Express Water

10 Stage RO Alkaline Water Filter System with Faucet and Tank – Under Sink Water Filter – 100 GPD

182 reviews


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  • 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 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, Deionization Water Filter, and more
  • On Demand Support: Support from experts who can answer any of your questions about your new water filter
  • Make the purest alkaline mineral water with your own home alkaline water system. Great in the kitchen: Improve the taste of your cooking, coffee, ice, and drinks. Experience true Reverse Osmosis purification. Safe filtered fresh tasting H2O: Removes up to 99.99% of contaminants including Lead, Chlorine, Fluoride, Cyanide, Giardia, Radium, Asbestos, Calcite, Heavy Metal, Bacteria, Viruses, Pharmaceuticals, and other major contaminants.

    Get setup fast with our Quick Connect tubing system. Long lasting filters of the highest capacity standards mean you only need to change your filters every six months. Includes fast flow faucet with 0.8 GPM delivery.

    A compact system made to fit under a sink in a cabinet. Best for house, apartment, residential, well water, industrial, rv, machine, and office uses. Certified by an independent laboratory to NSF standard 58.

    Comes with 4 gallon (3.2 gallon water capacity) storage tank and tank stand. Your tank can sit upright or on it’s side to make sure it fits under most kitchen cabinets.  Includes all filters needed for setup and first 6 months of use. Can be wall / cabinet mounted or freestanding, made for indoor use. Can be installed undersink, in a basement, or other remote locations, you may need additional tubing or a delivery pump depending on how far away you plan to install or if you plan to link to a refrigerator as well. For every one gallon of water produced the system discharges between one and three gallons (depending on the pressure and quality of your incoming water).

    The system is compatible with 3/8" and 1/2" under sink connections. Includes filter housing wrench. Operates on 40-80 PSI water pressure, you may need a Booster Pump or Pressure Regulator depending on your water pressure.

    Make your water cleaner and more convenient than any pitcher, faucet filter, or countertop systems. Express Water’s 10 Stage Reverse Osmosis Water Alkaline Filtration System ROALK10DCG is the complete solution for your drinking water.

    UPC: 641990964134

    Customer Reviews
    4.9 Based on 182 Reviews
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    Filter Reviews:
    Thomas O.
    United States United States

    Under sink water filtration system

    We are a family of four, this is all we use when we need to use water for consumption. Our water without the system always smells of chemicals (chlorine) and we just can't stomache drinking it.. We don't like using the water in rooms other than the kitchen to brush our teeth or even take a shower as the smell and taste of the water without the system can be unbearable. We recently have purchased a shower head filtration system to help in the bathroom while taking showers. We feel confident that the water is clean and free of chemicals with this system. We have only had to tighten one of the filter casings once as it started to leak over time. We have had it about 6 months now and may have to change some of the filters , but the water flow is still substantial and it continues to work as intended.

    Renee M.

    High Quality

    RO systems aren't cheap but they are a great investment. They will save you money over time and could be a great boost to your health. Plus, the benefit of not having to leave your house for clean water during a pandemic can't be overstated.

    Paul A.


    The subtle way everything's color-coded (which makes installation very easy), the tasteful deliciousness of the water it produces...


    Best alkaline and filtered water,!!

    I bought this because it was alkaline. I installed it and did a test to check the alkalinity. Everything in the test confirmed that it was working. It's an excellent product.