In this guide
A water ionizer uses electricity to split tap water into an alkaline stream and an acidic stream. Machines like the Kangen K8 let you choose between several pH settings at the push of a button.
How an ionizing machine works
Inside the ionizer, water passes over electrically charged plates. Through electrolysis, the water separates into alkaline water (higher pH) on one side and acidic water (lower pH) on the other. The machine sends each to its own outlet.
What people use ionized water for
- Drinking: many people prefer the smooth taste of mildly alkaline water
- Washing produce: strong alkaline water for rinsing fruit and vegetables
- Cleaning: strong acidic water for surfaces, without harsh chemicals
- Skin and hair: mildly acidic "beauty water"
What the science says
You'll find big health claims about alkaline water online. The evidence for them is limited: your body tightly regulates its own pH no matter what you drink. Enjoy ionized water for its taste and household uses, and talk to your doctor about any medical condition.
Ionizer or reverse osmosis?
An ionizer changes pH; it isn't designed to remove contaminants the way reverse osmosis does. If water safety or taste is your main concern, start with filtration. See the Kangen K8 or try ionized water at our refill station.
