Water Ionizer Vs. Reverse Osmosis: Which is Better For Safe Water?

Are you looking for the best and safe water purifying technique for your water? Sure! You're doing the right thing! Your life is very important, likewise that of your family.

Many companies that produce water purifying devices claim that theirs is the best. But there is no one-stop-do-it- all when it comes to a water purifying device!  

This article looks into reverse osmosis as against water ionizer technique to know the best for your drinking water. This article is focused on numerous reviews on the two techniques of water purification. Finally, the better of the two will be selected. Tag along for more details!

What is a water ionizer?

A water ionizer is an electrical appliance! It utilizes an electrolytic process to alter the nature of water to form an ionized alkaline. This alkaline is antioxidant-rich.

It’s also rich in the oxidizing ionized stream of water that is acidic too. The ionization of water leads to the formation of a full concentration of acidic or alkaline minerals. This means separating the hydrogen content of water and its oxygen content.

The alkaline water offers an electron-rich and antioxidant medium for consumption. Conversely, the acidic water offers oxidizing liquid water serving as a cleanser and antibacterial for outside use.

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What is reverse osmosis or RO?

Conversely, RO refers to another purification process of water. It uses the partially or semi-permeable membrane to wipe off unwanted molecules, ions as well as larger atoms from water.

This will make your water suitable for drinking. Application of pressure overcomes osmotic pressure, which is the colligative property driven through the solvents chemical (Pd)-potential differences, the thermodynamic parameter! 

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Techniques of reverse osmosis

Reverse Osmosis-RO wipes off all mineral constituents, leaving dead water. It relieves your water from suspended, broken down chemicals, and biological species like bacteria. RO is useful in industrial processing companies. Some manufacturing firms engaging in potable water use it too.

You can use this technique to retain solutes at the membrane section under pressure. And, secondly, you can allow the pure solvent to move to another surface. 

In the real osmosis procedure, solvents logically move from a region of lower solute concentration. However, when an external pressure in reversing the normal movement of an unpolluted solvent, it is reverse osmosis! 

How water ionizer came into the picture

Water ionizer came via scientific findings. They saw isolated regional people living longer. The place was harsh, yet people had good health due to glaciers in their water via a valley. The scientist deduced how to re-organize, re-energize electrically, and re-structure water as nature does.

It brought about water ionizer, which produces alkaline water. Via electrical division of poorly drinkable tap water to alkaline and acidic water tap water is purified. 1950 marks the first water ionizer in Japan. Tests were carried out on animals and plants.

In 1954, development and achievement by Japanese in Agricultural Universities, examined the impact of ionized water, especially acid water.

Comparing the two techniques of Reverse Osmosis And Water Ionizer

In comparing the two, you should consider their; uses, pros, cons, level of purity, mineral contents, level of waste, and process involved.


Uses of reverse osmosis water are as follows;

  • RO water is good for drinking
  • You can use RO water for mopping the floor.
  • The rejected water from the RO Purifying process is for cleaning: Utensils, watering of Garden, Car Cleaning as well as Air Coolers.


Ionized water uses

  • The water ionizer produces alkaline water through electrically dividing poorly cleaned tap water to acidic water and alkaline water. 
  • It concentrates the alkaline minerals, which are health-giving such as; calcium and magnesium, after removing every harmful contaminant. 
  • The alkaline water, via this process, aids in counteract acid or alkaline imbalance. The products from this process are all useful today. 
  • Acid water is used now by farmers supplying cut flowers in retaining the freshness of flowers till delivery periods.
  • Although, when it was tried on the human body, the result did not give a consistent result. Several experiments by Japan medical practitioners proved that the alkaline water is not toxic. 
  • And it could relieve many adult diseases via sugar pill impact. 

From the comparison of the uses of the two techniques of purifying water, one can see the numerous uses to which water ionizer could be put. Although reverse osmosis water is of some use, it cannot be compared with that from a water ionizer.


The pros of reverse osmosis

  • Reverse osmosis utilizes a semi-permeable membrane, which has very tiny openings that let water flow. 
  • It does not allow impurities in the water. 
  • Reserve osmosis removes lead, radium, asbestos, dead metals, and dissolved organics.
  • It is not harmful to the body.

The pros of water ionizer

  • The alkaline water is highly antioxidant-rich. 
  • Also, its acid-water product is an oxidant. 
  • The antioxidant benefit is impressive to the human body.


The cons of reverse osmosis

  • Reverse osmosis purified water is devoid of some minerals.
  • It is devoid of minerals like that are vital to one's cellular metabolism, vitality, and growth.
  • Reverse osmosis process wastes up to 4 gallons of water
  • The membrane may rupture, smash, or deteriorate. 
  • It needs constant change.
  • Bad taste sometimes due to system malfunctioning
  • RO eliminates minerals that are with larger molecules than that of water
  • Also, it removes the minerals in water that could be harmful to health. 
  • The pH of RO is slightly acidic at the 5-6 level. 
  • Plain Reverse Osmosis wastewater having high TDS stains.
  • It may leave particles of salt on the floorings. 

The cons of water ionizer

  • The water is not very pure
  • The acidic water is not for drinking. 
  • Water ionizers need impurities in water for proper functioning.

The functionality of water ionizer

It has a straightforward process, as follows:

Water flows via the 'In" tube at the back of your ionizer. It runs through an in-built filtering device as soon as it is there. It'll wipe off divers contaminants.

The durability of the filter is a year, and its costs are nearly high when compared to the water quality.  Water ionizers need some impurities present in water for proper functioning.

The ionizer passes through electrolysis, where its water runs through positive as well as negative electrodes. This is over the ionizer 'plates" that have a low voltage current running through it, causing soluble minerals, heavy metals with other impurities to move to either positive 'pole' or negative 'pole.' 

This is according to its electrical energy sign to separate water into an acidic and alkaline stream. The alkaline water is good for drinking while the acidic water is externally used for skin, plants, and disinfectants.

Acidic and Alkaline water forms via ionization of the electrodes by splitting water into H+ -acidic water, and OH- alkaline water. This offers great antioxidant content within alkaline water, and for micro-clustering of water. Finally, the water filtration was for cosmetic reasons, such as odor and taste.

Benefits and features of utilizing an alkaline ionizer:

  • They are highly rich antioxidants, which is quite amazing. Now, competing technologies offer nearly 90% purified water, like Reverse Osmosis, but now they offer alkaline après filter for good taste. 
  • The tiny electric charge which makes it ionized and electrolyzed makes alkaline water an antioxidant, while the acidic water is an oxidant
  • The ORP scores are shows that water ionizer produces better antecedents than reverse osmosis as below; Tap water +300, bottled water +350, reverse osmosis water +200, distilled water +200
  • and soda +400. And within the vital side, alkaline ionized water is -350, juice (cranberry) -120, tea (green) -180, and juice (orange) -50.
  • A water ionizer produces more antioxidant than other drinks, championed as the best antioxidant content! To get big antioxidants via a cup of water is amazing.
  • Perfect pH ranges from 7-8, and alkalinity is vital in diet, and in water, it should be 7-8. Utilizing water ionizer gives you that. Even the high-quality rated reverse osmosis process gives perfect pH 7-8 too.
  • The pH from pH 3-pH 12 with alkaline ionizer gets to pH 9.5 in water. However, since water ionizer functions via dividing H+ and OH- ions, one can choose the specific pH for you, from as less as pH 3- pH 12. 
  • The high and low PH water via ionizer is a high-classed antibacterial. 
  • It's chemically free for household use at (ph 3-4). 
  • It serves as a makeup remover at (pH 4-5) and a hand sanitizer at (pH 3-4). You can use it as an antiseptic as well as antibacterial mouthwash at (pH 3-4). 
  • Many use it as anti-acne, psoriasis, and eczema (pH 3-4). 
  • It can be utilized as an exfoliator, cleanser, and pet smell eliminator (pH 4-5). 
  • Finally, it adds additional antioxidants to vegetables and fruits at (pH 11+).

Reverse osmosis is the best for drinking water

Notwithstanding the numerous uses of products from water ionizers, we can't say it is the best. Putting different things into the water like lemon, salt, minerals, etc., together with other cheap techniques for dropping a pH level is poor.

You're skipping the filtration step, which is vital. Taking the bull by the horn, we can't hide the fact that tap water isn't very neat!  Tap water sometimes causes us harm! Water Ionizers are poor in filtering water!

Although the pH level of blood operates at 7.4, and alkaline water has no effect on human blood pH, possible harm may arise from it. For instance, sodium hypochlorite, which is found in bleaches, is formed. A harmful product to health comes from this process too.

Furthermore, reverse osmosis may have leakages of impurities, but they are not as harmful as chlorine. Finally, if you want as much water as pure, ionizers will not be a perfect way. This is because they are costly, while the reverse osmosis technique is not.


If you want to live longer, take note! The ionizers are incapable of eradicating several pollutants like; Pharmaceuticals as well as other new world pollutants. Unlike reverse osmosis systems, water ionizers do not remove soluble minerals.

Therefore it is not giving you pure water! The EPA recommendation of 0-50 TDS-Total Dissolved Solids, as the best drinking water, can't be achieved through water ionizers.

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