Waterdrop G3P600 Tankless RO
600 GPD tankless RO with a smart faucet and UV
Prices checked Sep 2026. Marketplace prices change often — verify the latest price before buying.
Our Review
The Waterdrop G3P600 is a tankless under-sink RO system rated at 600 GPD with a 2:1 ratio. Its 8-stage filtration includes a 0.0001 μm RO membrane and UV, while the smart faucet displays TDS and filter life.
Waterdrop lists RO filter life of up to 24 months and an approximately 30-minute DIY installation. Its IAPMO R&T certifications to NSF/ANSI 42, 53, 58 and 372 apply to claims on its performance data sheet.
Pros
- Tankless 600 GPD output with a 2:1 ratio
- Smart faucet displays TDS and filter life
- 8-stage filtration includes a 0.0001 μm RO membrane and UV
- About 30-minute DIY installation
Cons
- Requires under-sink installation
- RO filter replacement is needed; listed life is up to 24 months
The HU Recommendation
Check the performance data sheet for the exact claims covered by the certifications and confirm the under-sink DIY installation suits your setup.
Prices checked Sep 2026. Marketplace prices change often — verify the latest price before buying.
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