Experience truly pure drinking water straight from your tap. The Waterdrop G3P600 is a tankless, under-sink reverse osmosis system engineered for serious households that demand fast flow, certified filtration, and a compact footprint — without the bulk of a traditional storage tank.
Why the G3P600?
Unlike conventional RO systems that rely on pressurized storage tanks, the G3P600's tankless design saves up to 70% of under-sink space and eliminates the risk of bacterial contamination from standing water. With NSF/ANSI 42, 58 & 372 certification and an 8-stage filtration process, it delivers water you can trust — fast.
At 600 GPD flow rate, it fills a 6oz cup in just 6.5 seconds. The 2:1 pure-to-drain ratio means you save 800% more water compared to traditional RO systems — better for your wallet and the planet.
Key Benefits
- NSF/ANSI 42, 58 & 372 Certified — Independently tested and certified by IAPMO R&T for contaminant reduction and lead-free materials.
- 8-Stage Filtration — 0.0001μm RO membrane removes TDS, PFOA, PFOS, chlorine, fluoride, arsenic, lead, heavy metals, and more.
- 600 GPD Fast Flow — Fills a 6oz cup in 6.5 seconds; no waiting, no tank.
- 2:1 Pure-to-Drain Ratio — Produces only 1 cup of wastewater for every 2 cups of pure water.
- Tankless & Compact — Saves 70% of under-sink space vs. traditional tank-based systems.
- Smart Display Faucet — Monitors TDS levels in real-time and alerts you when filters need replacing.
- Long-Lasting Filters — CF filter: 6 months | CB filter: 12 months | RO membrane: 24 months.
- 30-Minute DIY Installation — No plumber required. Twist-and-pull filter replacement in 3 seconds.
- BPA-Free — All materials are BPA-free for safe, clean water delivery.
What It Removes
- TDS, chlorine, chloramine, scale, turbidity, bad taste & odor
- Heavy metals: Lead, mercury, barium, copper, radium 226/228, aluminum
- Carcinogens: Chromium (hexavalent & trivalent), cadmium, ferric oxide
- Inorganic pollutants: Arsenic, fluoride
- Organic pollutants: PFOA, PFOS, benzene, formaldehyde, trichloromethane, chlordane, asbestos
- Microorganisms: Cysts, coliform, parasites (filtration accuracy: 0.0001μm)
Use Cases
- Families of 1–6 looking for a reliable daily drinking water solution
- Households on municipal water with chlorine, fluoride, or heavy metal concerns
- Renters or homeowners with limited under-sink cabinet space
- Anyone replacing bottled water to reduce plastic waste and cost
- Homes with well water (requires pre-filtration system upstream)
- Connecting to a refrigerator ice maker via optional accessory kit
Directions for Use
- Install under sink — requires cold water supply line, drain pipe nearby, and one electrical outlet
- Drill a 1" hole in countertop for the smart display faucet (or use existing soap dispenser hole)
- Connect inlet tubing (3/8") and outlet tubing (1/4") per included instructions
- Power on and allow system to flush before first use
- Replace CF filter every 6 months, CB filter every 12 months, RO membrane every 24 months
- Monitor filter life via the smart faucet display — no guesswork required
Specifications
- Flow Rate: 600 GPD
- Pure-to-Drain Ratio: 2:1
- Filtration Stages: 8
- Filtration Accuracy: 0.0001μm RO membrane
- Dimensions: 18.11" × 5.67" × 17.73"
- Weight: 32.4 lbs
- Inlet Tubing: 3/8" | Outlet Tubing: 1/4"
- Operating Pressure: 14.5–87 psi
- Noise Level: ≤65 dB
- Certification: NSF/ANSI 42, 58 & 372 (IAPMO R&T)
- Warranty: 1 Year
- SKU: WD-G3P600
Frequently Asked Questions
What is the pure-to-drain ratio?
2:1 — for every 2 cups of pure water produced, only 1 cup of wastewater is discharged. Far more efficient than traditional RO systems.
Does it need electricity?
Yes. The system has a pump that requires one standard electrical outlet under the sink to maintain fast flow rate.
Is it suitable for well water?
It can be used with well water, but the feed water must first pass through a pre-filtration system before entering the G3P600.
Do I need to turn off the water to replace filters?
No. The water supply and power do not need to be shut off during filter replacement. Simply twist and pull, then reset and flush.
Can I connect it to my refrigerator?
Technically yes, using a 1/4" quick-connect T-adapter (sold separately at hardware stores). However, Waterdrop does not officially recommend this due to varying refrigerator water pressure requirements.
Is this system BPA-free?
Yes, all components are BPA-free.
What's the minimum water pressure required?
14.5–87 psi. The system operates normally within this range.
How loud is the system?
Sound does not exceed 65 dB under standard conditions. Ensure the unit is on a flat surface and not pressed against the cabinet to minimize vibration noise.
Can I use my own faucet?
You can use a third-party RO faucet (not a standard tap faucet) with a 1/4" quick-connect fitting. Note: the smart filter life indicator will not function without the included Waterdrop faucet.
What size hole do I need for the faucet?
Drill a 1" hole. A soap dispenser hole on your countertop can also be used if available.
