Reverse Osmosis where purity meets innovation

Advanced purification process that utilises multiple filtration stages, including sediment and carbon filters, along with specialised filtration, to deliver the highest quality drinking water.

 

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Exceptional Purity
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Taste Enhancement
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Contaminant Removal
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Convenience
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What is Reverse Osmosis

High-quality, purified drinking water

Reverse osmosis, also known as RO, is a sophisticated way to clean water. By forcing water through a semi-permeable membrane, whereby some molecules pass through but not others. This process removes contaminants, impurities, and minerals from the water.

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Best seller

ZERO Reverse Osmosis

ZERO is a patented non-electric RO system made in a compact form, including pre-treatment and post-treatment with bacteriostatic action capable of producing osmotic water with instantaneous high flow
rate.

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Features
Ideal for small spaces

Compact, inbuilt storage tanks. Eliminates leakages & contamination within the system.

Ultrafiltration stage

Maximum protection at 0.1 micro filtration and exceptional high water flow at 3 litres/minute.

Silent & non-electric

No pump or motor and can be installed easily by just connecting the RO to your home system.

Crystal, Clear, Drinking Water

Discover the benefits of using Culligan Reverse Osmosis systems
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Exceptional Purity

RO systems are capable of removing up to 99% of dissolved salts (ions), particles, colloids, organics, bacteria, and pyrogens, ensuring that the water you drink is exceptionally pure

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Taste Enhancement

By filtering out impurities, RO systems can significantly improve the taste and odor of water, providing you with a better drinking experience

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Contaminant Removal

RO is highly effective at removing harmful impurities like pesticides, chemicals, heavy metals, water-borne bacteria, and viruses, making the water safer to drink

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Cost-Effective

Using an RO system can save money in the long run by reducing the need to purchase bottled water, as it provides a continuous supply of clean water at home

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Switch to filtered water and make a difference

Reduce plastic waste
7.7 BILLION single-use plastic water bottles are consumed every year in the UK
Save the planet
217 single-use plastic bottles are saved by one person drinking filtered water once a day for a year.
450 YEARS is the time it takes to decompose a single use PET water bottle.
Be the change!

Explore Our Reverse Osmosis Products

Reverse Osmosis Filter System
ZERO
  • Ultimate Filtration
  • Non-Electric
  • No storage tank required
  • Quiet and Compact
  • Reduces PFAS, sand, dust, bacteria, scale, viruses, chlorine, heavy metals, dissolved salt, bad taste and odours
3-stage filtration system
So Clear
  • 3-stage ultra filtration
  • Non electric
  • No storage tank required
  • Reduces sand, dust, odour, sediment, chlorine, 99% bacteria, viruses and lead

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OFFER
Free water filter installation For exceptional water throughout your home

When purchased with a HarveyArc Water Softener.

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Installation

Experienced installers

Our friendly installation experts are qualified plumbers who have undertaken extensive training so that your drinking water system and water softeners are installed perfectly.

Our team is proud of it’s first-time fit rate to ensure that your drinking water system is installed by our friendly experts and you can rely on our helpful aftercare to answer any questions you may have.

Read more about installation

Frequently Asked Questions

Have any questions? We’re here to help.

PFAS – also known as ‘forever chemicals’ – represent a group of thousands of chemicals, with hundreds used commercially across many sectors of industry and society. These chemicals were used since the 1940s to repel oil and water and resist heat, which makes them useful in everyday products such as non-stick cookware, stain resistant clothing, and firefighting foam. More >

No, our range of RO systems do not re-mineralise by default but this is generally down to personal choice. If you wish to add the minerals back into your drinking water, you would need to add a Re-mineral (Remin) cartridge to your set up which would take the filtered water through it. Talk to our team today in regards to our Remin options and how we can supply you with clean, fresh and healthy drinking water 24/7.

Yes, both reverse osmosis systems and in-line filters can be used for drinking and cooking purposes. However, reverse osmosis systems provide a higher level of purification, making them suitable for areas with poor water quality or specific contamination concerns. In-line filters are more focused on improving taste and reducing basic impurities.

In-line water filter systems are more space-efficient as they are compact and do not require additional storage tanks, making them ideal for small spaces where limited installation space is available. However, some Reverse Osmosis systems are now suitable for under-the-sink installation such as the Profine ZERO Reverse Osmosis Water Filter System.

Reverse osmosis systems generally require more maintenance due to multiple filtration stages and periodic membrane replacement. In-line filters have simpler maintenance requirements, typically involving regular filter replacements.

Yes, reverse osmosis systems are typically more expensive due to their advanced filtration technology and additional components required for the process.

Reverse osmosis systems generally offer higher filtration efficiency by removing more contaminants, making them ideal for areas with poor water quality. In-line filters are suitable for improving taste and removing basic impurities, making them more suitable for areas with relatively good water quality. If you’re uncertain of you areas water quality you can contact your mains water supplier.

Regular maintenance includes periodic filter replacements according to the manufacturer’s guidelines and occasional cleaning or flushing of the system for optimal performance.

Despite higher upfront costs, reverse osmosis systems can be cost-effective over time by reducing the reliance on bottled water, energy costs and potential health-related expenses.

While traditionally reverse osmosis systems do generate some waste water, newer and more modern models have become more efficient, incorporating features to minimise and eliminate water wastage.

Reverse osmosis can effectively remove a wide range of contaminants, such as chlorine, fluoride, heavy metals, bacteria, viruses, and various dissolved solids.

Filters in an RO system typically require replacement every 6-12 months, although this timeframe may vary depending on water quality and usage or manufacturer recommendations. Always check with your manufacturer or user guide.