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.
- 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.
- Filter replacement costs range from $69-$119 per year, plus $149 for the RO membrane every 3–6 years.
Description
Specifications
- Filter life Sediment Pre-Filter & Carbon Filters: 6-12 months
- Filter life Membrane: 3-6 years
- Filter life remineraliser: 2 years
- 0.0005 Micron
- Maximum flow rate: 3 litres per minute
- Maximum filter output: 200 litres per day
- Warranty: 5 years (housing)
- Temperature Range: 5°C – 25°C
- Water source: Townwater (Mains)
- Dimensions System: 32 cm (W) x 42 cm (H) x 11 cm (D)
- Dimension 5-litre storage tank: 32 cm (W) x 20 cm (D)
- Watermark Certificate Number 52014
Certified Under Sink Water Filtration
This system meets the WaterMark specification AS/NZS 3497 Drinking water treatment unit – Plumbing requirements.
Certificate Number 52014.
- Fluoride
- Aluminium
- Barium
- Cadmium
- Chlorine
- Chromium
- Copper
- Cryptosporidium & Giardia
- Cysts
- e. Coli Bacteria
- Heavy Metals
- Hydrocarbons
- Iron
- Lead
- Manganese
- Mercury
- Microplastic
- Nitrate
- PCB’S
- PFAS
- Potassium
- Radium
- Sediment, Dirt & Rust
- Selenium
- Sodium
- Fluoride
- Aluminium
- Barium
- Cadmium
- Chlorine
- Chloramine
- Chromium
- Copper
- Cryptosporidium & Giardia
- Cysts
- e. Coli Bacteria
- Heavy Metals
- Hydrocarbons
- Iron
- Lead
- Manganese
- Mercury
- Microplastic
- Nitrate
- PCB’S
- PFAS
- Potassium
- Radium
- Sediment, Dirt & Rust
- Selenium
- Sodium
Everything You Want to Know
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What's included in the system
This reverse osmosis water filter comes pre-assembled with the first set of cartridges, housing, 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 ($69)
Carbon Filters (2x): every 12 months (2x $69)
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?
There is no performance difference — it simply comes down to personal preference in brand or price.
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.
Replacement Filter Cartridges for
Ultra High Purity Under Sink Reverse Osmosis System with Alkaliser
We know you want to protect your family from toxins without stripping the water dead. That’s why we don’t compromise on components. Your system is powered by genuine Omnipure filters—manufactured in the USA for over 50 years to deliver consistent, certified purity you can taste.
Removes particulate matter such as sediment, rust, dirt, cloudiness from the water. For best results we recommend replacing every 6-12 months. Made in USA ($69).
Effectively reduces PFAS, Chlorine, Chemicals, Taste & Odour. NSF 42 certified. For best results, we recommend replacing every 6-12 months or 7,500L depending on water quality. Made in USA ($69).
Effectively removes up to 99% of PFAS, fluoride, microplastics, bacteria. The membrane screens to 0.0005 micron for pristine drinking water. Replace every 3-6 years. Made in USA ($149).
4th Stage AlkaHydrate OR Omnipure Alkalising Cartridge
The Omnipure Alkaliser OR AlkaHydrate Alkaliser raises pH levels, producing alkaline oxygenating qualities for healthier water. Replace every 2 years ($89 / $119).
You just want to feel good and trust your tap — without needing a chemistry degree
You’ve read about fluoride, heavy metals, and pH levels until your head spins. You shouldn’t have to be a scientist just to keep your family safe. We’ve done the heavy lifting so you can simply enjoy the water.
- Stop guessing and feel 100% certain about what’s entering your body.
- Fill the kettle, cook dinner, and hand your child a glass with zero hesitation.
- Enjoy crisp, remineralised water that actually makes you want to drink more.
- A water filter that sits quietly out of sight, working hard so you don’t have to.
It’s not just about filtration technology; it’s about creating a home where the tap is a source of wellbeing, not worry.
3 Simple Steps to Safer Water — with Free Shipping Australia-Wide:
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.
Trusted by Thousands of Australian Families for Nearly a Decade
We founded Living Whole to take the confusion out of choosing a water filter. Backed by nearly 10 years in business and over 40 years of combined team experience, we’ve helped thousands of Australians find the right filter for their home. Research backed, reliable, and trusted in our own households.
Choose Your Under Sink Water Filter Tap
All our under sink water filter taps include a base plate and connection fittings.
* PLEASE NOTE: the width (W) refers to the dimension from the centre line of the tap body to the centre of the spout.
Retro with High Loop
Standard Retro faucet in a high loop design and long reach.
125mm W x 235mm H
Metro with High Loop
Standard Metro faucet in a high loop design.
160mm W x 250mm H
Antique
Standard Antique faucet in a high loop design.
125mm W x 235mm H
Euro with Long Reach
Standard Euro faucet in a long reach design.
150mm W x 230mm H
Side Lever High Loop 3-Way Mixer Chrome
The Side Lever High Loop 3-Way Mixer in Chrome features a sleek design, providing hot, cold, and filtered water from a single tap.
203mm W x 365mm H
Side Lever Long Reach 3-Way Mixer Chrome
The Side Lever Long Reach Mixer Tap features a simple yet elegant design, providing hot, cold, and filtered water from a single tap.
195mm W x 325mm H
3-Way Mixer Tap Standard Chrome
The 3-Way Mixer Standard Chrome comes in a sleek long-reach design, providing hot, cold, and filtered water from a single tap.
245mm W x 180mm H
Stainless Steel 3 Way High Loop Matte Black Mixer Tap
The Stainless Steel 3 Way Mixer Tap with high loop in a matte black finish, providing hot, cold and filtered water from a single tap.
225mm W x 400mm H
Designed to Be Straightforward — With Support When You Want It
You don’t need to be a plumber — Just someone who cares about their home and wellbeing. Our systems are designed for people who want to create a safe home without overcomplicating things. Everything is thoughtfully built so installation is logical and achievable. You can choose to connect the system yourself or have your local plumber handle the install.
- We build it. You connect it.
- Our step-by-step guide, backed by local Australian support, means you’re never left guessing.
Choosing Living Whole means joining a community that values better water, every day.
How does the Reverse Osmosis Membrane Work?
A reverse osmosis membrane is a thin film with tiny pores that permit only water molecules to pass through, blocking all contaminants. It’s made of a semi-permeable material that allows water flow but blocks dissolved salts, organics, bacteria, and pyrogens. When pressurised, pure water diffuses through the membrane into the permeate flow, leaving contaminants behind. Reverse osmosis removes up to 99% of impurities.
Polluted water is forced through the semi-permeable membrane by mains pressure. Pure water passes easily, while pollutants larger than.0005 microns are washed away into a waste stream that goes down the drain. This waste stream contains all of the filtered-out contaminants, including pesticides, metals, bacteria, and viruses. Reverse Osmosis systems are consistently one of the better PFAS water filters and water filters that filters fluoride as well.
Data Sheets & Test Reports
Still deciding? Compare this model with our other Premium Reverse Osmosis Filter to find the perfect match.
Additional information
| Weight | 2 kg |
|---|---|
| Dimensions | 25 × 25 × 42 cm |
| Alkaliser | Alkahydrate (made in Taiwan), Omnipure (made in USA) |
6 reviews for Ultra High Purity Under Sink Reverse Osmosis System with Alkaliser – 5 Stage
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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.🙂