

Composite filter technology
- The new composite filter technology employs an excellent filter combination to achieve more efficient filtration.
- The composite water filters can effectively reduce most contaminants.


Composite integrated filters
- CF filter reduces rust, sediment, large particles, chlorine, taste and odor.
- MRO filter effectively reduces most contaminants, such as chloramine, antibiotics, organic matter, heavy metals, nitrite, bacteria, and limescale. This reverse osmosis water filter improves the taste of water and provides purified water that is as fresh as spring water.
Reverse osmosis membrane
- The reverse osmosis membrane has a pore size of 0.0001 μm, which is one-millionth of a strand of hair. Bacteria and viruses are 5,000 times larger than its pore size.
- Therefore, only water molecules and some beneficial mineral ions can pass through the RO membrane. Heavy metals and other impurities are discharged from the waste water tubing.
- The G2 RO membrane can reduce most harmful substances in water.


Innovative tankless design
- The tankless reverse osmosis system ensures the safety of your family’s drinking water.
- This compact RO system also saves over 70% more under-sink storage space as compared to traditional reverse osmosis water filter systems.
- The tankless design avoids recontamination, such as bacterial growth.
Kind notice:
- Please refer to this diagram and be informed that you need to drill a hole on your countertop to place the smart faucet (No need for this step if your countertop already has a hole).
- Besides, an adapter will be installed on your household water tubing to connect to RO system’s wastewater tubing and input water tubing.
- Electricity is required to run the RO system.
- We do not recommend using well water as source for our RO systems. We do not recommend connecting tankless RO to a refrigerator or ice maker.
- It's highly recommended to install our RO system with components provided by Waterdrop. Installing the system with any parts or accessories that are not provided by Waterdrop may cause the system to malfunction or shorten the lifetime of the system/filters.


Fills a cup of water in 12 seconds
- This G2 Reverse Osmosis Water Filtration System offers a fast water flow rate of up to 400 GPD. Get a cup of filtered water in 12 seconds, satisfying your needs while saving time.
- Compared t o the traditional RO water filter system, which only has continuous water flow during the first two minutes, Waterdrop reverse osmosis system always has a stable water flow.
RO System Models


Smart filter life reminder
- 3 colors of lights show the status of water filters.
- Blue means your water filters are functioning well.
- Purple means you need to replace the water filter soon. You still have 15 days to replace it.
- Red means you have to replace the water filter immediately.
Easy to install
- Installing the Waterdrop G2 under sink water filtration system takes less than 30 minutes.
- Due to the twist-and-pull design, you can replace the water filter in 3 seconds.


1:1 low drain ratio
- All reverse osmosis water purification systems will produce concentrated water to discharge impurities.
- Compared to traditional RO water purifiers, the G2 RO system produces less concentrated water and saves 300% more water.
- You can collect concentrated water to mop the floor, wash your car, do laundry, etc.
- Newborns are very delicate. Compared to tap water, RO water is purer, cleaner and more suitable for babies. Milk powder made by RO water is easier to be absorbed.

![]() G2 RO Filtration System |
![]() D4 RO Filtration System |
![]() G3 RO Filtration System |
![]() G3P800 RO Filtration System |
![]() D6 RO Filtration System |
![]() G2P600 RO Filtration System |
|
Need Installation | √ | √ | √ | √ | √ | √ |
---|---|---|---|---|---|---|
Beneficial Minerals | × | × | × | × | × | × |
Flow Rate | 400 GPD | 400 GPD | 400 GPD | 800 GPD | 600 GPD | 600 GPD |
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.
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Faucet | Ordinary faucet | Ordinary faucet | Smart faucet | Smart faucet | Smart faucet | Ordinary faucet |
Display | Filter lifespan | Filter lifespan | Filter lifespan & TDS | Filter lifespan & TDS | Filter lifespan & TDS | Filter lifespan |
Self-clean | × | √ | √ | √ | √ | × |
Holiday mode | × | × | √ | √ | √ | × |
Electricity Required | √ | √ | √ | √ | √ | √ |
Filter Cartridges |
WD-G2CF WD-G2MRO |
WD-D4RF |
WD-G3-N1CF WD-G3-N2RO WD-G3-N3CB |
WD-G3-N1CF WD-G3P800-N2RO WD-G3-N3CB |
WD-D6RF |
WD-G2CF WD-G2P6MRO |
Noise(≤) | 55dB | 55dB | 65dB | 65dB | 55dB | 55dB |
Filter Lifespan | CF-12 Mths MRO-24 Mths |
12 Mths | CF-6 Mths CB-12 Mths RO-24 Mths |
CF-6 Mths CB-12 Mths RO-24 Mths |
12 Mths | CF-12 Mths P6MRO-24 Mths |
Dimensions(inch) | 17.32*5.91*13.9 | 16.02*6.22*12.44 | 18.11*5.67*17.72 | 18.11*5.67*17.72 | 15.98*5.98*11.97 | 17.32*5.91*13.9 |
![]() WD-G2CF |
![]() WD-G2MRO |
|
Filtration Media | Sediment PP membrane and activated carbon block | Reverse osmosis membrane and activated carbon block |
---|---|---|
Filter Lifespan | 12 months or 1,100 gallons | 24 months or 2,200 gallons |
Size (Diameter * Height) | 4.9" * 8.1" | 4.9" * 15" |
Compatible Model | WD-G2-B/WD-G2-W/WD-G2P600-W/WD-G2MNR-W | WD-G2-B/WD-G2-W/WD-G2MNR-W |