£320 Off
New Arrival
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
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Replacement Filter

Replace filter for continued contaminants removal and system performance.

  • CF Filter for Waterdrop G3P600 & G3 Reverse Osmosis System

    G3-N1CF Filter

    Provides up to 6 months or 550 gallons of clean water.

  • WD-G3-N3CB Filter for Waterdrop G3P600 & G3 Reverse Osmosis System

    G3-N3CB Filter

    Provides up to 12 months or 1,100 gallons of clean water.

Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800

£680.00 £999.98 £320 Off

Apply code in checkout to get £320 off

  • [Certified & Trusted Filtration]: Meets NSF/ANSI 42, 53, 58 & 372 standards for safe drinking water
  • [Advanced RO Filtration]: Reduces TDS and common contaminants for cleaner, fresher water
  • [Efficient 3:1 Ratio]: Produces 3 cups of purified water with only 1 cup of wastewater
  • [Smart Tankless Design]: Saves up to 70% of space with real-time TDS monitoring
  • [800 GPD High Capacity]: Fast, stable flow delivers 150 ml of water in 4.3 seconds
  • [UV Sterilisation]: Built-in UV LED light helps achieve up to 99.9% sterilisation

Fast, Free Shipping

30-Day Price Protection

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.

Enjoy worry-free shopping with our 30-day price protection. If the price drops within 30 days of your purchase, contact us and we’ll refund the difference according to our policy, helping you shop with greater confidence and value.

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.

Payment Method

  • VISA
  • Mastercard
  • American Express（AMEX）
  • Discover
  • JCB
  • PayPal
  • Elo
  • Klarna

Replacement Filter

Replace filter for continued contaminants removal and system performance.

  • CF Filter for Waterdrop G3P600 & G3 Reverse Osmosis System

    G3-N1CF Filter

    Provides up to 6 months or 550 gallons of clean water.

  • WD-G3-N3CB Filter for Waterdrop G3P600 & G3 Reverse Osmosis System

    G3-N3CB Filter

    Provides up to 12 months or 1,100 gallons of clean water.

In Stock—Estimated delivery in 2-4 business days.
£680.00
£999.98 £320 Off
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800
  • Overview
  • Specs
  • Compare
  • Reviews
  • FAQs
  • Replacements
Selling Points Main Image Selling Points Main Image
10-Stage Filtration

10-Stage Filtration

0.0001μm RO membrane

Purified Water Ratio
3:1

Purified Water Ratio

Save 1200% water

800GPD

800GPD

High flow rate

Authorized Certification

Authorized Certification

UV Sterilization

UV Sterilization

Water Tastes & Smells Unpleasant?

Reduces chlorine, taste, odor, rust, sand, sediments, and more for cleaner, fresher drinking water.

Taste Before
Taste After
Safety Before
Safety After
Flow Before
Flow After
Environment Before
Environment After

Upgrade Your Drinking Experience

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800GPD High Flow Rate

800GPD High Flow Rate

With an 800 GPD high flow rate, the system fills a 6 oz cup in just 5 seconds, delivering purified water instantly without long waiting times.

Waterdrop Animation Background
Discover Advanced Filtration Capacity

Discover Advanced Filtration Capacity

Enjoy pure and healthy water from now!

  • Enjoy Tankless Ease

    Enjoy Tankless Ease

    The compact tankless design saves up to 70% under-sink space while preventing secondary contamination, providing cleaner and more efficient filtration.

  • 800GPD Fast Filtration

    800GPD Fast Filtration

    With powerful 800 GPD filtration capacity, the system delivers purified water quickly and continuously, so you can enjoy clean water without waiting.

  • Smart Display Faucet

    Smart Display Faucet

    The smart display faucet shows real-time TDS levels and filter status, helping you easily monitor water quality for safer drinking.

Installation

Easy Installation in 30 Minutes

The Waterdrop G3P800 allows for easy 30-minute DIY installation with its all-in-one kit — no plumbing skills required.

Saves 1200% Water

Sustainability

Saves 1200% Water

Waterdrop G3P800 provides a sustainable and eco-wise water solution.

  • Reduces PFOA & PFOS by 99%

    Reduces PFOA & PFOS by 99%

    Advanced RO filtration helps reduce up to 99% of PFOA and PFOS, helping protect your family from harmful PFAS contaminants in drinking water.

  • 0.0001μm RO Filtration

    0.0001μm RO Filtration

    The 0.0001μm RO membrane effectively reduces over 1,000 contaminants including heavy metals, chlorine, and dissolved solids for cleaner water.

  • Automatic Flushing Design

    Automatic Flushing Design

    The automatic flushing system cleans the RO membrane regularly, helping prevent buildup and maintain stable filtration performance.

  • Certification

    NSF/ANSI 42, 53, 58 & 372 Certified

    Reduced substances

    Fluoride, PFOA & PFOS, TDS, Chlomium, Chlorine, Lead*, Taste & Odor*, Large Particles*, Heavy Metals*, Rust*, Sand*, Salt*, Nematodes*, Sediments*, VOCs*, and More Impurities* *Tested by a third-party laboratory.

    System Certified by IAPMO R&T to NSF/ANSI 42, 53 and 58 for the reduction of the claims specified on the Performance Data Sheet, and to NSF/ANSI 372 for low lead.

    View the Report
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More Details About Product

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  • wd-product-g3p800-new-vis-img27.jpg

REVIEW

Hear From Our Pros

Discover why experts trust the Waterdrop Undersink RO System! Enjoy purified water instantly, with space-saving convenience perfect for your kitchen.
G3P800
Specification
G3P800
Model
G3P800
Pure to Drain
3:1
Product Dimensions (cm)
46.00*14.40*45.03
Product Weight (kg)
14.70
Certification
NS/ANSI 42 & 53 & 58 & 372
Filtration
10-stage Filtration
Capacity
800GPD
Faucet
Smart Faucet
Usage
Indoor use only
Electricity Required
Yes

In The Box (15)

User Manual
  • System x1

    System

  • Replacement Filters x1

    Replacement Filters

  • RO Faucet x1

    RO Faucet

  • Power Adapter x1

    Power Adapter

  • UV Sterilizer x1

    UV Sterilizer

  • Feed Water Adapter3/8"-1/2" x1

    Feed Water Adapter3/8"-1/2"

  • Drain Saddle 1/4" x1

    Drain Saddle 1/4"

  • White 3/8" PE Tubing x1

    White 3/8" PE Tubing

  • Red 1/4" PE Tubing x1

    Red 1/4" PE Tubing

  • Teflon Tape x1

    Teflon Tape

  • Lock Clips x5

    Lock Clips

Compare  

Undersink RO

Compare
Undersink RO

Waterdrop 800 GPD Tankless RO System with UV Sterilizing Light G3P800

G3P800

£680.00
£999.98 £320 off
Waterdrop 600 GPD Fast Flow Reverse Osmosis System G3P600

G3P600

£379.99
£549.98 £170 off
Waterdrop X12 Alkaline Mineral Reverse Osmosis System - X Series

X12

£879.00
£1,299.00 £420 off
Flow Rate
Flow Rate 800GPD 600GPD 1200GPD
Alkaline Mineralization
Alkaline Mineralization × × √
Pure to Drain
Pure to Drain 3:1 2:1 3:1
Faucet
Faucet

Smart Display Faucet

TDS & filter life monitor

Smart Display Faucet
TDS & filter life monitor

Digital Control Faucet
TDS & filter life monitor
Adjustable water volumes

Filter Lifespan
Filter Lifespan

CF 6 Mths
CB 12 Mths
G3P800-RO 24 Mths

CF 6 Mths

CB 12 Mths

G3P600-RO 24 Mths

F1A 12 Mths

F2 6Mths

X12-F3 24 Mths

Warranty
Warranty 1 Year 1 Year 2 Years
Certification
Certification NS/ANSI 42 & 53 & 58 & 372 NSF/ANSI 42 & 58 & 372 NSF/ANSI 42 & 58 & 372
Product Dimensions (cm)
Product Dimensions (cm) 46.00*14.40*45.03 46.0*14.4*45.0 46.23*15.88*42.47
Product Weight (kg)
Product Weight (kg) 14.70 14.7 17.50
Model
Model G3P800 G3P600 X12
Filtration
Filtration 10-stage Filtration 8-stage Filtration 11-stage Filtration
Capacity
Capacity 800GPD 600GPD 1200GPD
Usage
Usage Indoor use only Indoor use only Indoor use only
Electricity Required
Electricity Required Yes Yes Yes

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Review

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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

What contaminants does the G3P800 RO system reduce?

Tested by a third party lab, Waterdrop G3P800 utilizes a 10-stage filtration process, effectively reducing impurities such as PFOA, PFOS, fluoride, heavy metals (e.g., lead, chromium, arsenic), salts (e.g., nitrate, chloride), and large particles.

How often should I replace the filters?

CF Filter: Every 6 months or after filtering 550 gallons, whichever comes first.
CB Filter: Annually or after filtering 1,100 gallons, whichever comes first.
RO Filter: Every 2 years or after filtering 2,900 gallons, whichever comes first.

Is the UV sterilizer necessary, and does it require regular replacement?

Yes, the UV sterilizer enhances water purity by reducing up to 99.9% bacteria. It features an advanced LED part with a long lifespan, requiring little to no maintenance over the years.

How easy is it to install the G3P800?

Waterdrop G3P800 under sink RO system enables easy DIY installation with clear step-by-step instructions and an instructional video for installation.

Replacement Filters

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