The Pure Hydration antioxidant water alkalizer review

water alkalizer

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The Pure Hydration water alkalizer is a high tech appliance that adds a lot of molecular hydrogen and antioxidants to your water. The way the water ionizer alkalizes water is all natural. It does not use electricity to ionize your water, so you can use it virtually anywhere.

The system has one of the best water filtration systems you can ever find on a water alkalizer. The four stage ultra-filtration system removes all contaminants that are normally found in city water including VOCs.

Below I will outline the benefits of using the unit, the features as well specifications.

How the Pure Hydration water alkalizer works

  • The source water’s first point of entry is the Cation Resin Cartridge where the source water is softened and the taste is improved.
  • The softened water is then channeled into the Carbon and Silver Block cartridge where the water is filtered of micro-contaminants, rust and other microbes except of bacteria and viruses which are filtered in the next filter.
  • The soft and almost pure water is channeled into the Alkaline/Hydrogen Infusing Cartridge. The ionization and alkalization magic happens at this stage. As a result of the ionization, the ORP and Ph. levels increase tremendously. Around 99. 9% of small microbes like viruses and bacteria that would have escaped the Carbon and Silver Block cartridge are removed from the water at this stage.
  • The soft contaminant and microbe free water is then channeled to the last filter. At this stage, the filter eliminates any remaining heavy metals and also neutralizes mercury in the water.

If you are still curious about how a water ionizer works,checkout my well detailed article here

About the Manufacturer

CosanUSA is a USA based water alkalizer manufacturer with a lot of experienced specialists in Eco-friendly advanced purification.

Their warranties are only valid for the original purchaser, so the warranty is not transferable should you decide to resell your water alkalizer to someone else.

They warranty their products for a Lifetime. The lifetime warranty covers manufacturer defects on their water alkalizer.

For the CosanUSA warranty to be valid, you have to register your Pure Hydration water alkalizer within 30 days from the day of purchase.

The business is not listed on Business Consumer Alliance and neither is it listed on Better Business Bureau .So I don’t know much about their reputation yet .

The reason for lack of their presence on these reputation check websites is because it is still a new kid on the block. I will constantly monitor their reputation from now onwards and update it on this post.


  • Sleek design.
  • Flexible installation. If you have enough counter-top space, then you can install it on the top of the counter. If space on top of the counter is not enough to put this unit, then you have an option to install it under the counter. For the under counter configuration, an optional and built in external faucet makes installation process flawless.
  • It has a very limited pH range.The pH range for the water produced by the Pure Hydration water alkalizer is 9.0 to 9.5.
  • It is compact.It measures 36 cm high, 20 cm wide and 36 cm deep. It can sit neatly on the counter-top
  • It has a pretty standard ORP range. The ORP range that can be achieved using this unit is between -450mV to -700mV. The average ORP that this unit operates at is -450 mVs. For those who are new to water ionization, the lower the ORP value the more antioxidants you get. Although it can’t come close to other competitors like MXL-9 and Bawell 2195 with ORPs of up to -850mV, the max ORP of this unit is fairly good though.

For aiding healing of acute conditions like psoriasis and boosting vitality etc., the Pure Hydration water alkalizer is enough. For aiding healing of more serious conditions like cancer that need higher ORPs in the negative side, the machine might not perform that well.

  • The flow rate is 2.1 liters per minute. Although it can’t match the high flow rates of other competitors like the Aqua-Ionizer Deluxe 7.0 and the Life Ionizer MXL-9, it is sufficient for a small household of not more than 4 people.
  • The water alkalizer adds healthy minerals. You will find out that the TDS (total dissolved solids) of the water coming out of Pure Hydration is much higher than the TDS of your source water.
  • Can easily detect any malfunctions on the system. The blue led light on front of unit indicate normal operations.
  • The water alkalizer can alert you when there is need for a filter change. This normally happens on the 180th and 90th day before filter change date. The machine alerts you using the red Led light or an audible voice. This gives you enough time to order the filter and receive it.
  • Changing the filters and accessing the system is quite easy due to its dual side entry.
  • You can connect the unit to the refrigerator provided your fridge supports this. This feature allows you to cool your antioxidant rich water before you take it in, it will taste and feel much better believe me!
  • Performs ultra-filtration. The Pure Hydration water alkalizer machine achieves this by using its 4 stage assorted filters.


Filter #1 is the Cation Resin Cartridge which softens and improves taste of your water.

Filter # 2 is the Carbon & Silver block cartridge which removes microbes and micro particulate contaminants. This particular filter has a lifespan of 6 months.

Filter #3 is the Alkaline/Hydrogen infusing cartridge .The 0.1 to 0.3 micron rated filter eliminates viruses and bacteria out of your water.

Filter #3 is also responsible for increasing the Ph., molecular hydrogen and ORP levels of your water. This filter has a lifespan of 3 months. This filter comes as a pair so as to cover the whole 6 months before replacement.

Filter #4 is the Carbon & Mineral cartridge which is responsible for neutralizing mercury and other heavy metals that might be present in your source water. This particular filter has got a lifespan of 6 months.


  • It measures 14 inches high, eight inches wide and 14 inches deep.
  • The unit weighs 9 pounds or ~4kgs. The shipping weight depends with the seller packaging and other little things. This is the lightest water alkalizer machine I have seen so far. It becomes so handy for regular travelers.


  • You can switch the water alkalizer ON/OFF by simply waving your hand. Infrared is the technology that is used to achieve this.
  • The alkaline water produced by this unit helps your body to heal better and reduce inflammation.
  • The water produced by the Pure Hydration water alkalizer is rich in molecular hydrogen. Molecular hydrogen is known to be a potent antioxidant that reduces the harmful effects of free radicals in your body. Molecular hydrogen rich water has been found by Molecular Hydrogen Foundation to confer anti-aging effects on the human body. So this unit might add a little bit more years to your life.
  • Consuming the alkalized water increases your vitality.
  • Some customers of this unit have reported up to 50% decrease in fibromyalgia pain in just three months of drinking the Pure Hydration water.
  • Although it is yet to be scientifically proven how it happens, a couple of customers have reported significant weight loss with a few months of drinking the ES-4 Cosan Life Water.
  • It is distributed worldwide. Whether you are in the UK or in Africa, you can enjoy pure antioxidant rich water just as other American customers do.
  • It increases the ability of the body to flush out toxins.
  • The unit comes with a 15 day money back guarantee. This gives you enough time to test it out without any worries.
  • This water alkalizer is covered by a lifetime warranty.
  • The water alkalizer increases the body’s ability to absorb nutrients more effectively.
  • The ionization process done by this machine is all natural. Alkalization is done using natural earth elements. The system does not need electricity to work neither does it waste water during the ionization process.
  • The water alkalizer does not remove the healthy minerals like calcium and magnesium .Calcium and magnesium are very good for the development of healthy bones. Calcium is also very good for preventing osteoporosis,which is a condition that increases the fragility of bones.
  • The water tastes so fresh and natural. Most customers liken the ES-4 Cosan Life Water to mountain spring water.
  • It is very easy to transport. The retractable spout on this unit can be tucked away if you want travel with the water alkalizer. So if you are a regular traveler who does not need to part with antioxidant rich water, then this should be the best water alkalizer.
  • Removes 99.9% of the 200+ water contaminants. The unit achieves this by using its 0.02 micron filters.
  • Experience improvements in your digestive system and processes
  • One of the most important benefits of the ES-4 Cosan Water that comes out of this unit is its ability to aid in the detoxification of the body at the cellular level.
  • It is difficult to ignore the vast health benefits conferred to your kidney by the alkalized water.


  • The machine can only alkalize your water; it does not produce acidic water which is useful for other purposes like cleaning.
  • The limited PH range limits the uses of water produced by the water alkalizer. The range is 9.0 to 9.5.Take note that the conditions of source water determine the pH of the water produced by the unit.
  • The unit has only one alkaline setting. The PH range cannot be adjusted to suit your needs as what other water ionizers do.
  • The unit has 4 filters. Replacing all the 4 filters every six months or so might be expensive. Most water ionizers have 1 or 2 filters which are replaced every 12 months or so. The reason why the filters on this particular water alkalizer need to be replaced more often than those of other competitors is because the Pure Hydration machine performs ultra-filtration which is way more advanced than the rest of the competition.


  • Just like any other counter-top water alkalizer, the installation process is very easy. The manufacturer provides all the necessary installation equipment or parts for either counter top or under counter configuration. It’s rare to get free parts for under counter installation from other manufacturers.
  • The under counter installation is a little bit trickier than the counter-top installation. If you feel that you might not complete this type of installation successfully, it is highly recommended to engage a plumber or an expert.
  • Read he easy understand installation guides provided with the purchase. The manual should be enough to set up your water alkalizer machine in less than 1 hour.

Maintenance of Pure Hydration water alkalizer

  • The LED screen reminder on the water alkalizer will notify you when there is need for filter changes.
  • The filter should be changed every 6 months or when the counter hits 2300 liters, whichever comes first.
  • Whenever you run into issues with the unit, just call the friendly and professional customer support team.
  • Make sure you don’t close the spout all the way as this might lead to a build-up of pressure in the water line.

Final verdict

If you don’t mind the relatively higher cost of replacing the 4 filters every six months, the Pure Hydration water alkalizer is awesome.

What i like the most about the ionizer machine is that it is cheaper to buy that the rest of the competition. The cheaper price doesn’t compromise much on the potential health benefits that you can get from using the unit.

The ultra-filtration is absolutely the best so far .Most competitors concentrate more on ionization without paying equal attention to the level of filtration as well. Most competitors have got either 1 or 2 filters only.

The 4 stage filter system that comes with the Pure Hydration water alkalizer machine is superb; no competitor can even come closer.

What I don’t like about the unit is that it does not give you an opportunity to adjust the alkalinity and the ORP levels of the water that comes out of the system. This limits the range of uses of the ES-4 Cosan Life Water. The water is more useful for drinking, brewing tea and cooking.

The water that comes out of the system might not be all that useful for cleaning purposes as the water alkalizer only produce water with ph. 9.0 to 9.5.Cleaning requires water which is acidic and not alkaline.

I give this water alkalizer an overall rating of 4.7/5

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If you are still looking forward to compare this unit with other water alkalizer machines ,checkout the Aqua-Ionizer Deluxe 7.0