittings & comes with a 36" Long 3/8" x 3/8" Braided Stainless Steel Compression Hose. Have Non-Standard Plumbing or an Alternative Install in Mind (such as dedicated filtered water only faucet)? Contact Customer Support, We'll Supply an Install Kit for All Non-standard Installations at No Additional Cost to You!
Sale# 10
Express Water UV Reverse Osmosis Water Filtration System – 11 Stage UV Water Filter with Faucet and Tank – Under Sink Water Filter with Alkaline Filter for added Essential Minerals – 100 GDP
537 Reviews
Express Water UV Reverse Osmosis Water Filtration System – 11 Stage UV Water Filter with Faucet and Tank – Under Sink Water Filter with Alkaline Filter for added Essential Minerals – 100 GDP
  • 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 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
  • 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 Alkaline UV water filter system, 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
  • On Demand Support: Support from experts who can answer any of your questions about your new water filter
  • Included Components: Ultraviolet Sterilizer Uv Bulb 4 Gallon Water Storage Tank Tank Valve & More

Buying guide
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