Osmio Zero Reverse Osmosis System

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Smart and highly efficient reverse osmosis water filter and kettle that will produce high quality water with no installation and super easy user maintenance. Osmio's latest compact, portable and countertop reverse osmosis water filter, the world's first revolutionary, installation-free household Reverse Osmosis (RO) countertop water purifier which also serves to provide, ambient, hot, and boiling hot water at your fingertips with great ease of use and easy maintenance. A filter kettle like no other portable purification system. The most efficient RO system on the planet!  If you live in a hard water area then you may need to change the carbon block and membrane more frequently than every 6 months.

If you are living in a very high-rise building with multiple cold water storage tanks the system might not be suitable for you as the filters may block up after only a few weeks of use. This is due to an elevated level of non dissolved solids - which is what causes the filters to block prematurely.

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Osmio Zero Reverse Osmosis System - Smart and highly efficient reverse osmosis water filter and kettle that will produce high-quality water with no installation and super easy user maintenance.

Highly recommended for households or workplaces with 4 people or less. By not being installed, the Osmio Zero is the most hygienic reverse osmosis system because it is not connected to a smell drain.  

Available in BLACK and WHITE, use the selecting above to choose your color. The black finish is a painted finish and needs to be handled with care. Use only a damp cloth to clean it. It also can chip on impact - so care needs to be taken when operating the unit. 

Water Temperatures

The system can provide the following osmotic level water with organic calcium and magnesium active ceramic:

Normal temperature water (approx. 25 ° C), ideal for direct drinking
Warm water (40 ° C - 50 ° C) ideal for lukewarm water
Hot water (80 ° C - 88 ° C) ideal for coffee
Nearly boiling water (90 ° C - 98 ° C) ideal for tea - PLEASE NOTE - the system reaches 100% but then travels through the route to the dispenser and loses some degrees. By using a thermometer at the very top where the water comes out, you will measure around 92- 95°C. A great tip for hotter dispensing is to first select 100°C Setting, and let the water get hot, and make your mug hot. Then press stop and empty that out, then go again with a new 100°C press and the results are much better.

Disclaimer: Information on temperatures is for guidance only. Please follow the preparation method stated on the packaging or given by your midwife when preparing baby formulas or any other solutions.

Portable water filter, countertop water dispenser, best kettle ever!

✓ The only pure water kettle on the market and 80% more energy-efficient than a regular kettle!

✓ Simply plug and play! No need for any installation! So easy!

✓ Thousands of times purer than traditional gravity filters or jug filters. The most efficient RO in the world, only 1 litre of waste for every 5 litres of water!

✓ Replaces your kettle by also producing reverse osmosis quality water, ambient, warm, hot or boiling at your fingertips!

✓ Filters cold water and has a boiler for dispensing instant nearly boiling water

✓ Very compact and can be put anywhere

✓ Uses flow monitoring to detect filter life and alarm, plus fail safe built in to never dispense bad water.

✓Customers from Ireland, Austria, Belgium, Czech Republic, Denmark, France, Germany, Netherlands, Luxemburg, Slovakia, Slovenia, Spain, Italy, and Hungary, can also take advantage of the above warranty terms but they must send their system back to us to do this (no free returns) and we will cover the cost of shipping back out.

How to recycle and dispose of Osmio Zero water filters 

Quick-Change activated carbon filter and Quick-Change membrane 50GPD filter: these two filters can be placed in plastics recycling. However, the bottom of the filters will first need to be cut open using a hacksaw. The carbon and membrane elements can then be removed and thrown into the bin before placing the filters in recycling.

Quick-Change Sediment filter: This can simply be placed into the plastics recycling.

Quick-Change Insertion filter: This filter should again be cut in half and the contents emptied out into the bin before recycling the plastic exterior.

Best kettle water filter 2019

Best Kettle, Best Water Filter - The Osmio Zero

It's just so good! There is nothing else like this on the market. It solves the cost and time of installation and you can take it anywhere and have it in any room. It's really easy to fill up the water, you just take out the tank, fill it and pop it back in. The unit is completely stand-alone with no connection to the drain.

It makes the perfect choice anyone who wants the convenience of a top of range purification system with no installation and also for single people, students or small families, people who regularly travel and who are currently renting their property and cannot have a system installed on tap.

The unit is incredibly easy to use and assemble. Simply take it out the box, plug it in and fill the supply pitcher. Place it back into the system and turn the dial to adjust the temperature and press to dispense and stop, that's it! Within minutes you will have reverse osmosis quality water, ambient, warm, hot or boiling at your fingertips!


3-year free repair warranty for customers in the UK (free returns)*. 

Customers within the Northern Ireland, Republic of Ireland as well as the following EU coutries: Austria, Belgium, Czech republic, Denmark, France, Germany, Netherlands, Luxemburg, Slovakia, Slovenia, Spain, Italy, and Hungary can also take advantage of this service but they are required to ship the system to us (no free returns). 

We also offer repairs after 3 years for a small cost.

*Please see section 7 in the manual for warranty terms.

There is optional 5 years extended warranty available. 

Please note: There is potential for the Osmio Zero to drip and for there to be a small amount of water underneath the system. This can be worse if the supply tank is allowed to get very dirty and with limescale buildup. So if you have a wooden, untreated worktop, it is recommended to put the system on a tray to avoid damaging the worktop. If you have a laminate or granite worktop this would of course not be a significant problem. It is recommended to clean the supply tank periodically and descale it, plus use a cloth to soak up and water that comes out from the tank connection at the base during supply tank refills. 

Filter change frequency

Filter life directly depends on the quality of incoming water. It is mostly affected by hardness, however other impurities can also cause premature blockage.  You most likely will need a mid-term change of Carbon Block and Membrane filters if you have a hardness level of around 200 + Calcium Carbonate. The unit is designed to shut off if there is a blockage in the membrane or prefilters. As the system recirculates the rejected water from the membrane, the TDS level continually rises of the water entering the membrane filter. Therefore, for those with water of higher TDS, more frequent carbon block and membrane changes are likely. It is recommended to have at least a spare carbon filter and membrane on hand with the unit at all times.  

The first thing to note is that the system is amazingly easy to use and maintain and as Osmio, we have spent great investment into the product and our culture is customer care. We are passionate about our products.

The system is designed with ease and practicality in mind. The unit has a very simple user interface. Water comes with the turn of a dial and there is no complicated user manual needed. The system is fully portable and just needs to be plugged into a power supply. It does not need to be installed into household plumbing. Any water source gives you easy access to fresh and healthy RO pure water at any time.

Changing the filters is really quick and easy. They come off and go back on with a simple twist function.

The colour coded LED instantly shows when the filtration has completed. The intelligent, automatic, power-saving motor design, gives instant supply of filtered water, and automatically shuts off when filtration is complete.

An ideal investment for small households! There is just the need to plug it into a normal power supply. Only a power connection via a simple plug socket - done!
The system has an automatic shutdown mode, after 1h the device switches off automatically, so you save power!

Filter Stages

1 - Quick-Change Sediment Filter 5μm: removes coarse particles, e.g. Sand, rust, chlorine, lime
2 - Quick-Change activated carbon filter: removes chlorine and organic impurities
3 - Quick-Change Membrane 50GPD: removes all pollutants and flavours to almost 100%
4 - Quick-Change Insertion Filters: Hygiene After-filter antibacterial calcium and magnesium bioceramics, adding a small 10-20 ppm of minerals.

Osmio Zero is BPA Free Certified at All 4 Temperature Settings

Featured Review

Review by Dave Corbey - Coffee Equipment Reviews - "I’ve been using the system for over 2 weeks now and I have to say I really like it, a lot. It’s saved me time and space both above and below the counter. It makes life so much easier and everyone ion the family loves it. On the cost front, sure there is a larger outlay initially, but doing the math it actually works out cost neutral (family of 4). Based on being on a water meter and the fact that under counter systems need end of life replacement and filters over time. I truly believe it doesn’t actually cost more to be greener and you get a heap of convenience thrown in. If you are not on a water meter then sure it’s going to cost more than an under counter system but if you can afford it…why not save all that clean water from going down the drain. For bottled water users, it’s going to save a lot of money and definitely help the environment in terms of plastic waste and the carbon used to produce and transport the water to the supermarket, only for you to transport it again. If you can afford an expensive coffee machine, then you really need to use great water and the little Osmio Zero gives great water!"

More Information
ModelOsmio Zero Reverse Osmosis System
In DepthOsmio's latest compact, portable and countertop reverse osmosis water filter - Osmio Counter Top Water Dispenser


Weight & Dimensions:

Height: 38 cm
Width: 18 cm
Depth: 41 cm (approx 50 cm including drip tray)
7kg weight

Maximum Bottle Height with Tray in position: 22cm
Maximum Bottle Height without Tray in position: 24cm


Up to 190 litres daily (at 20 ° C water temperature)
Flow Rate: 7.8 Litres Per Hour (at 20 ° C water temperature)
Capacity Water tank capacity: 5 litres to fill
Capacity Osmosis water tank: 1.5 litres approximately - 8-20 minutes to refill (depending on how blocked the carbon and membrane filters are)

Feed water requirements:

Temperature 4 - 40 oC
pH 6.5 - 8.5
Turbidity < 3 NTU
TDS < 270 PPM
Hardness < 250 PPM CaCO3
Chloride < 250 PPM
Free Chlorine < 0.7 PPM
Iron < 0.1 PPM
Manganese < 0.1 PPM
Silica < 0.1 PPM
Chemical Oxygen Demand < 5 PPM O2
Total Bacteria Count < 50 CFU / mL
E. Coli < 3 CFU

Power connection required: DC 220-240V, 50Hz
Power Rating: 2200W - 2600W
Nominal heating power 2180W - 2580W
The osmosis system consumes in standby only under 0.5 watts thanks to the ERP2 power supply
With booster pump DC 24V and water pump
Including flush valve
Integrated automatic shut-off: As soon as the storage tank is filled, the water production stops.
Power cable length approx 138 cm
Normal wear and tear. We suggest the system should be replaced after 5 years.

Filter changes:

Filter changes recommended by the manufacturer: every 6 months
Quick-Change filter: filter changes are very easy!
Filter ParameterBacteria, E-coli, Chlorine, Sediments, Nitrates, Fluoride, Limescale, Dissolved Solids (TDS), Hormones, Pharmaceuticals, Heavy Metals
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Product Questions

Does it remineralise the water and is the water acidic?
Question by: nextlev on 29 Dec 2018, 13:31
Great question, thank you. The final filter in the system contains calcium and magnesium active ceramic balls. They have the effect of adding around 20-30 ppm in total to remineralise the water. Reverse osmosis as a process does not affect the pH (hydrogen ion), however because of the purity of the water CO2 is dissolved from contact with the air as soon as the water is purified which forms carbonic acid. You can observe using a digital pH meter the pH slowly falling as a glass is left standing over a few minutes. The remineralisation ionises the water to counteract the carbonic acid, however the resulting pH entirely depends on the level of CO2 in the water as well as in the air (so depending on how long the glass is left out). When you drink the water, as soon as this reaches your stomach, containing hydrochloric acid of pH 2.0, whatever the pH of the water you drink, it becomes acidic straight away, we focus on the purity, the alkalinity (not measured by pH but by the mg/l of mineral content). We also recommend to use this water from our machine with the Osmio Hydrogen Water Bottle to free hydrogen around 1-1.5 mg/l in order to further enhance the health benefits of drinking water. Please do give us a call if you would like any further advice.
Answer by: Mark Kent on 29 Dec 2018, 13:31
Is the calcium/magnesium remineralisation filter compulsory, or will the system work without it inserted?
Question by: Sue J on 1 May 2021, 16:39
you can replace the post filter with an empty one from the sanitization kit.
Answer by: Irina Orlenko on 21 May 2021, 18:28
Maybe a silly question but where does the rejected water go?

Question by: Niall on 26 Jul 2021, 15:54
rejected water goes into the supply pitcher and being recirculated.
Answer by: Irina Orlenko on 16 Aug 2021, 17:16
My tap water is 118ppm TDS and water out of the osmio is 20ppm TDS.
At what level of TDS would you recommend I change the filters?
Question by: Tony Exley on 30 Jul 2021, 13:53
We would recommend filters changes every 6 months in your circumstances, they are unlikely to be blocked prematurely
Answer by: Irina Orlenko on 16 Aug 2021, 17:26
The tap water from my home uses a water softener system. Would this be appropriate to use with this filter?
Question by: Carlos Saavedra on 5 Aug 2021, 16:26
Yes, you can feed softened water into Osmio Zero
Answer by: Irina Orlenko on 16 Aug 2021, 17:27