The Waterdrop G3P600 is a premier smart tankless reverse osmosis water filtration system designed to eliminate under-sink tank clutter while providing instant, high-flow purified drinking water. Certified to NSF/ANSI Standards 58 and 372, its 8-stage core filtration removes up to 99% of harmful contaminants including PFAS, lead, arsenic, chlorine, fluoride, heavy metals, microplastics, and total dissolved solids (TDS). Features a fast 600 GPD flow rate (fills an 8oz glass in 8 seconds), smart digital LED display faucet with real-time TDS and filter life monitoring, compact space-saving tankless chassis, and a high-efficiency 2:1 pure-to-drain low waste ratio.
Compact Tankless Space Saver: Sleek 5.7-inch slimline chassis saves up to 70% under-sink storage space and prevents secondary tank contamination. Smart Digital TDS Faucet: High-end smart faucet displays real-time filtered water TDS levels and filter replacement countdown alerts at a glance.
Fast 600 GPD High-Speed Flow: High-pressure internal booster pump dispenses fresh, pure water instantly at 0.42 GPM (fills a glass in 8 seconds). 8-Stage Deep Core Purification: Combines composite sediment, activated carbon block, 0.0001-micron RO membrane, and post-filtration protection.
2:1 High Efficiency Low Drain Ratio: Advanced water-saving design saves up to 600% more water compared to traditional 1:3 or 1:4 legacy RO systems.
Figures for this model. If you need a detail that isn’t listed, ask us and we’ll check before you order.
Ask about this model| Daily Output | 600 Gallons Per Day (GPD) |
|---|---|
| Flow Rate | 0.42 GPM (fills 8 oz glass in 8 seconds) |
| Pure to Drain Ratio | 2:1 (Water-saving high efficiency) |
| Filtration Technology | 8-Stage core composite + 0.0001μm Reverse Osmosis membrane |
| Contaminant Reduction | Reduces up to 99% of TDS, PFAS, lead, chlorine, fluoride, chromium & arsenic |
| Smart Faucet | Solid metal brushed nickel smart faucet with real-time digital TDS screen & filter indicator |
| Power Requirements | 100–240V AC / 50–60Hz (under-sink standard outlet) |
| Feed Water Pressure | 14.5 – 87 PSI |
| Operating Temperature | 41°F – 100°F (5°C – 38°C) |
| Chassis Dimensions | 18.06" L × 5.67" W × 17.72" H |
| Filter Replacement | Snap-in 3-second twist-and-pull filter change mechanism without shutting off main water |
| Certifications | NSF/ANSI 58 Certified, NSF/ANSI 372 Lead-Free Certified, FCC, IAPMO Gold Seal |
| Warranty | 1-Year Manufacturer Warranty + Lifetime Technical Support |
These come with the machine.
Reviews from Waterdrop G3P600 Tankless RO owners.
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Contact usYes. Because it uses an internal booster pump to provide fast tankless 600 GPD flow, it plugs into a standard 110V/120V household outlet under your sink.
The faucet features a circular digital screen at its base that continuously measures and displays the TDS (Total Dissolved Solids) in real time while water is flowing, plus a ring indicator that changes color when a filter change is due.
Filter changes take literally 3 seconds. The front magnetic panel pulls off, and the filters twist out and click back in like a lightbulb. You do not even have to turn off the water supply.
Yes. You can tee off the filtered water line to feed your refrigerator dispenser and ice maker using 1/4" PE tubing.
The G3P600 has an industry-leading 2:1 pure-to-drain ratio, producing 2 cups of pure water for every 1 cup of drain water, saving up to 600% more water than older 1:3 systems.
Groundmark offers free residential shipping from our Dallas hub, 30-day money-back guarantee, and 1-year comprehensive manufacturer warranty.
Delivery is free to residential addresses. Orders ship from our Dallas, TX warehouse, and larger items arrive by freight with a liftgate drop at your curb or driveway. You get a tracking number by email as soon as the carrier picks up your order.
