Waterdrop G3P600 Tankless Reverse Osmosis System
Fast 600 GPD reverse osmosis filtration with a smart TDS faucet, compact tankless design and efficient 2:1 pure to drain ratio.
High Capacity Reverse Osmosis for Everyday Drinking Water
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600 GPD Output:
Produces filtered water quickly enough for busy households without relying on a slow storage tank. -
Eight Stage Filtration:
Combines sediment, carbon and reverse osmosis filtration to support broad contaminant reduction. -
Smart Digital Faucet:
Displays the filtered water TDS reading and alerts you when a cartridge is approaching replacement. -
Tankless Design:
Fits neatly beneath the sink without the bulky storage tank used by traditional RO systems.
Purified Water Without a Bulky Storage Tank
The Waterdrop G3P600 is designed for customers who want high performance reverse osmosis filtration without sacrificing most of their under sink cupboard space.
Water is filtered as required rather than being stored in a conventional pressure tank. This gives you a cleaner, more compact installation and a steady supply of freshly filtered drinking water through the included smart faucet.
Buy with Confidence
The Waterdrop G3P600 is supplied with a 12 month manufacturer warranty, with ongoing support from Regal Flow for installation questions, replacement filters and product guidance.
Why Choose the Waterdrop G3P600?
Fast Filtered Water
The 600 GPD membrane provides a strong flow rate for filling glasses, bottles and cooking containers without a long wait.
More Cupboard Space
The narrow tankless housing leaves considerably more useful storage space beneath the kitchen sink.
Water Quality at a Glance
The smart faucet displays the filtered water TDS reading while the system monitors cartridge condition.
Less Water Sent to Drain
The 2:1 pure to drain ratio produces approximately two cups of filtered water for each cup discharged.
Eight Stage Filtration in Plain English
The G3P600 uses three replaceable cartridges that perform several filtration stages. The pre sediment and carbon filter tackles larger particles and chlorine before the water reaches the reverse osmosis membrane. The RO membrane provides the finest separation stage, while the final carbon cartridge helps improve the finished taste and odour before water reaches the faucet.
Smart Faucet with TDS and Filter Monitoring
The supplied digital faucet does more than dispense water. Its display gives you a live TDS reading when the system operates and uses colour indicators to show the condition of the filters.
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White Indicator:
The filter is operating normally. -
Yellow Indicator:
The cartridge is approaching replacement. -
Red Indicator:
The cartridge should now be replaced. -
Status Display:
The faucet also communicates flushing activity and system fault codes.
Is the Waterdrop G3P600 Right for Your Kitchen?
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Best For:
Households wanting fast under sink reverse osmosis water through a separate filtered water faucet. -
Good Choice If:
You want to preserve cupboard space and avoid a traditional RO storage tank. -
Check Before Buying:
The system needs a cold water connection, waste connection, power socket and room for the housing beneath the sink. -
Faucet Requirement:
A suitable countertop or sink hole is needed for the included smart faucet. -
Not Designed For:
Direct outdoor installation or connection to the hot water supply.
Why Buy from Regal Flow?
Compact Under Sink Installation
The slim housing measures approximately 460mm high, 144mm wide and 450mm deep. Its narrow design makes better use of the available cupboard space than a traditional reverse osmosis system with a separate pressure tank.
Leave the front of the unit accessible so the cartridges can be removed and the filter indicators can be checked without dismantling the surrounding cupboard.
600 GPD Output with a 2:1 Pure to Drain Ratio
The G3P600 can produce up to 600 gallons of filtered water per day under suitable operating conditions. Its 2:1 pure to drain ratio means approximately two parts of filtered water are produced for every one part sent to the drain, making it considerably more efficient than many older reverse osmosis systems.
Certified Performance and Material Safety
NSF/ANSI 58
Certified for reverse osmosis performance, including the reduction of total dissolved solids.
NSF/ANSI 372
Certified for compliance with lead free material requirements.
Smart Monitoring
The system and faucet monitor TDS, flushing status, filter condition and selected fault codes.
Automatic Flushing
The system automatically flushes during setup and selected operating cycles to support membrane performance.
Installation Overview
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Cold Water Connection:
The feed adapter connects to the household cold water supply only. -
Smart Faucet:
The included faucet is mounted through a suitable hole in the sink or worktop. -
Drain Connection:
A drain saddle connects the wastewater tubing to the vertical waste pipe. -
Electrical Supply:
A nearby power socket is required for the filtration system and faucet display. -
Initial Flush:
After installation, allow the automatic flush to complete and run the faucet for the period stated in the setup manual before drinking the water.
Professional installation is recommended if you are not comfortable drilling the faucet hole, fitting the feed adapter or connecting the drain saddle.
What Comes With the Waterdrop G3P600?
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G3P600 System Housing:
Compact tankless reverse osmosis unit. -
Three Filter Cartridges:
CB activated carbon filter, CF pre sediment and carbon block filter, and G3P600 reverse osmosis membrane. -
Smart Digital Faucet:
Supplied with filtered water tubing and electrical connection. -
Feed Water Adapter:
Preassembled adapter and inlet tubing for the cold water supply. -
Drain Components:
Drain saddle, wastewater tubing and connection hardware. -
Power Adapter:
Electrical supply for the system and smart faucet. -
Installation Accessories:
Locking clips, PTFE tape and required PE tubing.
Filter Replacement and Maintenance
The G3P600 monitors filter use and processed water capacity. The indicators on the front housing and smart faucet change colour when a cartridge is approaching replacement.
CF Filter
Pre sediment and carbon block cartridge that protects the later filtration stages from larger particles and chlorine.
RO Membrane
The main reverse osmosis cartridge responsible for the finest dissolved contaminant separation.
CB Filter
Activated carbon finishing cartridge that helps improve the taste and odour of the filtered water.
Quick Twist Replacement
Each cartridge turns approximately one quarter turn for removal and installation, reducing maintenance time.
Waterdrop G3P600 Technical Specifications
| Model | WD G3P600 |
| Product Type | Tankless under sink reverse osmosis system |
| Rated Capacity | 600 gallons per day |
| Flow Rate | Approximately 0.42 gallons per minute or 1.59 litres per minute |
| Pure to Drain Ratio | 2:1 |
| Filtration Stages | Eight stages across three replaceable cartridges |
| Included Faucet | Smart digital RO faucet with TDS and filter indicators |
| Certifications | NSF/ANSI 58 and NSF/ANSI 372 |
| Product Dimensions | Approximately 460mm high x 144mm wide x 450mm deep |
| Product Weight | Approximately 14.7kg |
| Housing Material | BPA free plastic |
| Filter Cartridges | CF pre sediment and carbon block, RO membrane and CB activated carbon |
| Installation Location | Indoor under sink installation |
| Water Connection | Cold water supply only |
| Drain Connection Required | Yes |
| Electrical Connection Required | Yes |
| Storage Tank | Not required |
| Power Cable Length | Approximately 90 inches |
| Warranty | 12 month manufacturer warranty |
Downloads and Resources
G3P600 Quick Setup Manual
Parts list, connection diagram, installation steps, startup guidance and smart faucet indicator information.
View PDF
Waterdrop Comparison Guide
Compare Waterdrop capacity, filtration, dimensions and smart features before choosing your system.
Compare SystemsFrequently Asked Questions
Does the Waterdrop G3P600 have a storage tank?
No. It is a tankless reverse osmosis system that produces filtered water as required.
Does the system include a faucet?
Yes. It includes a smart digital RO faucet that displays the filtered water TDS reading and filter condition.
What does 600 GPD mean?
GPD means gallons per day. The system is rated to produce up to 600 gallons of filtered water during a 24 hour period under suitable operating conditions.
What does the 2:1 ratio mean?
It means the system produces approximately two cups of filtered water for each cup of wastewater sent to the drain.
Does the G3P600 require electricity?
Yes. A nearby electrical socket is needed to power the system and smart faucet display.
Can it connect to the hot water supply?
No. The system must only be connected to the household cold water supply.
Will I need to drill a hole for the faucet?
A suitable faucet hole is required. If your sink or worktop does not already have one available, a new hole will need to be drilled.
Can I replace the filters myself?
The cartridges use a quick twist fitting and are designed for straightforward replacement. Always isolate the water and follow the manufacturer’s instructions.
Does reverse osmosis produce wastewater?
Yes. Reverse osmosis uses water to carry separated impurities to the drain. The G3P600 has an efficient 2:1 pure to drain ratio.
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View Under Sink SystemsNeed Help Choosing an Under Sink RO System?
If you are unsure about available cupboard space, water pressure, faucet installation, replacement filters or whether the G3P600 suits your household, contact Regal Flow before ordering.
