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Aquasana AQ-RO-3 Under Sink Reverse Osmosis Water Filter System in Polished Chrome

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Free UK Next Working Day Delivery
Free UK Next Working Day Delivery

Product Description


The Aquasana OptimH2O uses reverse osmosis and Claryum filtration technology to maximise your health benefits and hydration and is the only proven water filtration method to effectively remove fluoride. It is the first system of its kind and has remineralisation so you don’t miss out on any natural goodness.

You can see the performance sheet here

The Aquasana OptimH2O filtration system reduces the content of 74 contaminants including fluoride and mercury by 95%, chlorine and arsenic by 97% and lead and asbestos by 99%. In total, it filters five times more contaminants than other filters. Minerals such as calcium, magnesium, and potassium are put back into the water, so you don’t loose any health benefits.


The filter works in several steps. Firstly the reverse osmosis filters out dissolved solids smaller than one micron, then activated carbon reduces the organic chemical contents including herbicides, pesticides, VOCs and MTBEs. Catalytic carbon removes chlorine and chlorine + ammonia disinfectants whilst the ion exchange filters out heavy metals such as lead and mercury. Finally, the absolute sub-micron filtration removes asbestos and chlorine resistant cysts before beneficial minerals are added back into your water.


When it comes to replacing your filters, it's never been easier. Simply twist and pull. You don't even need a plumber! You might think that all this filtration slows down the water flow, but you'd be wrong. In fact, the Aquasana OptimH2O has a flow rate of 0.8gpm.

Installation Video

How Often Do You Need To Replace Filters?

1 Year RO Membrane Life
1 Year Remineralizer Life
6 Month Carbon / Claryum Filter Life

So, if you're looking for a convenient way to obtain healthy drinking water, then the Aquasana OptimH2O is your answer. It has even been tested and certified to NSF/ANSI Standards 42, 53, and 58.


  • NSF/ANSI tested and certified
  • Flow rate of 0.8gpm
  • Reduces the content of 74 contaminants
  • Reduces fluoride and mercury by 95%
  • Reduces chlorine and arsenic by 97%
  • Reduces lead and asbestos by 99%
  • Five types of filtration systems including
    • Reverse osmosis
    • Activated carbon
    • Catalytic carbon
    • Ion exchange
    • Absolute sub-micron filtration

Additional Information

Technical Specifications

  • Can Produce Up to 13 Gallons of Water
  • Operating Pressure: 40-100 psi
  • Operating Temperature: 4°C to 37°C
  • Manifold Dimensions: 30.5cm x 11.5cm x 32cm
  • Tank Dimensions: 41cm (h) x 28cm (w)