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
2,032 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 at 123filter DOT com / and lifetime personalized support line 678-261-7611 from Alpharetta, GA, 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
Sale# 2
APEC Water Systems ROES-50 Essence Series Top Tier 5-Stage Certified Ultra Safe Reverse Osmosis Drinking Water Filter System
388 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
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
899 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.
  • 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.
  • 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
Sale# 4
Express Water Reverse Osmosis Water Filtration System – NSF Certified 5 Stage RO Water Filter System with Faucet and Tank – Under Sink Water Filter – plus 4 Replacement Filters – 50 GPD, Model:RO5DX
599 Reviews
Express Water Reverse Osmosis Water Filtration System – NSF Certified 5 Stage RO Water Filter System with Faucet and Tank – Under Sink Water Filter – plus 4 Replacement Filters – 50 GPD, Model:RO5DX
  • 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 : Rest easy with our 1-year 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
Sale# 5
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.
201 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.
Sale# 6
Frizzlife Reverse Osmosis Water Filtration System - Countertop RO Water Filter, 4 Stage, Tankless, TDS and Filter Life Monitoring, Drain Water Recycle (Water Utilization 5:1), RO System Certified
20 Reviews
Frizzlife Reverse Osmosis Water Filtration System - Countertop RO Water Filter, 4 Stage, Tankless, TDS and Filter Life Monitoring, Drain Water Recycle (Water Utilization 5:1), RO System Certified
  • BEST-IN-CLASS REMOVING CAPACITY & PREMIUM QUALITY: Frizzlife RO water filter system removes up to 99.99% of over 1,000 contaminants, including LEAD, CHLORINE, FLUORIDE, Heavy Metals, mercury, chloramine, chromium, arsenic, radium, asbestos and much more. 0.0001um filtration accuracy Reverse Osmosis membrane guarantees the premium quality. Enjoy ultra-pure drinking water every time you press the button.
  • ECONOMIC & ENVIRONMENT-FRIENDLY: Backed by advanced drain water recycle technology, pure water to drain water ratio can reach to 5:1, it saves water waste up to 1500% compare to conventional RO systems, Promises almost every drop of ultra-pure drinking water is going to your glass. Low filter replacement costs mean each 330ml cup of RO water is much cheaper than bottled water in the same volume!
  • PORTABILITY & STYLISH DESIGN: Place and move Frizzlife countertop drinking water purifier to anywhere in need with power supply available, including office, kitchen, bedroom and more. The tankless, compact, modern and stylish design can nicely fit and match your décor and delight your countertop! You can press the button to select cup size of 150ml, 250ml, 330ml or continuous.
  • INSTALLATION FREE & EASY-TO-CHANGE FILTERS: The fully-assembled Frizzlife RO water filter requires ZERO installation, all you need is to plug it in. The twist-in filter system makes the filter replacement a breeze and NO TOOLS required. The hassle-free and tool-free installation and replacement save your time and energy of choosing a DIY water filter with messy hoses leaving you a headache task.
  • FORGET THE GUESSWORK: the built-in smart screen plays a role as a reliable and intelligent indicator. It clearly tells the real-time in and out TDS, as well as the remaining lifespan of each filter cartridge. The red ‘change water’ warning light will automatically turn on when it is time to refill your filling tank. Your worry-free life is our concern.
# 7
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
90 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
# 8
APEC WFS-1000 Super Capacity Premium Quality 3 Stage Under-Sink Water Filter System
363 Reviews
APEC WFS-1000 Super Capacity Premium Quality 3 Stage Under-Sink Water Filter System
  • High quality, designed, engineered and assembled in the USA; System built with US MADE super capacity filters for long lasting dependable filtration
  • Guaranteed to 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
  • 1 year satisfaction guarantee, with lifetime support by certified WQA water specialist based in CA
  • System comes with 100% Lead-Free chrome faucet, plus FDA certified JG food grade tubing to provide safe, odorless, chlorine-free clean water
  • Feed Water Pressure: 20-85 psi
# 9
Waterdrop RO Reverse Osmosis Water Filtration System, TDS Reduction, 400 GPD Fast Flow, Tankless, FCC Listed, 1:1 Drain Ratio, USA Tech Support, Model: WD-G2-B, Black
  • [Best value for your family]: Waterdrop G2 Under-Sink Reverse Osmosis Water Filtration System. The compact filters offer excellent performance, and due to the composite filters and formula, you won’t have to replace the filters in six months, as you would with other RO systems. The innovative tankless design saves space and ensures faster water flow and purer water.
  • [Advanced composite filters]: The composite integrated filters result in more effective filtration. The CF filter has a sediment PP membrane and an activated carbon block. It removes sediment, rust, large particles, colloids, chlorine, fluoride, scale, etc. The MRO filter includes a sediment membrane, a large reverse osmosis membrane, and an activated carbon block. It reduces more than 1, 000 contaminants, such as TDS and heavy metals.
  • [Innovative tankless design]: The new filter composition technology employs an excellent filter combination to more efficiently filter out impurities. The tankless design ensures the safety of your family’s drinking water. It also saves over 70% more under-sink storage space than does the ordinary RO system.
  • [Efficient purified water without waiting]: Through the combination of an internal pump and efficient filters, this RO system offers a fast water flow rate of up to 400 GPD. Get a cup of filtered water in about 12 seconds, satisfying your needs while saving time. Compared to the ordinary RO system, which has continuous water flow during the first two minutes, the Waterdrop RO system always has a stable water flow. Every drop of water you drink will be fresh.
  • [Integrated product design]: The advanced integrated design of the electrical and water circuits reduces leakage. The airtight housing reduces noise, while the process of installing and replacing the filter is faster and more convenient than with other filters. Due to the filters’ twist-and-pull design, you can replace them in 3 seconds. The installation of the Waterdrop G2 RO System takes less than 30 minutes.
  • [1: 1 low drain rate]: Compared to traditional RO systems, the Waterdrop G2 RO System uses an advanced RO membrane with a water flow rate of 400 GPD, saving over 60% of water and resulting in a 1: 1 drain rate. The RO system is ideal for small offices, restaurants, and cafes.
  • [Automatic notification system]: You don’t have to inspect the service life and filtration of the filters yourself, as the filter life indicators automatically notify you about the service life and usage.
  • [Special notice]: You must fully turn on the faucet and flush the RO system for 30 minutes after the installation process has been completed. During the flushing process, the light on the mainframe will flash. Once the process is complete, the blue light will stop flashing. During this process, the water will be undrinkable. However, you can use the undrinkable water for other purposes, such as watering your plants.
# 10
Express Water ROALK5D Reverse Osmosis Alkaline Water Filtration System – 10 Stage RO Water Filter with Faucet and Tank – Under Sink Water Filter – with Alkaline Filter for Added Essential Minerals – 50 GPD
207 Reviews
Express Water ROALK5D Reverse Osmosis Alkaline Water Filtration System – 10 Stage RO Water Filter with Faucet and Tank – Under Sink Water Filter – with Alkaline Filter for Added Essential Minerals – 50 GPD
  • 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
  • Alkaline Water Filter: Express Water’s Alkaline Water Filter with Active Mineral Technology adds Calcium, Potassium, Magnesium, and other minerals to 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 : Rest easy with our 1-year 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, Deionization Water Filter, and more
  • On Demand Support: Support from experts who can answer any of your questions about your new water filter

Buying guide
When it comes to selecting the right Water Filter Systems, you definitely want to research:

What makes any particular Water Filter Systems best?
How to choose the right Water Filter Systems within your budget?
What is the average price of a good Water Filter Systems?

Answering these questions is not simple as there are too many choices and too many data to process. In this particular situation our data analysis platform comes handy.

We analyze thousands of user reviews and products to generate usability score for each brand. This usability score considers product benefits, price and customer feedbacks to provide you with a unbiased list of Top 10 Best Water Filter Systems to buy.

You may read about our algorithm and process in detail at our about page. For any question or suggestion, do not hesitate to contact us.

We hope you love the products we recommend! Prices are accurate and items in stock as of time of publication. Just so you know, Fiveid may collect a share of sales or other compensation from the links on this page.