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800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
£300 Off
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800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800

800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800

Waterdrop
Regular price
£699.99
£1,000.00
£300 Off
Sale price £1,000.00 Regular price
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WDG3P800
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Key Features
  • Certified & Trusted Filtration
    Independently tested and certified by IAPMO R&T to meet NSF/ANSI 42, 53, 58 & 372 standards, ensuring safe, reliable drinking water for everyday use in UK households.

  • Advanced RO Filtration
    This reverse osmosis system effectively reduces TDS and common contaminants, delivering consistently clean, fresh-tasting water for daily drinking and cooking.

  • Efficient 3:1 Pure-to-Drain Ratio
    Using advanced dispensing technology, the system produces three cups of purified water with just one cup of wastewater, helping reduce water waste compared to traditional RO systems.

  • Smart & Space-Saving Design
    The sleek tankless under-sink design saves up to 70% of space. The smart digital faucet displays real-time TDS levels for easy daily monitoring.

  • 800 GPD High-Capacity Performance
    With a capacity of 800 gallons per day, the system delivers fast, stable water flow, producing a 150 ml cup in just 4.3 seconds—ideal for busy households.

  • UV Sterilisation for Extra Protection
    A built-in UV sterilising LED light activates automatically during water flow, helping achieve up to 99.9% sterilisation for added peace of mind.

1 Year Warranty
Covered by a 1-year warranty, providing dependable support and peace of mind for everyday home use.
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Overview
Specs
Compares
Reviews
FAQs
Replacements

800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800

Overview
Specs
Compares
Reviews
FAQs
Replacements
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
Add - £699.99
Overview
Specs
Compares
Reviews
FAQs
Replacements
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Smart touch screen

10-Stage Filtration

0.0001μm RO membrane
2:1
3:1

Pure to drain ratio

Saves 1200% water
Composite filter

800GPD

High flow rate
30-min Easy Installation

Authorized Certification

Smart Display Faucet

UV Sterilization

G3P800
Is
Designed
For

Pure Drinking
Suggested Family Size:
Water Tastes & Smells Unpleasant?




Upgrade Your Drinking Experience
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800GPD High Flow Rate

Fills a 150ml cup in 4.3s.
Cool Now, Hot Instant

Discover Advanced Filtration Capacity

Enjoy pure and healthy water from now!

More Features
Enjoy Red Dot Award-Winning Tankless Ease
Quick & Easy: 30-min DIY installation; Compact & Stylish: Saves 70% under-sink space
800GPD Fast Filtration
Get pure water instantly — no long waits.
Smart Display Faucet
Visible water status for worry-free drinking
3s Filter Replacement
Easily replace with a simple twist, no tools required.
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Guards for Your Safe & Healthy Drinking
Reduces PFOA & PFOS by 99%
For your healthier life
0.0001μm RO Filtration
Reduces 1000+ impurities for pure drinking
Automatic Flushing Design
Ensures no wastewater residue
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.
Sustainability
Saves 1200% Water
Waterdrop G3P800 provides a sustainable and eco-wise water solution.
Sustainability
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.
Sustainability
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Media Attention

Waterdrop (G3P800) is NSF 58 certified, one of the highest standards, so it can stand up to everything from heavy metals to pharmaceuticals to PFAS.
Ranked as one of the best reverse osmosis systems, the Waterdrop tankless model has high output for large households.
The Waterdrop G3P800 is a multi-certified cutting-edge tankless reverse osmosis water filtration system that packs a lot of modern, advanced features, including a space-saving design, a large filtration capacity, a smart LED reminder, and upgraded filtration capabilities.
The G3P800 reverse osmosis system a total of 800 gallons per day, making it one of the fastest water filtration systems on the market. Furthermore, it maintains a 3:1 pure-to-drain ratio.
Waterdrop (G3P800) is NSF 58 certified, one of the highest standards, so it can stand up to everything from heavy metals to pharmaceuticals to PFAS.
Ranked as one of the best reverse osmosis systems, the Waterdrop tankless model has high output for large households.
The Waterdrop G3P800 is a multi-certified cutting-edge tankless reverse osmosis water filtration system that packs a lot of modern, advanced features, including a space-saving design, a large filtration capacity, a smart LED reminder, and upgraded filtration capabilities.
The G3P800 reverse osmosis system a total of 800 gallons per day, making it one of the fastest water filtration systems on the market. Furthermore, it maintains a 3:1 pure-to-drain ratio.
Media Attention
Media Attention
Media Attention
Media Attention
Media Attention
Media Attention
Media Attention
Media Attention
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Model
G3P800
Pure to Drain
3:1
Product Dimensions (CM)
45.01*46.02*14.40
Product Weight (KG)
11.3 kg
Filtration
10-stage Filtration
Flow Rate (Gallon Per Day)
800GPD
Temperature
Room Temperature
Certification
NS/ANSI 42 & 53 & 58 & 372
Faucet
Smart Faucet
Usage
Indoor use only
Electricity Required
Yes
In The Box(17)
x1
System
x3
Replacement filters
x1
RO faucet
x1
Power adapter
x1
UV Sterilizer
x1
white 3/8” PE tubing
x1
Feed water adapter 3/8”-1/2”
x5
lock clip
x1
Teflon tape
x1
Drain saddle 1/4”
x1
Red 1/4” PE Tubing
Compare
Undersink RO
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Undersink RO
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G3P800

 

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G3P600

G3P600

 

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K6

K6

 

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Need Installation
Need Installation
Flow Rate
Flow Rate 800 GPD 600 GPD 600 GPD
Pure to Drain Rate
Pure to Drain Rate 3:1 2:1 2:1
Faucet
Faucet Smart faucet Smart faucet Smart faucet
Display
Faucet Filter lifespan & TDS Filter lifespan & TDS Filter lifespan & TDS & Temperature adjustment
Self-clean
Self-clean
Holiday mode
Holiday mode
Electricity Required
Electricity Required
Filter Cartridges
Filter Cartridges WD-G3-N1CF
WD-G3P800-RO
WD-G3-N3CB
WD-G3-N1CF
WD-G3P600-RO
WD-G3-N3CB
WD-KJF
Filter Lifespan
Filter Lifespan CF-6 Mths
CB-12 Mths
RO-24 Mths
CF-6 Mths
CB-12 Mths
RO-24 Mths
12 Mths
Dimensions (cm)
Dimensions (cm) 45.87 * 14.35 * 45.09 46.00 * 14.40 * 45.03 17.02 * 44.45 * 42.16
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.
Review
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.
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.