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Undersink Reverse Osmosis Systems

Why Choose an Under Sink Reverse Osmosis System?

Under sink RO systems are compact and installed directly beneath your kitchen sink, providing a convenient and space-saving solution for your water filtration needs. These systems connect to your existing plumbing and deliver purified water through a dedicated faucet, ensuring you have access to high-quality water whenever you need it.

A lady washing fruit under purified water

Experience the Benefits

Investing in an under sink reverse osmosis system brings a multitude of benefits:

Healthier Drinking Water
Remove harmful contaminants and enjoy safer water for your family.

Better Taste
Say goodbye to unpleasant tastes and odours often found in tap water. Your cooking will improve, and flavours will be enhanced.

Cost Savings
Reduce or eliminate the need for bottled water, saving you money in the long run.

No More Plastic Bottles
We all need to do our bit !! Decrease plastic waste by using a sustainable water filtration solution.

wasted plastic bottles on a beach

What is Reverse Osmosis and How Does it Work?

Reverse osmosis is a water purification process that uses a semi-permeable membrane to remove impurities and contaminants from water. When water passes through this membrane, it effectively filters out particles, including bacteria, viruses, heavy metals, and other harmful substances. The result is clean, safe, and fresh-tasting water that's ideal for drinking, cooking, and using in appliances like coffee makers and humidifiers.

All our Under Sink Reverse Osmosis Systems are compact, will fit under most sinks, and are manufactured by Global companies.

Tankless vs. Tank-Based RO Systems

Tankless RO Systems:

Space-Saving Design: Without a storage tank, these systems take up less space under your sink.

Instant Filtration: Water is filtered on demand, providing a continuous supply of fresh water.

Reduced Contamination Risk: Since water isn't stored in a tank, there's less chance of recontamination.

Higher Flow Rates: Many tankless systems offer faster flow rates, so you won't have to wait long for your glass to fill.

Tank-Based RO Systems:

Storage Capacity: These systems include a storage tank that holds filtered water, ensuring you have a reserve supply.

Consistency: The storage tank ensures a steady supply of filtered water, even during peak usage times.

Economical: Generally, tank-based systems can be more affordable upfront.

Simple Technology: The technology behind tank-based systems is well-established and reliable

An under sink reverse osmosis water system with SMART Faucet

Are you looking for a compact, tankless RO System?


Introducing the Waterdrop G3P600

  • Over 2m units sold worldwide
  • 8 Stage Filtration Process
  • Small footprint and designed to easily slot into standard under-sink cabinets (Just 6" Width required)
  • Smart LED Faucet included
  • Total Dissolved Solids (TDS) monitor, see how pure your water is
  • 30 min installation and 3 Second Filter Replacement

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An under sink reverse osmosis water tank, filters and faucet

Or would you prefer an RO system with a built-in tank?

Introducing the Tapworks ERO385

  • An almost perfect 1:1 process water ratio (no waste water)
  • Generates 50 gallons of purified water daily
  • Global Manufacturer with over 100 years experience
  • Removes over 99% of Lead
  • Straightforward installation with faucet provided
  • Long life warranty
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Easy Installation

Worried about installation? Don't be! Our under-sink RO systems are designed with user-friendliness in mind. All systems come with comprehensive installation guides and all the necessary components for a DIY installation. However, if you prefer professional help, many plumbers are experienced with these systems and can have your new RO unit up and running in no time.

We are dedicated to helping you achieve the highest water quality in your home. Browse our selection of Under Sink Reverse Osmosis systems today and take the first step towards cleaner, healthier water. If you have any questions or need assistance, our knowledgeable team is here to help!

Regal Flow offer a price match or even a price beat on all Under Sink Reverse Osmosis Systems, so If you find a better offer, simply call us at 0121 630 1130 to speak with a human being, or contact us through the WhatsApp icon or the Contact Us page

All our Under Sink Reverse Osmosis Systems come with fast, free delivery

Unsure about installation or which product is best for you?
We are here to help. If you have any questions or require assistance, please do not hesitate to contact us either on 0121 630 1130 or email us at info@regalflow.co.uk
Why buy from us
Unsure about installation or which product is best for you?
We are here to help. If you have any questions or require assistance, please do not hesitate to contact us either on 0121 630 1130 or email us at info@regalflow.co.uk
Why buy from us