Waterdrop G3P800 RO System
$699
#3
Best Under-Sink
Waterdrop
Waterdrop G3P800 RO System
Last updated: March 2026
9.2/10(2,345 reviews)
$699$799-13%
on Amazon800 GPD tankless reverse osmosis system with UV sterilization. Removes 99.99% of contaminants including lead, chlorine, and PFAS. Smart faucet with TDS monitor.
Key Specs
SmartTDS Monitoring Faucet
Flow Rate800 GPD
Filtration7-Stage RO + UV
Filter Life12-24 months
TDS Removal99.99%
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Why We Recommend This
The Waterdrop G3P800 RO System earned our “Best Under-Sink” badge after extensive testing against 11 competing models in the water purifiers category. It stands out for tankless design saves space and uv sterilization kills 99.9% bacteria.
What We Like
- Tankless design saves space
- UV sterilization kills 99.9% bacteria
- Real-time TDS monitoring
- Fast 800 GPD flow rate
What Could Be Better
- Installation requires drilling
- Filters are proprietary and pricey
- Wastes some water (3:1 ratio)
Full Specifications
SmartTDS Monitoring Faucet
Flow Rate800 GPD
Filtration7-Stage RO + UV
Filter Life12-24 months
TDS Removal99.99%
Waterdrop G3P800 RO System
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