5 Stage Under Sink RO System

£180.00 Incl. VAT

Our 5 Stage Under Sink RO System is recommended for drinking water applications, able to produce up to 227 litres per day (50 gallons). The system comes with a 12 litre water storage tank to ensure purified drinking water is always available on demand. Featuring dual sediment and carbon pre-filtration, high quality 50GPD RO membrane, carbon post filter and a drinking water faucet for dispensing. Supplied pre-assembled ready for installation, with a comprehensive product manual.

Product Features
  • Complete 5 stage RO system supplied with faucet
  • Includes a water storage tank for on-demand use
  • Removes contaminants such as fluoride and PFAS
  • High quality 50 gallons per day membrane
What Is Included
The 5 Stage Under Sink RO system comes pre-assembled with everything you need to get started, including all membranes, pre-filters and post-filters. You also get several useful accessories including a drinking water faucet for easy dispensing and a 12 litre water storage tank for on-demand usage. A full instruction manual is also included within the box.
Installation Info
This system utilises push fit connections and flexible tubing for an easy installation. Supplied pre-assembled, simply connect the inlet to a water supply, then connect the outlet and drain lines before it is ready to use. A minimum feed water pressure of 3 bar is required to operate this system.
Help & Advice
Need help or advice with this product? No problem, drop us an email, start a live chat or give us a call on 01622 933 853 and we’ll be sure to help.

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5 Stage Under Sink RO System
5 Stage Under Sink RO System
£180.00 Incl. VAT

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5 Stage Under Sink RO System
5 Stage Under Sink RO System
£180.00 Incl. VAT
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5 STAGE UNDER SINK RO SYSTEM

Purified Drinking Water On Demand

The 5 Stage Under Sink RO system is an excellent option for producing purified contaminant-free drinking water on demand. Designed for under-sink installation the system boasts favourable dimensions measuring just 40cm tall, 36cm wide and 14cm deep (excluding water storage tank) which makes it suitable for most kitchen sinks or cupboards. The water storage tank features a 12 litre capacity that proactively refills with use, ensuring purified water is always available on demand at a good flow rate.

Why Use A Reverse Osmosis System?
Reverse osmosis removes up to 99% of dissolved contaminants including fluoride, lead, nitrates and PFAS – giving you great-tasting purified drinking water without health concerns. It’s an excellent choice for the health-conscious customer, as well as those with a water softener that would like to eliminate excess sodium from their drinking water.

How Long Do The Filters Last?
The pre and post-filters should be changed every 12 months, with the RO membrane lasting up to 3 years depending on water quality. As a guide, the membrane should be replaced when you notice a drop in flow rate or a change in water quality.

Why Choose Our 5 Stage Under Sink RO System?

  • Removes up to 99% of dissolved contaminants
  • Long life membrane which lasts up to 3 years
  • Compact design for under sink installation
  • Recommended for use with drinking water
  • Supplied pre-assembled ready to install

Compatible Products:
5 Stage Under Sink RO Filter Kit

Reverse Osmosis Solutions

We’re pleased to offer a comprehensive range of reverse osmosis solutions, from full systems to replacement membranes and accessories. Can’t find exactly what you’re looking for? Get in touch with a member of our team today.

Browse all Reverse Osmosis solutions →

Reverse Osmosis Solutions

Additional Information

Suitable For

Home & Office, Drinking Water
Under Sink, Aquariums
Food & Beverage

Supplied With

Reverse Osmosis System
12L Water Storage Tank
Chrome Drinking Water Faucet
Filter Cartridges & RO Membrane
Pipes, Fittings & Instruction Manual

System Dimensions

Height 400mm
Width 360mm
Depth 140mm

Tank Dimensions

Width 360mm
Diameter 280mm

Flow Rates

227 Litres Per Day (50 Gallons)

Feed Pressure

3 Bar Minimum


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Pete Cossar
7 October 2026
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Very pleased with the service. There was an issue with the water softener I ordered initially, but then following communications made the replacement process quite pleasant. Happily recommend this company. Thanks to Becky for working with me. Great follow up support 😊😊😊
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Michael Fey
2 October 2026
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Very Pleased with the services from the Sales Team
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Guy Brennan
26 September 2026
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First time using this company and product and i wasnt dissappointed. Communication was easy and quick resulted in an easy order and now having fitted the filter i can say its a great product easy to install and appears good quality apart from the four mild steel bracket screws stainless would have been better considering the environment these are fitted. All in all, very pleased and would highly recommend .
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Graham Quinn
25 September 2026
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Easy to order and fast delivery
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Steve Griggs
14 September 2026
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Excellent local company and genuinely lovely people to deal with. Really helpful and knowledgeable, with great advice about my water softener and the correct salt to use. They even gave me some resin cleaner at no charge, which was a very kind gesture. Fantastic friendly service and I’ll definitely be returning for my salt in future. Highly recommended.
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Don Carless
7 September 2026
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Excellent service. Product proved my softener was not working as it should. I fully serviced it and cleaned with Resin Clean returned to service and it is now working as designed. Very pleased.
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J P
27 August 2026
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If you're thinking about a water softener then i HIGHLY recommend Ultra Soft Water Softeners Ltd. Great softeners and exceptional customer service. The water softener I bought needed some adjustments with the installation setup where I supported throughout. The customer service is honestly next level. I had countless calls with Becky Gillett, the Sales Manager, over a period of months to get to the bottom of it. She was incredibly patient with me, staying on the phone and doing video calls to walk me through the programming instructions step-by-step while I changed the settings and ensured all was installed correctly. All the staff here have been great, but Becky really stuck with me from start to finish to make sure it was sorted and working well. It runs like a dream now. HIGHLY recommend them!
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Chris Collins
26 August 2026
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Easy to order, good prices and delivered on time. What more can you ask for.
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John L
26 August 2026
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Good rapid & efficient service
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Tony Hybel
17 August 2026
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Easy to order, quick delivery, good communication. Resclean worked a treat; one treatment cycle and soft water is back again from our 12 yr old softener!