AlkaViva Delphi Undersink Water Ionizer • (2024 Review)

Last updated Feb 15, 2024

Disclosure: As an Amazon Associate I earn from qualifying purchases.

Today’s review is an exciting one. After reviewing all of AlkaViva’s countertop ionizers, I’m bringing you my in-depth Delphi undersink water ionizer review.

The Delphi ionizer is AlkaViva’s most premium model and like the other ionizers in AlkaViva’s H2 lineup, it comes with molecular hydrogen infusion.

By the end of my review, you’ll know for sure if the Delphi is perfect for you. Is it in the same class as Tyent’s UCE-11 or Life Ionizers’ MXL-15? You’ll also find out if it’s better than Enagic’s Kangen Water machines.

First, let’s go over the Delphi ionizer’s features.


  • 9 platinum-coated titanium electrode plates (made in Japan with the help of Korean engineering)
  • H2 Infusion Technology adds molecular hydrogen to your alkaline ionized drinking water for a massive anti-aging antioxidant boost in every glass of water you drink
  • AlkaViva’s UltraWater™ dual filtration system has been third-party tested to virtually eliminate 172 known water contaminants
  • 8 different water settings (5 alkaline settings, 2 acidic, and 1 neutral)
  • Filter replacement indicator (filter life is 1000 gallons)
  • NSF-certified BPA free materials ensure your water never touches nasty plastic chemicals found in inferior ionizers
  • One-touch controls at the AlkaViva faucet (you won’t need to go under your sink to adjust water settings, do it right from the Delphi’s faucet)
  • AutoAdjust power supply and RISC circuitry keep your ionizer running smoothly and prolong its life, plus you save money on your electric bill
  • AlkaViva’s DARC II self-cleaning system means you never have to take your ionizer apart to clean it, the Delphi cleans itself
  • Max Negative ORP: -700 mV
  • Max pH: 10.0+
  • Flow rate: 1.5 – 3.5 liters per minute
  • Available in 120V and 220V
  • Spout Dimensions: 9.375″ Height x 5.5″ Length
  • Lifetime warranty on parts and a 5-year warranty on labor
  • Manufactured in South Korea (this is a good thing, more on that below)

Delphi Water Filter Replacement

When you purchase an AlkaViva H2 ionizer, you get one of the best water ionizer filters in the world. The dual-filter set is manufactured in the United States.

AlkaViva has had its H2 series filters tested by an EPA-certified third-party lab for 172 known water contaminants.

The filters had spectacular results. Virtually all contaminants were reduced by 99.9%.

Of all the ionizer companies I’ve reviewed, AlkaViva filters impress me the most.

On top of that, when it comes time to replace your filters, you buy only the media and keep your plastic housing. AlkaViva did this to cut costs for you and reduce plastic waste. They’re the only ionizer company I’ve seen do this, and I’m sure others will soon follow.

Click here to view the full test results for AlkaViva’s H2 filters.

Filter life is 1000 gallons, you’ll only need to replace your filters annually.

You may also choose to buy a dual set of filters with fluoride removal.

AlkaViva uses silver and zeolite-impregnated carbon in its filters, which is the reason they’re able to remove all known water contaminants including VOCs, arsenic, and heavy metals to near undetectable levels.

Overall, these are the best water ionizer filters I’ve seen, and they’re made in the United States.

If you live in an area with particularly hard water, you may want to consider installing a whole-house filter to extend the life of your ionizer filters and ensure there’s no hard water buildup inside your machine.

AlkaViva also sells citric acid cleaning cartridges that you can use annually to clean the inside of your machine without taking anything apart.


Installing the Delphi H2 is a bit more complicated than installing an H2 countertop water ionizer. The video below shows you exactly how to install the Delphi under sink ionizer.

If you don’t feel comfortable doing it yourself after watching the video, you can always elect to hire a local plumber to get the job done right.

What I like most about the Delphi is you won’t have to go beneath the sink to change the water settings once the unit’s installed properly.

You control everything right from the Delphi faucet and can adjust the alkaline water settings to your liking.

Why are ionizers made in Korea and Japan the best?

Earlier in my review, I mentioned how it’s a good thing AlkaViva manufactures its ionizers in Korea.

The reason is that only Korea and Japan have certification programs in place to ensure the ionizers manufactured there are medical-grade ionizers.

AlkaViva has received the medical device GMP Certification.

It’s critical to know you’re buying high-quality platinum-coated titanium electrode plates. The plates are the most expensive/important part of your ionizer. That’s why the more plates a machine has the more expensive it is.

AlkaViva’s plates are made in Japan, the same place Enagic (Kangen) manufactures its plates. However, you spend $1,000s less on an AlkaViva H2 ionizer.

AlkaViva has been in business since 2002 and is one of the pioneers of alkaline ionized water in the United States. In other words, they know what they’re doing.

AlkaViva Reviews

AlkaViva has an A+ Better Business Bureau rating and has been accredited by the BBB since 2007.

In my opinion, they’re a 100% trustworthy company manufacturing legit ionizers. It’s just as (if not more) important to research a company as it is to read customer feedback.

Luckily for you, I’ve already done all the research on AlkaViva, and I wouldn’t feature their products on my site if I didn’t believe in them as a company.

I also like that the company started in Hawaii since it’s one of my favorite places in the world.

My Delphi Water Ionizer Review

Do I think the Delphi Ionizer is the best under sink water ionizer featured on my site? Well, that’s a tough call.

I believe AlkaViva undoubtedly produces some of the best water ionizers in the world.

If I had to choose the best under sink ionizer, I’d go with the Tyent UCE-11 overall because of the smartphone-inspired display and functionality of the machine.

For those of you who want the most powerful under-sink ionizer on the market, the Life Ionizer MXL-15 is the one for you.

I think Delphi is the best choice for people who put reliability above all. AlkaViva has one of the lowest return rates in the business for a reason, and they stand behind their ionizers with a lifetime warranty on parts and 5-year on labor.

The Delphi may not produce as wide of a pH range or as high a negative ORP as the MXL-15 or UCE-11, but it definitely gets the job done and more.

The bottom line is I give Delphi a big thumbs up. Buy the Delphi with the confidence you’re putting your money into a legit company selling a legit product.

You may also want to check out AlkaViva H2 countertop ionizers.