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

User Manual

Key Features

· 8-Stage Filtration – Reduces TDS, PFAS, fluoride, and contaminants effectively.

· High Capacity – Delivers 600 GPD, fills 8 oz cup in 8 seconds.
· Water Efficient – 2:1 pure to drain ratio saves water and reduces bills.
- NSF· NSF Certified – Meets NSF/ANSI 42, 58, 372 standards for safety.
· Tankless Design – Saves 70% under-sink space, prevents secondary contamination.
· Smart Faucet – Real-time TDS monitoring and filter life indicator.
· Easy Installation – 3-second filter replacement without tools or system movement.

· 10-Stage Filtration - Removes PFAS, fluoride, lead, chromium and heavy metals.
· Ultra Capacity - Produces 800 GPD, fills a 6oz cup in 5s.
· Superior Efficiency – 3:1 pure to drain ratio minimizes water waste.
· Multi-Certified – NSF/ANSI 42, 53, 58, 372 certified.
· UV Sterilization – Eliminates 99.9% bacteria and viruses.
· Smart Display – LED faucet shows TDS levels and system status.
· Professional Grade – Tankless design perfect for large families and small businesses.

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Replacement Filter

Replace filter for continued contaminants removal and system performance.

CF Filter

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

$29.99

Add To Cart

CB Filter

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

$29.99

Add To Cart

RO Filter

Provides up to 24 months or 2,200 gallons of clean water.

$139.99

Add To Cart

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$150 Off

Best Seller

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

Name: 800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
Brand: Remove 99% of lead - cleaner, safer, better
SKU: WD-G3P800-W-FC
Price: 999.0 USD
Availability: InStock

Remove 99% of lead - cleaner, safer, better

$849.00

$999.00

$150 Off

$999.00

Apply code in checkout to get $150 off

WDG3P800

Extended WarrantyNo Extended Warranty

No Extended Warranty

2-Years Extended Warranty

3-Years Extended Warranty

Extended Warranty Service Terms

Quantity

More payment options

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HSA/FSA eligible for qualified customers

Design for

G3P800 Is Designed For Pure Drinking. Enjoy fresh, clean, great-tasting water instantly. The 800GPD RO system effectively reduces impurities for pure hydration every day.

Key Features

[800GPD High Capacity]: The Waterdrop G3P800 RO system filters 800 gallons of water per day with a fast flow, producing one 6oz cup of water in just 5 seconds.
[3:1 Pure to Drain Ratio]: This tankless RO system uses only one cup of wastewater to produce three cups of filtered water, thanks to advanced water dispensing technology.
[UV Sterilizing Light]: Equipped with a long-lasting LED lamp that automatically activates during water flow, achieving up to 99.9% sterilization.
[NSF/ANSI 42, 53, 58 & 372 Certified]: Certified by IAPMO R&T against NSF/ANSI 58 for TDS reduction, NSF 42 & 53 for chlorine, taste and odor reduction, and NSF/ANSI 372 for lead-free materials. See WD-G3P800 test results for details.
[Smart & Space-Saving Design]: Waterdrop G3P800 features a smart faucet that displays real-time TDS levels and water quality, while its sleek, tankless design saves 70% under-sink space.

Warranty

[1-Year Warranty, Guaranteed Reliability]: We’ve got you covered with a full year of protection, so you can enjoy clean water worry-free.

Replacement Filter

Replace filter for continued contaminants removal and system performance.

CF Filter

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

$29.99

Add To Cart

CB Filter

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

$29.99

Add To Cart

RO Filter

Provides up to 24 months or 2,200 gallons of clean water.

$139.99

Add To Cart

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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 - $849.00

Overview

Specs

Compares

Reviews

FAQs

Replacements

10-Stage Filtration

0.0001μm RO membrane

3:1

Pure to drain ratio

Saves 1200% water

800GPD

High flow rate

Authorized Certification

UV Sterilization

G3P800

Designed

For

Pure Drinking

Suggested Family Size:

Water Tastes & Smells Unpleasant?

Reduces impurities for fresher taste and smell

800GPD High Flow Rate

Fills a 6oz cup in 5s.

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% undersink 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.

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.

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

Media Attention

Offers everything they expect from a reliable and efficient household filtration system. It has all they need to safeguard the cleanliness and health of the drinking water.

Customer Review

We love our new RO system. It's already saved us $$ since we are no longer buying bottled water, and I am so glad to reduce our use of single-use plastics as well. The water tastes great and the system works like a dream

VANESSA

Been through many different systems from Lowes (AO Smith) and Home Depot. Waterdrop filters are my favorite in design. It obviously works like it's supposed to. But the ease of changing filters is awesome. It's a breeze now. Love the design.

Kenny Roberts

Great system. Was buying bottled water before but even some bottled water tasted off. I don't have that issue with the waterdrop RO. Water tastes great.

Shellene TURNIPSEED

After many years of unsuccessfully trying water pitchers and refrigerator filters the Waterdrop 800 with UV sterilizer has finally cut off my dependence on bottled water.

Joseph

Excellent product and service! With Safety and Quality as their standard, Waterdrop knocks it out of the ballpark for pure, unadulterated water!! Many thanks!!

Gail Warren

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

Model

G3P800

Pure to Drain

3:1

Product Dimensions (In)

18.11*5.67*17.73

Product Weight (Ib)

32.4 pounds

Filtration

10-stage Filtration

Capacity

800GPD

Certification

NS/ANSI 42 & 53 & 58 & 372

Faucet

Smart Faucet

Usage

Indoor use only

Electricity Required

Yes

In The Box(17)

User Manual

System

Replacement filters

RO faucet

Power adapter

UV Sterilizer

white 3/8” PE tubing

Feed water adapter 3/8”-1/2”

lock clip

Teflon tape

Drain saddle 1/4”

Red 1/4” PE Tubing

Compare
Undersink RO

Compare Undersink RO	G3P800 $849.00 ~~$999.0~~ $150 Off Add to Cart	G3P600 $439.00 ~~$539.0~~ $100 Off Add to Cart	X8 $799.0 Add to Cart
Flow Rate
Flow Rate	800 GPD	600 GPD	800 GPD
Alkaline Mineralization
Alkaline Mineralization	×	×	×
Pure to Drain Rate
Pure to Drain Rate	3:1	2:1	2:1
Filtration Stages
Filtration Stages	10 Stages	8 Stages	9 Stages
Faucet
Faucet	Smart Display Faucet TDS & filter life monitor	Smart Display Faucet TDS & filter life monitor	Smart Display Faucet TDS & filter life monitor
Filter lifespan
Filter lifespan	CF 6 Mths CB 12 Mths G3P800-RO 24 Mths	CF 6 Mths CB 12 Mths G3P600-RO 24 Mths	F1G 12 Mths F2 6Mths X8-F3 24 Mths
Average annual cost
Average annual cost	$159.97	$144.97	$162.97
Warranty
Warranty	1 Years	1 Years	2 Years
Certification
Certification	NSF/ANSI 42 & 58 & 372	NSF/ANSI 42 & 58 & 372	NSF/ANSI 42 & 58 & 372
Dimensions (inch)
Dimensions (inch)	18.115.6717.72	18.115.6717.72	18.11 * 5.51* 17.72
Item Weight
Item Weight	36 pounds	32.4 pounds	36.45 pounds

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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.

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.