- [800 GPD High Capacity] Waterdrop G3P800 RO system filters 800 gallons of water per day with a fast flow, producing one cup of water in just 6 seconds.
- [3:1 pure to drain ratio] The tankless RO system G3P800 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 turns on when water flows by, and has a sterilization rate of up to 99.9%.
- [9-stage filtration] Tested by official third-party laboratory (SGS), through 9-stage filtration, G3P800 can effectively reduce PFAS, fluoride, heavy metals like lead, chromium, arsenic, iron, radium and calcium, salts like nitrate and chloride as well as large particles.
- [Trusted Certification] Certified against NSF/ANSI Standard 58 for TDS reduction and NSF 372 certified for lead-free material. See WD-G3P800 RO system test results for more.
- [Smart Faucet] Get real-time TDS levels and water quality with the system's smart faucet.
- [Stylish Design] Sleek and tankless, the G3P800 RO system saves up to 70% of under-sink space while consistently producing pure water.
800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800








- Experience purity with our RO Water Purifier, featuring a UV sterilization lamp that reduce 99.99% of bacteria, ensuring clean, safe, and refreshing drinking water at your command. It's an easy, reliable way to protect your family's health.
- Our commitment to reducing plastic waste for a cleaner planet, fighting plastic pollution. Embrace a greener lifestyle with our eco-conscious filtration system.

- G3P800 undersink reverse osmosis water filter 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.
- Experience the ease of filter replacement with this reverse osmosis 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.
- Long-lasting 24-month reverse osmosis replacement filter lessens replacement hassles and helps the planet, making a sustained clean water supply.



![]() X16 RO System |
![]() X12 RO System |
![]() G3P800 RO Filtration System |
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![]() K6 Instant Hot RO System |
![]() K19 Countertop RO System |
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Need Installation | √ | √ | √ | √ | √ | × |
---|---|---|---|---|---|---|
Flow Rate | 1600 GPD | 1200 GPD | 800 GPD | 600 GPD | 600 GPD | 75 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 | Smart faucet | Smart faucet | Smart faucet | Smart faucet | Smart faucet | / |
Display | Filter lifespan & TDS | Filter lifespan & TDS | Filter lifespan & TDS | Filter lifespan & TDS | Filter lifespan & TDS & Temperature adjustment | Filter lifespan & TDS |
Self-clean | √ | √ | √ | √ | √ | √ |
Holiday mode | √ | √ | √ | √ | √ | √ |
Electricity Required | √ | √ | √ | √ | √ | √ |
Filter Cartridges |
WD-F1A WD-F2 WD-X16-F3 |
WD-F1A WD-F2 WD-X12-F3 |
WD-G3-N1CF WD-G3P800-N2RO WD-G3-N3CB |
WD-G3-N1CF WD-G3P600-RO WD-G3-N3CB |
WD-KJF |
WD-K19RF |
Filter Lifespan | F1A-12 Mths F2-6Mths F3-24 Mths |
F1A-12 Mths F2-6Mths F3-24 Mths |
CF-6 Mths CB-12 Mths RO-24 Mths |
CF-6 Mths CB-12 Mths RO-24 Mths |
12 Mths | 12 Mths |
Dimensions (inch) | 18.2*6.25*16.72 | 18.2*6.25*16.72 | 18.06*5.65*17.75 | 18.11*5.67*17.73 | 6.7*17.5*16.6 | 13.8*7.9*16.3 |

X 1 Set

(CB:WD-G3-N3CB)
X 1

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

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

X 1 set

X 1 set

3/8”-1/2”
X 1 set

X 60”

X 5

X 1

X 1 set

X 60”

X 60”

X 1 Set
What kind of harmful substances does the Waterdrop G3P800 water filter remove?
Is UV sterilize necessary for reverse osmosis system?
Do I need to replace the UV lamp regularly?
Dose Waterdrop G3P800 RO system waste a lot of water?
Can Waterdrop G3P800 RO system be used for commercial?
Is the Waterdrop G3P800 reverse osmosis pump noisy?
Do I need plumbing services to install the reverse osmosis system?
Is this reverse osmosis water filter system unit suitable for well water?
Can I use our own faucet?

- 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.

- 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.

- 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.

- 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.