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13-Plate Under-Sink Water Ionizer — Delphi H2
Starting at$4,295.00
Up to 2.0 ppm H2Healthiest H₂
Shop NowAlkaline Water Ionizers
The Easiest To Own, Best Value in Premium Water Ionizers With The Longest-Lasting Performance For The Cleanest, Healthiest Water, That’s Proven, Not Promised.
4.988 customer product reviewsGoogleTop Quality Store
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Smart Payments
that don’t ding your credit or wallet.
Learn more about Financing Options0% Interest
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90-Day In-Home Trial
Experience pure wellness risk-free.
Learn more about 90-Day TrialYour 90 day in-home trial starts on the day your ionizer arrives.
If you don’t love the water, your refund is easy!
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Fast, Free Shipping
Your ionizer will be tested and signed off by our technicians, packed and shipped same day*.
Learn more about Our ShippingAlways fast. Always free. Shipping is on us to ensure you get started quickly.
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#1 Rated Warranty and Service
We have the lowest warranty rate in the industry. If anything goes wrong, you get prompt, industry-best service.
Learn more about Our WarrantyAlong with the most durable ionizers you get industry-best service from our support staff.
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White Glove Service since 2003
Founded in 2003, we are the oldest USA importer. We trained many of our competitors including Tyent and Life Ionizers!
Learn more about Our CertificationsTrust our A+ BBB rating, CE, ISO and certified testing.
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Veteran Owned and Operated.
From 1980 through 1986, Jay Hare proudly served in the United States Navy
Learn more about Our StoryWas stationed aboard the USS Ranger.
Alkaline Water Ionizers
Compare every AlkaViva countertop and undersink ionizer in one place.
4.988 customer product reviewsNot sure which ionizer is right for you?
6 ionizers match your selections
13-Plate Countertop Water Ionizer — Athena 13
Starting at$3,995.00
Up to 2.0 ppm H2Healthiest H₂
Shop Now
9-Plate Under-Sink Water Ionizer — Delphi H2
Starting at$3,494.99
Up to 1.0 ppm H2Healthier H₂
Shop Now
Real People. Real Results.
See how AlkaViva customers use their ionizers every day.
Susie C.
Verified
Hi, I'm Susie. I have been drinking ultra water for over 18 years, and I can't begin to tell you the benefits. It's really helped me out a lot in regards to my inflammation that I used to have in my hands. So I do have, you know, arthritis that's not apparent anymore. And then also what it's done for my skin, my energy level, my hair. It's just been tremendous. And there's all kinds of different uses that you can have, you know, with the acidic water, not as well, just not the alkaline water. And also, too, do not forget about your critters, because your critters also benefit from the water, and it helps promote longevity of their, their lives, too. So we want to try to spend as much time as we can with them. All right. Thank you. Give us a try.
VerifiedFranny M.
Verified
Hi, I'm Frannie Welter, and I've owned an Alkaviva water ionizer for over 15 years. Started off with the Athena and just switched over to the amazing Delphi model, which also hydrogenates the water. So many health benefits. But let me just show you this beautiful unit right here. I've worked up to an alkaline three. Absolutely beautiful. To learn more about all the benefits of purifying and alkalizing your body with this water, check out Alkaviva Caddy.
Mary E
Verified
Over 20 years ago, while living on the east coast, I contracted Lyme disease and began to suffer with brain fog, headaches, inflammation, and joint pain. Because the disease was so misunderstood at the time, it often went misdiagnosed and mistreated. Fortunately for me, I was able to find a naturalistic doctor who properly diagnosed my symptoms as Lyme's disease, and she helped me to make some lifestyle changes that really, really made a difference in how I felt. One of the things that I was able to add to my life was a water ionizer from alkaviva. It produces alkaline ionized hydrogen water, which has the ability to greatly reduce the symptoms from which I was suffering. So if you are on the fence about buying one of these machines, put the thing in your cart, hit the buy button and go for it. You won't regret it, I promise.
Verified product feedback
H2 Water Ionizer Reviews
Vesta H2
Best water system ever we love it so much
WOW. 3 in 1
It's a privilege to drink alkaline water and use the acidic side for many different purposes. Having Hydrogen added on to it now, it's unique. Having used the previous model for over 10 years, this model is easier, and more potent. Thank you for continuing to improve the lives of many people.
Love it
Just had a well drilled and love the new water in our new machine
Great Water System!
Enjoying our new water ionizer! Great tasting water and seeing benefits already with acid reflux
Excellent
Loving it so far. Easy install, and simple to run. We’re on catchment water on Big Island of Hawaii, and it tends to be a bit acidic out of the faucet. The water coming out of the Delphi definitely tests alkaline, up to 9. 3 on setting 5.
Delphi water Ionizer
Good purified water
Compare models
How do AlkaViva water ionizers compare?
Compare H2 performance, plate count, installation, and live price.| Compare | Delphi H2 Undersink 13-Plate | Athena 13 H2 Countertop | Delphi H2 Undersink 9-Plate | Athena 9 H2 Countertop | Athena 7 H2 Countertop | Athena 5 H2 Countertop |
|---|---|---|---|---|---|---|
| InstallationHow it fits your kitchen | Undersink | Countertop | Undersink | Countertop | Countertop | Countertop |
| H2 performanceHydrogen concentration | Up to 2.0 ppmHealthiest H₂ | Up to 2.0 ppmHealthiest H₂ | Up to 1.0 ppmHealthier H₂ | Up to 1.0 ppmHealthier H₂ | Up to 0.6 ppmHealthy H₂ | Up to 0.6 ppmHealthy H₂ |
| Plate countPower and pH range | 13 platesFlagship | 13 platesFlagship | 9 platesMost popular | 9 platesMost popular | 7 platesEveryday | 5 platesCompact |
| Current priceLive store pricing | $4,295.00 | $3,995.00 | $3,494.99 | $3,194.99 | $2,594.99 | $1,794.99 |
| Product links | Shop Now | Shop Now | Shop Now | Shop Now | Shop Now | Shop Now |
Real People. Real Results.
Join thousands of families, athletes and health and wellness enthusiasts who made UltraWater part of their daily health routine.
Based on 2,500+ reviews 
Find your fit
Find your fitThe Best Alkaline Water Ionizers For Every Lifestyle
No two wellness journeys are the same. Discover the water system designed for yours.
Wellness
WellnessBest if You’re Concerned About Tap Water Contaminants
Worried about PFAS, glyphosate, chlorine, lead? The ONLY ionizer filter tested in EPA/NELAP certified labs against 249 contaminants.
Active Life
Active LifeBest if You Want to Improve Your Overall Health
Over 3,000 peer-reviewed studies back up health benefits of H2 in over 200 health conditions. Optimize your health and wellness!
Longevity
LongevityEasiest to Install & Use. Healthy Aging Easy.
One-touch operation. Easy to understand display. Automatic cleaning. No maintenance. All with seven proven healthy-aging benefits.
Digestive Wellness
Digestive WellnessBest if You Want Better Digestive Health
Studies show alkaline water with it’s available carbonate and bicarbonate create a mineral-buffer that eases digestive issues.
Performance
PerformanceAthletes & Recovery
H2 is one of the most studied topics in exercise research, with published studies exploring endurance, performance & recovery.
Joint Pain
Joint PainBest if You Want Relief From Joint Pain
H2 targets and eases the root causes of aches and pains — chronic inflammation, oxidative stress, and lactic acid.
Alkaline Water Ionizers guide
Alkaline Water Ionizers questions
Guidance for comparing installation styles, plate counts, and hydrogen performance.
Should I choose a countertop or undersink water ionizer?
Choose a countertop model for straightforward faucet-diverter installation and easier portability. Choose an undersink model when you want the main unit hidden inside the cabinet with only a dedicated faucet visible above the counter.
What does plate count mean in a water ionizer?
Plate count is one factor in an ionizer’s electrolysis capacity and hydrogen performance. AlkaViva models range from compact 5-plate systems to flagship 13-plate systems; compare the published H₂ output and installation style rather than using plate count alone.
How do I choose the right AlkaViva ionizer for my home?
Start with installation style, then compare hydrogen output, plate count, available counter or cabinet space, and live price. The guided selector and comparison chart above narrow the collection using those same factors.
Is alkaline ionized water proven to treat health conditions?
A water ionizer should not be presented as diagnosing, treating, curing, or preventing a medical condition. Evaluate a model based on documented filtration, hydrogen output, installation fit, maintenance, warranty, and support rather than disease-treatment claims. Ask a qualified clinician about individual health concerns.
Are pH and dissolved hydrogen the same thing?
No. pH describes how acidic or alkaline the water is, while dissolved H₂ measures molecular hydrogen in the water. A higher pH does not automatically mean a higher hydrogen concentration, so compare the published H₂ performance separately from the pH settings.
Can I use a water ionizer if my home has hard water?
Yes, but source-water hardness affects scaling and can influence output. Homes with hard water may need more frequent cleaning or suitable pretreatment. Review your water quality and the model’s installation guidance before choosing a setup.
How often do water-ionizer filters need to be replaced?
Replacement timing depends on the model, water quality, and usage volume. Follow the filter-life indicator and owner’s manual rather than a universal calendar date, and replace filters promptly if flow or water quality changes.