Ultra High Purity Under Sink Reverse Osmosis System with Alkaliser – 5 Stage
Price range: $939.00 through $969.00 inc. GST
You’ve done your research and know exactly what you want (and what you don’t want in your water).
- US made filters and 0.0005 micron RO membrane remove fluoride, chlorine, PFAS, bacteria, viruses, microplastics, heavy metals.
- A remineralisation stage adds essential minerals back into the water for a balanced taste.
- Includes Leak Stopper & Filter Life Monitor ($99 value) for total peace of mind.
- Includes sleek Retro High Loop chrome filter faucet ($79 value)
- Features NSF-certified components and is Watermark certified (AS/NZS 3497:1998).
- Hand-built in Sydney with US-made parts. Includes a 5-year housing warranty.
- A complete no-electricity-required undersink system with filters, tap, tank, and all parts.
- Annual filter replacement costs $202, remineraliser every 2 years $89, and $149 for the RO membrane every 3–6 years.
Description
Certified Under Sink Water Filtration
- PFAS
- Aluminium
- Cadmium
- Chloramine
- Manganese
- Microplastic
- PCB’S
- Radium
- Selenium
- Cryptosporidium & Giardia
- Lead
- Nitrate
- Sediment, Dirt & Rust
- Chloramine
- Cysts
- Heavy Metals
- Iron
- Fluoride
- Barium
- Chlorine
- Chromium
- e. Coli Bacteria
- Hydrocarbons
- Mercury
- Potassium
- Sodium
Trusted by Australian Families
“Fantastic quality and the difference in our tank water is night and day.”
Mark R.
Toowoomba, QLD
- Verified Buyer
“Easy to install and our whole house water feels so much cleaner.”
Sarah T.
Toowoomba, QLD
- Verified Buyer
“Great system, solid build and excellent support from the team.”
James L.
Toowoomba, QLD
- Verified Buyer
Replacement Filters
$89.00 – $119.00
OR
Remineralising & Alkalising
Replace every 2 years
- Special Offer
Bundle & Save: Complete Replacement Pack
Secure your clean water upfront and save
Secure your clean water upfront and save. This complete pack includes 1x Sediment Filter and 2x Activated Carbon Filters, with the option to bundle your RO Membrane and Alkaliser at a discounted rate.
Will it fit under my sink?
Simple, low-fuss systems that attach directly to your existing kitchen faucet in minutes with no plumbing required.
Reverse Osmosis Storage Tanks
Dimensions (All measurements in millimeters)
Choose the 5L tank for 1–3 people or small spaces, or upgrade for larger households. All tanks provide high-pressure flow and flexible installation options.
5-Stage Manifold Dimensions
All measurements in millimeters
Compact, space-efficient design that fits comfortably under most kitchen sinks for quick and hassle-free installation.
Under Sink RO Filter Installation Diagram
Simple, low-fuss systems that attach directly to your existing kitchen faucet in minutes with no plumbing required.
Red
Feed Water in (From Cold Water Supply)
Black
Waste Water Out (To Drain)
White
Tank Connection (Filtered Water to Tank)
Blue
Purified Water Out (To Tap)
Filtered Water Taps
Your system includes a standard filter tap. If you prefer to avoid drilling an extra hole, you can choose one of these 3-way mixer upgrades. All our under sink water filter taps include a base plate and connection.
PLEASE NOTE: the width (W) refers to the dimension from the centre line of the tap body to the centre of the spout.
Retro High Loop
Classic styling with a high-arc for easy filling.
- High Loop
- Solid Brass
- Height:
320 mm
- Reach:
165 mm
- Spout clearance:
245 mm
Metro with High Loop
Sleek modern design for contemporary kitchens.
- High Loop
- Lead-Free Brass
- Height:
320 mm
- Reach:
160 mm
- Spout clearance:
245 mm
High Loop Stainless Steel
Durable 304 stainless steel with a premium brushed finish.
- 304 Stainless Steel
- Brushed Finish
- Height:
310 mm
- Reach:
165 mm
- Spout clearance:
245 mm
Euro with Long Reach
Extended reach for larger sinks and more workspace.
- Long Reach
- 360° Swivel
- Height:
320 mm
- Reach:
165 mm
- Spout clearance:
245 mm
Stainless Steel Tall 3-Way
Tall profile with 3-way functionality for filtered and regular water.
- Brushed Finish
- 3-Way Function
- Height:
320 mm
- Reach:
165 mm
- Spout clearance:
245 mm
Side Lever High Loop
Ergonomic side lever control with elegant high-arc design.
- High Loop
- 3-Way Function
- Height:
320 mm
- Reach:
165 mm
- Spout clearance:
245 mm
Euro with Long Reach
Extended reach for larger sinks and more workspace.
- Long Reach
- 360° Swivel
- Height:
320 mm
- Reach:
165 mm
- Spout clearance:
245 mm
Euro with Long Reach
Extended reach for larger sinks and more workspace.
- Long Reach
- 360° Swivel
- Height:
320 mm
- Reach:
160 mm
- Spout clearance:
245 mm
What's included in the system
This reverse osmosis water filter comes pre-assembled with the first set of cartridges, housing, leak stopper & filter life monitor, tank, tap, hoses, screws, locking clips, and all components required for installation (excluding tools).
How often do I need to change the cartridges and how much do they cost?
Sediment Pre-Filter: Every 12 months ($44)
Carbon Filters (2x): every 12 months (2x $79)
Membrane: Every 3–6 years – depending on water quality and usage ($149)
Remineraliser: Every 2 years (AlkaHydrate $89, Or Omnupure Alkaliser $119)
Is this the right RO system for me?
Reverse osmosis provides the most thorough water filtration available. If you have standard under-sink space, the 5-Stage Ultra High Purity is exactly what you need for ultimate peace of mind. It tackles harsh water and older plumbing with a dedicated sediment pre-filter, then adds essential minerals back in for perfectly balanced, healthy hydration.
Tight on space? If you have a smaller kitchen, or limited under-sink room, check out our Compact 4-Stage Reverse Osmosis Filter with Alkaliser. It offers the same premium purification in a streamlined design—perfect for tight spaces.
What’s the difference between the Alkahydrate and the Omnipure remineraliser?
Choose Omnipure for a 100% USA-made internal filter path, or Alkahydrate for our most popular, cost-effective alkalising option.
Can I use this RO system for tank and bore water?
This system is best suited for town (mains) water. Tank water sources often lack the required water pressure required for RO systems. For tank or bore water, please explore our Rain Water Tank Filter options.
Choose your reverse osmosis system with desired setup and join our Pure Water Tribe.
Hand-built for you in Sydney and shipped with tracking so you know it’s on the way.
Install, turn on your tap and feel at home with others who trust what they drink.
Product Resources & Documentation
Additional information
| Weight | 2 kg |
|---|---|
| Dimensions | 25 × 25 × 42 cm |
| Alkaliser | Alkahydrate (made in Taiwan), Omnipure (made in USA) |
9 reviews for Ultra High Purity Under Sink Reverse Osmosis System with Alkaliser – 5 Stage
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Emily –
Filter system has been easy to install and use. Customer service is wonderful.
Living Whole –
Thank you so much for your lovely review, Emily! We’re so glad to hear the system was easy to install and that you had a great experience with our customer service. We really appreciate your support!
Paul Blahuta –
Fantastic team.
Very thorough and extremely patient with articulation of product and maintenance.
Living Whole –
Thank you so much for your lovely feedback! We really appreciate your kind words and are so glad we could help. Thank you for your support!
Leroy –
I couldn’t be happier with my 7 stage RO system.
The water it produces is fantastic to drink and has improved my hydration vastly!
I did allot of homework on which system was the best quality and most affordable. I’m very happy I went with living whole.
The team were extremely helpful to trouble shoot the installation, and Janka is the absolute best to deal with, she’s so helpful and knowledgeable.
Very happy cutomer.
Living Whole –
Thank you so much for your wonderful review! I’m so happy to hear you’re loving your RO system and noticing such a difference in the water quality. Thank you as well for your kind words, it really means a lot. We truly appreciate your support!
Britt –
We are obsessed with our water filter! The taste compared to normal tap water is incredible and I love knowing that my family is drinking the cleanest water possible. Janka & the team at Living Whole were also so helpful when it came time to replace my filters. Highly recommend!
Living Whole –
Thank you so much, Britt 💛 We absolutely loved hearing how much you and your family are enjoying your water. We really appreciate your kind words and recommendation!
Becks –
Very much worth the money. The whole family have been commenting on how good the water tastes. Excellent customer service from Janka and the team!
Living Whole –
Thank you so much for the fantastic review Becks! We’re happy to hear that you and your family are enjoying the taste of the water. It was a pleasure assisting you and we truly appreciate your kind words about our team.
Emily Parker –
I knew our water had fluoride and other contaminants, but I wasn’t sure what system to choose. After doing some research, I decided on the 5-stage reverse osmosis system and I’m so glad I did. It was easy to install, the water tastes amazing, and I finally feel at ease knowing my family is drinking clean, filtered water every day.
Andre van Heerden –
Great System
Living Whole –
Hi Andre, thanks for your review!
Jim Fox –
Brett was very helpful on the phone. Got a plumber to install system and thus far all is good. The initial aeration in the water has gone and taste improves the more the system is used. Now taste is quite good.
Living Whole –
Thank you for your feedback, Jim! Great to hear the system is working well and you’re happy with the water taste.😊
Vath Lee –
I found Janka to be very helpful and responsive to my queries.
Living Whole –
Hi Vath, thanks for your feedback! We’re glad to hear Janka was able to help.🙂