RO-5U Reverse Osmosis Water Purifier - System Only

Rated 5.0 out of 5
Based on 2 reviews
Regular price
$1,340.00 Incl. GST
Sale price
Now $1,340.00 Incl. GST
Regular price
Was $1,675.00
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Unit price
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  • Free Shipping
  • In Stock 7-10 Business Days Delivery*
  • 12 Months Warranty For Parts & Labour*

Key Features

  • Advanced technology to ensure optimum performance
  • Great tasting, purified alkaline water at the turn of a tap
  • Stylish design to suit your lifestyle
  • Plumbed neatly under your sink
  • Leaves your kitchen bench clean and uncluttered
  • Easy to use touch panel
  • Quick change cartridges for easy maintenance

Contaminants Removal

  • Unpleasant Taste and Odour
  • Bacteria and Viruses (e.g. E.coli)
  • Parasites and Cysts (e.g. Giardia & Cryptosporidium)
  • Sediment and Turbidity (e.g. sand, dirt and rust)
  • Chlorine and other Disinfection Chemicals
  • Fluoride and other Total Dissolved Solids (TDS)
  • Herbicides and Pesticides
  • Heavy Metals e.g. lead and mercury
  • Volatile Organic Compounds (VOCs) e.g. benzene


*RO-5U Reverse Osmosis Water Purifier price is supply only – installation is not included.

*This system requires installation by a registered plumber in order to be covered under our 12 month parts and labour warranty.  If located in a serviceable area, Pure Water Systems can organise installation on your behalf.

*Cartridges may be subject to replacement earlier than the recommended period. This is dependant on individual usage and varying Australian water quality.

Product Description

The RO-5U Reverse Osmosis Water Purifier is the latest in health innovation and reverse osmosis water purification technology.

Exclusive to Pure Water Systems, the system combines technology and stylish design to deliver purified, alkaline water for a vitalised body and peace of mind.

Pure, chemical free water means no unpleasant taste and odour, just great tasting water for you and your family – simply at the turn of a tap.

Perfect for drinking and food preparation, purified alkaline water ultimately protects your body from absorbing contaminants found in both tank and chemically treated town water.

Filtering down to submicron (0.0001) level, the RO-5U effectively removes up to 96% of total dissolved solids (TDS) and volatile organic compounds (VOCs).

The stylish RO-5U has been designed to complement any home and lifestyle and sits neatly concealed under the bench leaving your kitchen free from clutter. 

Electronic monitoring with digital touch panel

The RO-5U’s built-in electronic monitoring systems ensure the systems produces the highest quality water around the clock, with a 24-hour water quality monitor measuring TDS levels.

The system is protected by auto leak detection and performance alerts, conveniently displayed on the easy to use digital touch panel, giving you peace of mind at the press of a button. 

Easy maintenance

Maintaining the RO-5U couldn't be easier. The automatic back-flush function runs periodically to protect and prolong the life of the reverse osmosis membrane.

The system will alert you when TDS levels are too high or when it is time to change the filter cartridges (every 2 years for the membrane and every 12 months for standard cartridges). Thanks to a patented design, cartridges can be replaced with a simple ‘twist and click’… no tools required!

Faucet and 3 Way Mixer Tap Upgrade Options

Designed to complement any kitchen style, the RO-5U Reverse Osmosis Water Purifier is available with faucet and premium 3 way mixer tap upgrade options. 

Upgrade to:




The RO-5U uses a 5 stage reverse osmosis (RO) process to produce purified, alkaline water with a consistent level of pH 8+.

The purified water is held in a 8 litre, pressurised holding tank until it is needed. It then passes through the final stage of filtration, transforming into alkaline water, fresh and ready for drinking.

Filtering down to submicron (0.0001) level, the RO-5U effectively removes up to 96% of total dissolved solids (TDS) and volatile organic compounds (VOCs).


  1. Sediment Cartridge – The Sediment Cartridge effectively removes sediment particles such as sand, silt, dirt, rust and other impurities.
  2. GAC Cartridge – The Granular Activated Carbon Cartridge (GAC) effectively removes volatile organic compounds (VOCs) and many other potentially harmful chemicals.
  3. Carbon Block Cartridge – The Carbon Block Cartridge effectively removes chlorine to protect the RO membrane. It absorbs harmful organic compounds, removing bad taste from drinking water.
  4. RO Membrane Cartridge – The RO (Reverse Osmosis) membrane effectively removes chemicals, total dissolved solids (TDS), metals, bacteria and viruses.
  5. GAC + Alkaline Cartridge (50) – The GAC and Alkaline Cartridge is the final stage of filtration; it refreshes the water in the holding tank, raising the water to a consistent alkaline level
    (pH 8+). This stage of filtration can be customised to suit varying water quality.


Height = 390mm

Width = 245mm

Depth = 390mm


Installation is required by a licensed plumber and requires access to a 240V electrical outlet. Supplied with Power Lead (2.5m).


average rating 5.0 out of 5
Based on 2 reviews
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100% of reviewers would recommend this product to a friend
2 Reviews
Reviewed by Craig S.
Verified Reviewer
I recommend this product
Rated 5 out of 5
Review posted

Amazing system works great with Tank water pump

This system is amazing! For years at our holiday house where we have tank water and with a standard house pump it struggled with sub micron standard filtration systems.

I purchased the unit with an extra booster pump thinking it would also struggle, yet the internal pump of the RO5U worked perfectly with our standard Davey house pump (36psi) and returning the extra pump for a refund was no issue at all. Sandra and pure water have fantastic customer support. I wouldn’t look anywhere else just buy this unit from them and you will be happy!

Rain water is also quite acidic (ours was pH5.5) as there are no minerals/buffers and the pure alkaline water the RO5U produces is amazing and so lovely to drink!!!! To be honest I was an alkaline water sceptic and just wanted the unit for clean tank water but i am now converted!

100% recommend this product

Was this helpful?

Pure Water Systems

Thank you, Craig, we really appreciate your feedback. We are happy to hear that you did not need an extra pump. Sandra and our entire Customer Service team pride themselves the satisfaction of all of our customers, and it is great to hear you were able to return the extra pump without an issue. Enjoy the Ro-5U! The Pure Water Systems Team

Reviewed by Armin K.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

RO-5U excellent product

Easy to install, fits nice and neat under the sink, easy to use and water purification is excellent. Overall great system.

Was this helpful?

Pure Water Systems

Thank you for your feedback, Armin. The RO-5U is exclusive to us and we love how easy to use it is, and you will find it is also really easy to maintain. It is so convenient to have great tasting, purified alkaline water at the turn of the tap!

We appreciate your feedback - The Pure Water Systems Team