Ultra High Purity Under Sink Reverse Osmosis System with Alkaliser – 5 Stage
$799.00 – $829.00 inc. GST
You want to feel confident about the water your family drinks and you shouldn’t need to have a science degree to work out how to get toxins out of 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
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 (At a Glance)
Quick Answers
What’s the difference between the 5-stage and 4-stage RO system?
The 5-stage system includes a remineralisation filter that adds essential minerals like calcium and magnesium for better taste and balance. The 4-stage system does not include this final stage.
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 strong pumps needed to provide the water pressure required for RO systems. For tank or bore water, please explore our Rain Water Tank Filter options that provide additional sediment and bacteria removal commonly found in untreated sources.
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)
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.
Specifications
- Maximum flow rate of 3 litres per minute.
- Max filter output of approximately 200 litres per day (@60psi 25ºC).
- Micron rating: 0.0005 micron
- RO Filter system dimensions 320W x 420H x 110D mm.
- 5 litre storage tank, dimensions 317W x 203D mm.
- 5 Year Warranty
Replacement Filter Cartridges
Removes particulate matter such as sediment, rust, dirt, cloudiness from the water. Made in USA. 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).
The Omnipure Alkaliser OR AlkaHydrate Alkaliser raises pH levels, producing alkaline oxygenating qualities for healthier water. Replace every 2 years ($89 / $119).
Hassle-Free Installation
Installation of your reverse osmosis system is straightforward with the included guide and complete package of parts. All necessary fittings, tubing, and adapters are provided for a seamless setup.
We want to ensure your installation experience is easy and stress-free. Please reach out to our support team with any questions!
Storage Tanks
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.
How We Got Here And Why It Matters
When we first looked into water filters, we felt overwhelmed too. That’s why we started Living Whole – built on research and trusted products. Nearly 10 years on, with 40+ years of combined team experience, we’ve helped thousands find the right filter for their home. Here’s what they say:
Clean Water Shouldn’t Be Complicated — Just Clear, Safe, and Ready
At Living Whole, we understand you want to feel confident about what you’re putting into your body. That means having pure trustworthy water right from your tap — no second-guessing, no stress.
The frustrating reality is that tap water often contains unwanted contaminants like chlorine, PFAS, microplastics, and heavy metals, which makes you feel worried and overwhelmed about your family’s wellbeing.
We believe you shouldn’t need a science degree just to ensure your home’s drinking water is safe.
That’s why we created the Ultra High Purity Under Sink Reverse Osmosis System with Alkaliser – 5 Stage. It’s designed to make clean living simple.
Here’s how it works:
- Choose your setup (tap, tank, add-ons)
- We assemble your under sink reverse osmosis for you and send it with everything you need.
- Install it under your sink and enjoy ultra-pure, great tasting water on demand.
Don’t spend another day researching or relying on bottled water. Order your RO System today to start drinking with clarity, confidence, and peace of mind.
What You’ll Gain
- You’ll feel good knowing your water is as clean as it can be
- Freedom from bottled water and kitchen clutter
- Control of what goes into your body
What You’ll Avoid
- No more second-guessing if your water is safe to drink
- No more worries about chemicals like PFAS or Chlorine
- No more research fatigue from trying to figure out what works
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 Tap in Chrome features a sleek high-loop 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 Tap 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 features a high loop design in a matte black finish, providing hot, cold and filtered water from a single tap.
225mm W x 400mm H
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
Additional information
| Weight | 2 kg |
|---|---|
| Dimensions | 25 × 25 × 42 cm |
| Alkaliser | Alkahydrate (made in Asia), Omnipure (made in USA) |
5 reviews for Ultra High Purity Under Sink Reverse Osmosis System with Alkaliser – 5 Stage
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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.🙂