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Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
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Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System

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$249.99 $329.99 $80 Off

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Dual Water Flow – Choose between RO-purified or mineral-enhanced alkaline water, with LED indicators for sterilization.

10-Stage Filtration – Reduces contaminants and adds healthy alkaline minerals for great-tasting water.

450GPD Flow & 2:1 Pure-to-Drain – Fast water flow with 800% less wastewater.

Smart Filter Reminder – Alerts for timely filter replacements.

Tankless Design – Saves 70% space and prevents contamination.

Fast, Free Shipping

30-Day Worry-Free Returns

1-Year Warranty

24/7 Customer Support

Services and Benefits

Enjoy swift doorstep delivery with every order at no extra cost. Our efficient logistics network ensures your purchases reach you quickly and reliably, so you can start using your new products without delay or hidden fees. Experience convenience that truly moves at your speed.

Shop with complete confidence knowing you have a full month to decide. If you're not satisfied for any reason, our straightforward return process makes it easy to send items back for a prompt refund or exchange—no complicated steps or hassles involved.

Your purchase is protected by an extensive one-year warranty covering manufacturing defects. This long-term commitment guarantees peace of mind and reflects our trust in the durability and quality of the products we offer to you.

Our dedicated support team is available around the clock, every day of the year. Whenever you need assistance, get immediate help via live chat, email, or phone for any questions, ensuring a smooth and supported experience whenever you reach out.

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In Stock—Estimated delivery in 3-5 business days.
$249.99
$329.99 $80 Off
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System
  • Overview
  • Specs
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  • Reviews
  • FAQs
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Upgrade Filtration: Go Healthier

    Ultimate Upgrade of RO System

    Enjoy better-tasting & instant pure water and user-friendly designs from now!

    • Get Better-Tasting
    • Instant Pure Water
    • Save More Space
    • All-In-One Cartridge

      Dual-Flow Alkaline RO System

      Enjoy clean RO water for safe drinking and alkaline water that helps balance body, improve digestion, and keep you hydrated — all in one system.

      • 10-Stage Filtration With Added Minerals
      • Quick Freshness, Enjoy Right Away
      • Effortless Strong Flow To Your Ice Maker & Fridge
        Dual Flow, Dual UV Sterilizer — Always Safe Drinking

        Dual Flow, Dual UV Sterilizer — Always Safe Drinking

        You're covered on every sip — Waterdrop's dual-flow RO system gives you double protection, with a UV sterilizer built into each line.

        Auto-Flush RO System, Smarter & Fresher

        Auto-Flush RO System, Smarter & Fresher

        Waterdrop WD-T4-A keeps your water fresh at all times, ensuring a consistently great taste.

        2:1 Pure to Drain, Saves 800% Water

        2:1 Pure to Drain, Saves 800% Water

        Waterdrop T4-A — your choice for water & environmental savings

        • Certification

          NSF/ANSI 372 Certified

          Reduced substances

          TDS, PFOA, PFOS, Chlorine, Fluoride, Barium, Salt, Chromium-VI, Lead, Heavy metals, Bad taste & odor and More Impurities *Tested by a third-party laboratory.
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        T4-A
        Specification
        T4-A
        Model
        T4-A
        Pure to Drain
        2:1
        Product Dimensions (In)
        16.54*6.22*17.95
        Product Weight (Ib)
        24.25 pounds
        Certification
        NSF/ANSI 372 Certified
        Filtration
        10-stage Filtration
        Capacity
        450GPD
        Faucet

        Smart Faucet

        Usage
        Indoor use only
        Electricity Required
        Yes

        In The Box (16)

        User Manual
        • T4-A Main Unit x1

          T4-A Main Unit

        • T4-A Filters x1

          T4-A Filters

        • Faucet x1

          Faucet

        • Power Adapter x1

          Power Adapter

        • Red 1/4" PE tubing x1

          Red 1/4" PE tubing

        • Blue 1/4" PE tubing x1

          Blue 1/4" PE tubing

        • Feed water adapter x1

          Feed water adapter

        • Drain saddle x1

          Drain saddle

        • Reference sticker x1

          Reference sticker

        • Teflon tape x1

          Teflon tape

        • Lock clips x6

          Lock clips

        Compare   T Series

        Compare
        T Series

        		Waterdrop T4-A 450GPD Alkaline Dual Flow Reverse Osmosis System

        T4-A

        $249.99
        $329.99 $80 off
        		Waterdrop T3-M 450G Remineralization RO Under the Sink Water Filter

        T3-M

        $199.99
        $279.99 $80 off
        		Waterdrop T3-C 450G Reverse Osmosis Water Filters for the Sink

        T3-C

        $189.99
        $279.99 $90 off
        Flow Rate
        Flow Rate 450GPD 450GPD 450GPD
        Alkaline Mineralization
        Alkaline Mineralization √ √ ×
        Pure to Drain
        Pure to Drain 2:1 2:1 2:1
        Faucet
        Faucet

        Smart Faucet

        Mechanical Faucet

        Mechanical Faucet

        Warranty
        Warranty 1 Year 1 Year 1 Year
        Certification
        Certification NSF/ANSI 372 Certified NSF/ANSI 372 Certified NSF/ANSI 372 Certified
        Product Dimensions (In)
        Product Dimensions (In) 16.54*6.22*17.95 13.39*6.22*17.95 13.39*6.22*17.95
        Product Weight (Ib)
        Product Weight (Ib) 24.25 pounds 20.06 pounds 20.06 pounds

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        Review

        Hear From Our Users

        Waterdrop users rave about the clean, crisp taste and health benefits of filtered water. Read their stories and see why they choose us.

        Hear From Our Users
        Trustpilot Review
        Trustpilot

        FAQ

        Curious about how the RO filter works? Our FAQ section covers everything from filter lifespan to installation tips for clean, pure water every day.

        Contact Us

        How does the dual-flow feature benefit me?

        You can switch instantly between standard RO-purified water for everyday drinking and an alkaline stream that adds beneficial minerals, perfect for coffee, tea, or anyone who prefers a smoother taste profile.

        Does the system keep water hygienic after filtration?

        Yes. Each water line has its own UV LED sterilizer that continuously disinfects the water as it leaves the filter, safeguarding freshness all the way to the faucet.

        Does it require a storage tank?

        No. The compact, tankless design prevents secondary contamination and frees up about 70 % more under-sink space compared with tank-based RO systems.

        Is installation complicated?

        No! The tank-free design make under-sink installation straightforward for most homeowners — no bulky tank to position or maintain.

        Will the alkaline stream affect beverage flavor?

        Yes — positively. The mineral-enhanced line can improve the taste and aroma of coffee, tea, and cooking water while still delivering contaminant-reduced purity.

        Learn More About T4A & Water Filtration

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