If you’re looking for a compact tankless reverse osmosis system in the UK, the Waterdrop G2P600 is one of the more interesting mid-range options. It promises strong RO filtration, a small footprint, simple front-access filter changes, and faster flow than older tank-based systems.
With PFAS now under UK government review in 2026, reverse osmosis systems like this are becoming increasingly popular for drinking water.
This Waterdrop G2P600 review UK looks at the design, filtration system, installation requirements, I’m sharing a hands-on inspection of the Waterdrop G2P600 using my own photos, real packaging shots, filter close-ups, under-sink fit test, and installation observations.
I also compare it where helpful to the Waterdrop G5P700A, which is the Waterdrop system I already run in my kitchen. If you want Waterdrop’s premium model with a smart TDS display faucet, see my Waterdrop G5P700A review here. If you’re unsure whether reverse osmosis is necessary, check your water hardness first.
Quick Verdict: Waterdrop G2P600
✔ Compact tankless reverse osmosis system
✔ Much smaller than traditional tank RO units
✔ Simple front-access filter replacement
✔ Good value compared with premium Waterdrop models
Best for: UK homes wanting strong RO filtration without paying G5 prices
Check Waterdrop G2P600 Price TodayImportant Disclosure
Waterdrop sent me the G2P600 for review.
I did not permanently install this unit, because my kitchen already uses a Waterdrop G5P700A system. However, I did:
- unbox the G2P600
- inspect the main unit, faucet and fittings
- check the filter cartridges and replacement design
- test how it fits under my sink
- compare the faucet, layout and connections against my installed G5P700A
- use my existing home water setup to explain likely real-world performance
That means this review is based on real inspection and practical comparison, not just manufacturer specs. If you’re comparing options, see my guide to the best reverse osmosis systems in the UK.
Waterdrop G2P600 Review UK Quick Verdict
The Waterdrop G2P600 looks like a strong choice for UK buyers who want:
- a tankless under-sink RO system
- a cleaner, more compact layout than traditional tank RO units
- simple front-access filter replacement
- better flow than older budget systems
- a more affordable option than Waterdrop’s premium models
Best for
- smaller UK kitchens
- buyers upgrading from bulky tank RO systems
- households that want strong RO purification without paying G5 money
Less ideal for
- buyers who want remineralisation
- buyers who want a smart digital faucet
- those who prefer a premium feel similar to the G5P700A
My First Impression of the Waterdrop G2P600
The first thing that stood out was how compact and tidy the system looks in person. It’s clearly designed to compete with traditional under-sink RO systems by removing the need for a bulky storage tank.
Compared with old-style RO setups, the G2P600 feels:
- cleaner
- more modern
- easier to place under a sink
- simpler to maintain
The overall design is minimalist, with the filters accessed from the front and the plumbing ports positioned at the top rear of the unit.
That last point matters more than people think, because connection layout can make a real difference in tight UK kitchen cabinets.
What Comes in the Box
The Waterdrop G2P600 arrived well packed, with the main unit protected by foam supports and separate packaging for the faucet and accessories.
Inside the box, I found:
- the main G2P600 unit
- the CF pre-sediment and carbon block filter
- the MRO reverse osmosis filter
- the faucet and accessory kit
- installation tubing and fittings
- instructions
The packaging felt secure and the presentation was good overall.
Build Quality and Design
The G2P600 has a clean white housing with a rounded tankless body and two large front filter bays.
What I liked immediately:
- smooth, modern finish
- compact body shape
- front-access filter design
- simple, uncluttered look
- clearly labelled inlet/outlet connections
The system looks more premium than many basic Amazon RO systems, although it does not feel quite as high-end as the G5P700A.
Still, for a mid-range tankless RO system, the design is impressive.
Filter Technology
This system uses two main cartridges:
1. WD-G2CF
This is the pre-sediment and carbon block filter.
Its job is to reduce:
- sediment
- rust
- particles
- chlorine
- odours
before water reaches the main RO membrane.
2. WD-G2P6MRO / P600
This is the multiple reverse osmosis filter, which is the main purification stage.
This is where the system tackles dissolved contaminants such as:
- fluoride
- heavy metals
- microplastics
- dissolved solids
- nitrates
- pharmaceutical residues
- PFAS-type contaminants typically targeted by RO membranes
From a buyer perspective, the key point is this:
the G2P600 uses a real RO membrane system, not just carbon filtration.
That means it sits in a very different category from Brita jugs, basic under-sink carbon filters, or electronic descalers.
Check today’s Waterdrop G2P600 PriceFiltration Performance
Do Waterdrop Reverse Osmosis Systems Reduce PFAS (“Forever Chemicals”)?
With the UK Government publishing its PFAS Plan in 2026, more homeowners are asking whether home water filters can help reduce PFAS, sometimes called “forever chemicals.”
Reverse osmosis (RO) systems are among the most effective methods for removing contaminants from tap water. According to Waterdrop’s specifications, systems use a 0.0001 micron RO membrane, which is tested for reducing PFOA and PFOS, two of the most common PFAS compounds.
Some Waterdrop RO models also reference third-party testing and certifications such as NSF/ANSI 58 (RO systems) and NSF/ANSI 372 (lead-free materials). Certification can vary by model, so always check the exact Waterdrop product page for performance details.
For UK households, it’s important to understand that:
- Drinking water in England and Wales remains high quality
- The government is reviewing PFAS regulations
- RO systems provide an additional point-of-use barrier, rather than a solution to any confirmed nationwide contamination
For a deeper dive, see our full PFAS in UK drinking water guide, which explains risks, government plans, and which filtration systems are tested for PFAS reduction.
Filter Replacement Design
One of the best design features is the front twist-out filter system.
You don’t need to dismantle the whole unit or reach awkwardly behind it to change cartridges. The front-access design should make maintenance easier in tighter cabinets.
That’s a big advantage over older RO systems where filter changes can be fiddly and messy.
From what I saw, this is one of the G2P600’s strongest practical selling points.
Faucet: Basic but Clean
This is an important point for buyers.
The Waterdrop G2P600 faucet is a basic stainless steel RO faucet.
It does not include a digital display.
That’s different from the Waterdrop G5P700A, which uses a smart faucet with a built-in TDS display. If you’re comparing models, also see this full G3P600 vs G5P700A comparison.
So if you’ve seen a digital Waterdrop faucet online, that belongs to a more premium model.
My take
The included G2P600 faucet looks neat and functional, but it is clearly a simpler setup.
If you want:
- a digital display
- real-time TDS readout
- a more premium “smart” feel
then the G5P700A is the better fit.
If you just want a straightforward stainless RO tap, the G2P600 faucet is perfectly fine.
Installation Notes: Important UK Detail
Although I did not permanently install the G2P600, I did inspect the fittings and compare how it would work in a real UK kitchen.
Connection layout
One thing I noticed is that the G2P600 connections are positioned at the top rear of the unit.
That differs from my installed G5P700A, where the connection layout sits further behind the unit.
This matters because under-sink clearance is often tight in UK cabinets. Depending on your plumbing layout, that top-rear port design may either help or slightly complicate placement.
Faucet hole size
This is another very practical detail.
For my quartz worktop, I needed a 25mm diamond hole saw for the RO faucet hole to install the G5P700A faucet.
That’s slightly larger than the 22mm many people associate with standard tap-style installations.
If you’re fitting this into quartz, composite or stone, double-check the required faucet hole size before installation. I used one like this.
Under-Sink Fit Test
I placed the G2P600 near my existing under-sink setup to get a feel for real-world space requirements.
The biggest advantage here is obvious:
it’s tankless.
That means you avoid the bulky pressure tank you get with older RO systems.
For smaller UK cupboards, that can make the difference between:
- a usable installation
- and a cramped, awkward mess
The G2P600 looks like a realistic fit for many modern UK under-sink cabinets, especially where traditional tank RO systems would feel too bulky.
Real Water Quality Context: TDS Readings in My Home
This is where I want to be very clear and honest.
I did not install the G2P600 itself, so I cannot claim the TDS photos came directly from this exact unit.
However, I do run a Waterdrop G5P700A in my kitchen already, and that gives useful real-world context for what a modern Waterdrop RO system can achieve.
My home water setup
My home also uses a Kinetico water softener.
That means the water feeding my kitchen is already softened, not raw hard tap water.
Why softened water can still show high TDS
This confuses a lot of people.
A water softener removes calcium and magnesium but replaces them with sodium through ion exchange.
So softened water often shows high TDS, not low TDS.
In my case, the softened water measured around:
- ~390 ppm
That is normal for softened water.
RO water in my installed Waterdrop G5P700A
Using my installed G5P700A system:
- the digital faucet display showed around 11 ppm
- my handheld TDS meter measured around 14 ppm from a glass sample
Small differences between meters are normal.
What this means for buyers
It shows how dramatic RO filtration can be compared with softened water alone.
Softening helps with:
- limescale
- appliance protection
- shower performance
But RO is what drastically reduces dissolved solids in drinking water.
That’s why many homes in hard water areas use:
- a softener for the house
- and RO for drinking water
The G2P600 should sit naturally in that kind of setup.
Check today’s Waterdrop G2P600 PriceWater Taste: Clean, But Possibly a Bit Flat
Another useful buyer note:
RO water often tastes very clean but slightly flat.
That’s because reverse osmosis removes almost all dissolved minerals.
Some people love that crisp taste. Others prefer a system with remineralisation, which adds small amounts of calcium or magnesium back in.
So if taste is a major priority, this is where the G2P600 and G5P700A start to separate.
G2P600
- more basic faucet
- no premium smart readout
- no remineralisation stage emphasis
G5P700A
- premium faucet
- digital TDS display
- better premium feel
- more attractive if you want a higher-end drinking water experience
If you dislike the slightly “flat” taste of standard RO water, a remineralising system may suit you better. For a higher-end system with more features, check my full Waterdrop G5P700A review.
Waterdrop G2P600 vs G5P700A
This is the comparison many buyers will actually care about.
Choose the G2P600 if you want:
- a more affordable Waterdrop tankless RO
- compact under-sink design
- easy front filter changes
- strong core RO performance
- a simpler faucet
Choose the G5P700A if you want:
- a more premium setup
- digital TDS faucet display
- a more advanced user experience
- better premium positioning overall
My honest view
The G2P600 looks like the better value model.
The G5P700A feels like the better premium model.
Want the Premium Version Instead?
If you prefer a smart faucet with built-in TDS display and a more premium setup, the Waterdrop G5P700A is the upgraded version.
It offers:
• faster filtration (700 GPD)
• smart faucet with real-time TDS display
• more advanced filtration stages
• a slightly more premium build
In my own kitchen, the G5P700A typically produces water around 11–14 ppm TDS, compared with roughly 390 ppm from softened tap water before filtration.
👉 Check the latest Waterdrop G5P700A price hereThe G5P700A is frequently unavailable through Waterdrop UK. If it is out of stock, check Amazon for current availability.
Check Price on AmazonPros and Cons
Pros
- compact tankless design
- easier to fit than traditional tank RO systems
- front-access twist filter replacement
- modern, tidy appearance
- proper RO filtration
- simpler layout than many budget RO systems
- likely strong performance for fluoride, heavy metals and dissolved solids
Cons
- I did not permanently install this exact unit, so this review is based on hands-on inspection and comparison rather than long-term use
- basic faucet only
- no digital faucet display
- may taste slightly flat compared with remineralising systems
- buyers must double-check faucet hole requirements before installation
Who Should Buy the Waterdrop G2P600?
I think this system makes the most sense for UK buyers who want:
- a cleaner upgrade from old-style tank RO systems
- strong reverse osmosis filtration
- a compact under-sink footprint
- a lower price than premium Waterdrop models
- straightforward maintenance
It is especially appealing if you:
- already have a whole-house softener
- want better drinking water only
- want to reduce limescale in kettles and coffee machines
- care about fluoride, microplastics and dissolved contaminants
Who Should Skip It?
You may want a different model if you:
- want a premium digital faucet
- prefer remineralised RO water
- want the most premium Waterdrop user experience
- already know you want a higher-end model like the G5P700A
| Feature | G2P600 | G5P700A |
|---|---|---|
| Flow rate | 600 GPD | 700 GPD |
| Faucet | Standard | Smart digital faucet |
| TDS display | No | Yes |
| Filtration | RO | RO + advanced filtration |
| Best for | Value buyers | Premium buyers |
Final Verdict: Is the Waterdrop G2P600 Worth Buying?
Yes — based on the build, layout, filter design, and practical under-sink fit, the Waterdrop G2P600 looks like a very solid mid-range tankless RO system for UK buyers.
It won’t replace the G5P700A as Waterdrop’s more premium-feeling option, but that isn’t really the point.
The G2P600 seems aimed at buyers who want:
- serious RO filtration
- a smaller under-sink footprint
- simpler maintenance
- a lower price point
That makes it a strong choice if you want the benefits of tankless RO without paying for all the premium extras.
If I were choosing based on value, the G2P600 would be very appealing.
If I were choosing based on features and premium feel, I’d still lean toward the G5P700A. You can also compare all options in my best water filter for hard water UK guide.
Where to Buy the Waterdrop G2P600
If you’re considering upgrading to a tankless RO system, you can check current availability here:
View latest G2P600 PriceFAQ
Did you install the Waterdrop G2P600?
No. I inspected and photographed the unit in detail, checked the filters and fittings, and tested its likely fit under my sink. My installed system is the Waterdrop G5P700A.
Is the Waterdrop G2P600 faucet digital?
No. The Waterdrop G2P600 includes a standard stainless steel RO faucet without a digital display.
Premium Waterdrop models such as the G5P700A include a smart faucet with a built-in TDS display.
Why does softened water show high TDS?
Because a softener removes calcium and magnesium but replaces them with sodium. TDS meters still count dissolved sodium.
What TDS did you see from your Waterdrop RO setup?
On my installed G5P700A, the faucet display showed around 11 ppm and my handheld TDS meter measured around 14 ppm.
What size hole is needed for the Waterdrop RO faucet?
In my quartz worktop installation, the faucet required a 25 mm diamond hole saw. Many standard taps use around 22 mm, but RO faucets can sometimes require slightly larger holes depending on the fitting. Always confirm the faucet dimensions before drilling.
Does the Waterdrop G2P600 reduce TDS?
Yes. Reverse osmosis systems like the Waterdrop G2P600 are designed to remove most dissolved solids from drinking water. In my home setup using a Waterdrop RO system, TDS readings dropped from around 390 ppm in softened water to roughly 11–14 ppm after filtration, showing how effectively RO systems reduce dissolved contaminants.
Does the Waterdrop G2P600 add minerals back to water?
No. The G2P600 focuses on pure reverse osmosis filtration, which removes most dissolved minerals. This can make the water taste very clean but sometimes slightly “flat” compared with mineral-rich tap water. Some systems include a remineralisation stage to add small amounts of calcium and magnesium back.
Is the Waterdrop G2P600 tankless?
Yes. The G2P600 is a tankless reverse osmosis system, meaning it does not require the large pressure tank used by traditional RO setups. This helps save space under the sink and gives the system a cleaner installation footprint.
Can the Waterdrop G2P600 be used with a water softener?
Yes. Many homes in hard-water areas combine a whole-house water softener with an under-sink reverse osmosis system. The softener protects appliances from limescale, while the RO system provides highly purified drinking water.
Related Hard Water Guides
Best Reverse Osmosis Systems UK
How to Test Tap Water Hardness
Best Water Filter for Limescale UK
Review note: Waterdrop sent me the G2P600 for review. This article is based on my own photos, hands-on inspection, practical fit test, and comparison with my installed Waterdrop G5P700A system.
