The RO system comes with an efficient 3-filter setup, alongside seven
layers of RO membrane. Therefore, it is effective against all impurities larger than 0.001 microns, such
as heavy metals, harmful chemicals, viruses, bacteria, and more.
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Waterdrop
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800
Regular price
$999.00
Regular price
Sale price
$999.00
Unit price
/
per
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Upgrade Your Kitchen

Get the Highlight

Enjoy Tankless Ease
- Enjoy clean water with this under sink reverse osmosis system. Clear instructions mean no professional needed—do it yourself and save extra cost. Its compact design frees up to 70% undersink space, making your kitchen looks bigger. Perfect for your home!

800GPD High Capacity
- Waterdrop tankless reverse osmosis system offers a higher water capacity (800 gallons per day), thereby meeting demands of a big family for pure water without waiting.
Trust in Every Drop
Improve Water Quality



Make Every Drop Safer with UV
- Experience purity with our reverse osmosis filter, featuring a UV sterilization lamp that reduce 99.9% of bacteria, ensuring clean, safe, and refreshing drinking water at your command. It's an easy, reliable way to protect your family's health.
Simplify Your Life
Smart Digital Faucet
- Waterdrop G3P800 reverse osmosis is equipped with a smart faucet, by which you can get the TDS level and water quality at a glance. The lifespan of uv sterilizing lamp is up to 50 years.

3s Easy to Replacement
- Experience the ease of filter replacement with this ro water system. Innovatively designed for swift changes with automatic water shut-off technology, it ensures convenience and no need for tools—a hassle-free upgrade in your water filtration journey.
Efficient to Save More
3:1 Pure Water Ratio
- By an advanced water dispensing technology, this under sink ro system produces just a cup of wastewater for every three cups of filtered water produced. It's more eco-friendly to save 1200% water source.


Eco-friendly Choice
- Our commitment to reducing plastic waste for a cleaner world, fighting plastic pollution. Embrace a greener lifestyle with our eco-friendly tankless reverse osmosis system.


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.
Reverse-osmosis systems have membranes that remove all your standard
contaminants, plus extras like
viruses, bacteria and parasites. Waterdrop G3,
for
example, carries an NSF 58
certification, which is
one of the highest filtrations possible.
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.
Waterdrop RO System is one of the most popular options for homeowners who are
interested in saving space and conserving water.
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.
Best Tankless
System.
Save space under your sink with this tankless reverse osmosis
system.
Waterdrop is known for its large variety of water filters, with its under-sink
filters
range topping
the list among them.









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

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Price | ||||||
Flow Rate And a cup of water has a volume of 6oz |
800 GPD Fill a cup in 5s |
1200 GPD Fill a cup in 3s |
1600 GPD Fill a cup in 2s |
800 GPD Fill a cup in 5s |
600 GPD Fill a cup in 7s |
600 GPD Fill a cup in 7s |
Pure to Drain Rate
![]() Drain ratio stands for the ratio of wastewater and
purified water dispensed by a RO system. For example, the 3:1 drain ratio means it uses
up a gallon of wastewater for every 3 gallons of pure water you get.
|
3:1 | 3:1 | 3:1 | 2:1 | 2:1 | 2:1 |
Alkaline Mineralization | × Alkaline mineralization requires the additional MNR35 filter (sold separately) |
√ | √ | × | × Alkaline mineralization requires the additional MNR35 filter (sold separately) |
× Alkaline mineralization requires the additional MNR35 filter (sold separately) |
Filtration Stages | 10 Stages | 11 Stages | 11 Stages | 9 Stages | 8 Stages | 5 Stages |
UV sterilizer | √ | √ | √ | × | × | × |
Dispensing Option | Ambient Water | Ambient Water | Ambient Water | Ambient Water | Ambient Water | Instant Hot Water Ambient Wate |
Filter Lifespan |
CF 6
Mths CB 12 Mths G3P800-RO 24 Mths |
F1A
12 Mths F2 6Mths X12-F3 24 Mths |
F1A
12 Mths F2 6Mths X16-F3 24 Mths |
F1G
12 Mths F2 6Mths X8-F3 24 Mths |
CF
6 Mths CB 12 Mths G3P600-RO 24 Mths |
KJF
12 Mths |
Replacement Cost | $0.14 per gallon | $0.15 per gallon | $0.16 per gallon | $0.14 per gallon | $0.13 per gallon | $0.07 per gallon |
Faucet | Smart Display Faucet TDS & filter life monitor |
Digital Control Faucet TDS & filter life monitor Adjustable water volumes |
Digital Control Faucet TDS & filter life monitor Adjustable water volumes |
Smart Display Faucet TDS & filter life monitor |
Smart Display Faucet TDS & filter life monitor |
Smart Display Faucet TDS & filter life monitor Temperature adjustment |
Dimensions (inch) | 18.12*5.67*17.72 | 18.2*6.25*16.72 | 18.2*6.25*16.72 | 18.2*6.25*16.72 | 18.11*5.67*17.73 | 6.7*17.5*16.6 |
Item weight | 36lb | 36.92lb | 36.92lb | 36.3lb | 32.4lb | 31.9lb |
Model
WD-G3P800-W
Size (L*W*H)
18.06”*5.65”*17.75”
Feed water temperature
41-100℉/ 5-38℃
Feed water pressure
14.5-87 psi/ 0.1-0.6 MPa
Feed water requirement
Municipal tap water
Max daily production rate
800 GPD
Faucet appearance
Brushed nickel
In the box

System housing
X 1 Set
X 1 Set

Activated carbon filter
(CB:WD-G3-N3CB)
X 1
(CB:WD-G3-N3CB)
X 1

Pre-sediment and
carbon block filter
(CF:WD-G3-N1CF)
X 1
carbon block filter
(CF:WD-G3-N1CF)
X 1

Reverse osmosis
Membrane filter
(RO:WD-G3P800-N2RO)
X 1
Membrane filter
(RO:WD-G3P800-N2RO)
X 1

RO faucet
X 1 set
X 1 set

UV Sterilizer
X 1 set
X 1 set

Feed water adapter
3/8”-1/2”
X 1 set
3/8”-1/2”
X 1 set

white 3/8” PE tubing
X 60”
X 60”

lock clip
X 5
X 5

teflon tape
X 1
X 1

drain saddle 1/4”
X 1 set
X 1 set

white 1/4” PE Tubing
X 60”
X 60”

Red 1/4” PE Tubing
X 60”
X 60”

Power Adapter
X 1 Set
X 1 Set
What kind of harmful substances does the Waterdrop G3P800 water filter remove?
Is UV sterilize necessary for reverse osmosis system?
Yes, it is. Reverse osmosis system is designed to remove over 90% of
contaminants from your tap water by forcing the water particles through tiny pores in the reverse
osmosis membrane. However, bacteria that isn’t intercepted by RO membrane will still grow in internal
waterway and even faucet. UV sterilizer can perfectly solve this problem because it can filter out up to
99.9% bacteria in water. So, it is best to combine UV disinfection with water filtration for the purest
drinking water.
Do I need to replace the UV lamp regularly?
No, it is not. You can use the lamp for up to 50 years or more. It uses an
advanced LED chip with little or no maintenance requirements – a huge upgrade from the traditional
mercury sterilizer.
Dose Waterdrop G3P800 RO system waste a lot of water?
No, it does not. The reverse osmosis water system is equipped with
cutting-edge water-saving technology that guarantees a minimum drain ratio of 3:1. Therefore, for every
three cups of pure water you get, only 1 cup of wastewater is produced. This is the highest water-saving
capability you will find in reverse osmosis water filters.
Can Waterdrop G3P800 RO system be used for commercial?
Yes, you can. The 800 GDP filtration capacity of the filter in this
reverse osmosis with uv light means it can conveniently meet the water needs for large households and
small businesses like clinics, restaurants, gyms, cafes, and others.
Is the Waterdrop G3P800 reverse osmosis pump noisy?
Yes, it does. The pump in this reverse osmosis water filter works
silently; you will hardly hear any noise.
Do I need plumbing services to install the reverse osmosis system?
No, you don’t. The installation process is quite straightforward.
Is this reverse osmosis water filter system unit suitable for well water?
No, you cannot. The complicated position of well water makes it unsuitable
for this system. We recommend having a basic water filter to remove the large particles in your well
water before sending it to this RO system.
Can I use our own faucet?
No, you cannot. Your original kitchen faucet may not be compatible with
the system. Therefore, we have included a dedicated faucet in this reverse osmosis water system.

CF Filter for Waterdrop G3P800 & G3 Reverse Osmosis System
- Pre-sediment and carbon block. Superior 3-in-1 composite filter.
- Provides up to 6 months or 550 gallons of clean water.
- Simple replacement: Takes only 3 seconds and just a twist to change the filter.
29.99
Total price: $29.99
Total price: $29.99

WD-G3-N3CB Filter for waterdrop G3P800 & G3 Reverse
Osmosis System
- Superior coconut shell activated carbon block with a smaller pore size.
- Provides up to 12 months or 1,100 gallons of clean water.
- 3-second replacement: Takes only a twist to change the filter.
29.99
Total price: $29.99
Total price: $29.99

WD-G3P800-N2RO Filter for Waterdrop G3P800 Reverse Osmosis
Systems | 800GPD
- Breakthrough water-saving technology achieves 3:1 low drain ratio.
- Replace filter in 3 seconds only, saving time and effort.
- The recommended replacement cycle is no more than 24 months.
139.99
Total price: $139.99
Total price: $139.99

Remineralization Filter for All Series Waterdrop Reverse
Osmosis Systems-Waterdrop MNR35
- An excellent add-on Remineralization filter adopts 18 natural materials to restore minerals.
- Saves 8300 single-used bottles and $12600 spent on bottled mineral water.
- Compatible with RO water system, undersink filtration systems and refrigerator.
29.99
Total price: $29.99
Total price: $29.99

CF & CB Filters for G3P800 RO System, 1-YEAR COMBO
- Waterdrop WD-G3P800-W Replacement Filters 1-Year Combo.
- Pack of 2 WD-G3-N1CF Filters and 1 WD-G3-N3CB Filter.
- It could help you save money by purchasing two CF filters and one CB filter in one kit together rather than individually.
89.97
Total price: $89.97
Total price: $89.97

CF & CB Filters and Remineralization Filter for G3P800 RO
System, 1-YEAR COMBO
- The water filter kit provides up to 1-year of clean water for your family.
- Pack of 2 CF Filters, 1 CB Filter, and 1 Remineralization Filter.
- It could help you save money by purchasing 1-Year Combo Replacement Filters in one kit together rather than individually.
119.96
Total price: $119.96
Total price: $119.96
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