Waterdrop
Waterdrop G3P800 Under Sink RO System
Best high-capacity filtration for families seeking pure, space-saving water solutions.
Experience pure, great-tasting water with the Waterdrop G3P800 Under Sink RO System. This advanced tankless system uses a 10-stage filtration process and UV sterilization to remove contaminants like heavy metals, PFAS, and bacteria. Its compact design saves space, while the smart faucet provides real-time water quality updates. Enjoy easy, 3-second filter changes and an efficient 3:1 pure-to-wastewater ratio. With an 800 GPD capacity, it's perfect for ensuring healthy hydration for your whole family, offering peace of mind and exceptional taste.
$1088.00
Owner Satisfaction
4.6
/ 5
Category Rank
39
/ 845
#39 in Water Filters
Price vs Category Average
+102%
Above average
System Type
Tankless Under Sink RO
/ Tankless Under Sink RO
Who it's for
- Busy households needing instant access to purified water
- Eco-conscious homeowners looking to minimize water waste
- Tech-savvy users who appreciate clear maintenance alerts
Who should skip it
- Renters or homeowners lacking under-sink electrical access
- Budget-focused shoppers seeking an affordable entry-level filter
- Consumers wary of long-term proprietary replacement costs
Performance breakdown
Filtration Depth
Ten-stage process captures contaminants down to an impressive 0.0001 micron level.
Flow Rate
The 800 GPD capacity delivers instant, high-volume water access for busy households.
Space Efficiency
Tankless design reclaims valuable under-sink storage without sacrificing performance.
Maintenance Simplicity
Three-second filter swaps make routine upkeep effortless for any user.
Water Conservation
Efficient ratio minimizes waste compared to traditional reverse osmosis systems.
Smart Monitoring
Real-time faucet feedback provides immediate clarity on your water quality.
Key Specs
System Type
Tankless Under Sink RO
Daily Production
800 GPD
Waste Water Ratio
1:1
Operating Pressure
14.5-87 psi
Operating Temperature
41-100°F (5-38°C)
Power Supply
100-240V, 50/60Hz
Filtration Stages
10
Filter Life
CF: 6 Months, CB: 12 Months, RO: 24 Months
Features
- 10-stage advanced filtration for pure water
- UV sterilization eliminates 99.9% of bacteria
- Tankless design saves valuable under-sink space
- Smart faucet displays real-time water quality
- Quick 3-second filter replacement
- High 800 GPD capacity for families
- Water-saving 3:1 pure water ratio
- Quiet and efficient operation
What customers say
The Waterdrop G3P800 Under Sink RO System consistently receives overwhelmingly positive customer sentiment, establishing itself as a highly regarded solution for home water purification. Users frequently laud the exceptional quality and taste of the filtered water, often reporting a dramatic improvement over their tap water and even surpassing the quality of many bottled water brands. A standout feature is the system's impressive flow rate, which addresses a common complaint with traditional RO systems by providing quick and convenient access to purified water, making it ideal for both drinking and cooking. Installation is generally described as straightforward and manageable for most DIYers, thanks to clear instructions and a well-engineered design, though some less experienced users might find the plumbing aspects a bit more involved. Customers particularly appreciate the compact, tankless design, which efficiently utilizes under-sink space, a significant advantage over bulkier alternatives. The ease of filter replacement, often highlighted as a simple twist-and-lock mechanism, contributes significantly to a hassle-free maintenance experience. While the initial investment is higher than basic filtration systems, a strong consensus among reviewers is that the superior performance, advanced features like the real-time TDS monitor, and the long-term savings on bottled water justify the cost, offering excellent value for money. Minor criticisms are rare and typically revolve around isolated installation nuances or the inherent wastewater production of RO technology, but these are largely overshadowed by the system's robust performance, quiet operation, and the tangible benefits of readily available, clean, great-tasting water. Overall, the G3P800 is highly recommended for those seeking a premium, efficient, and reliable water filtration system.
Know before you buy
The system measures 17.7 inches long, 5.7 inches wide, and 17.7 inches high. Because it features a tankless design, it occupies significantly less space than traditional RO systems, leaving more room for your other under-sink storage.
The smart faucet features an integrated LED indicator that changes color based on the real-time Total Dissolved Solids (TDS) levels of your filtered water. This provides an immediate visual confirmation that your system is working correctly.
Not at all. The system is designed for tool-free maintenance, allowing you to twist and replace each filter cartridge in about three seconds.
The G3P800 is highly efficient, featuring a 3:1 pure-to-wastewater ratio. This means for every four gallons of water processed, three gallons are purified for drinking and one gallon is sent to the drain.
Yes, the system requires a standard 100-240V power outlet to operate the internal pump, UV sterilization, and smart monitoring features.
Filter life varies by stage: the CF filter lasts approximately 6 months or 1,100 gallons, the RO filter lasts 24 months or 2,200 gallons, and the post-activated carbon filter lasts 12 months or 1,100 gallons. The system includes a filter change indicator to alert you when it is time for a replacement.
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$1088