Ionized vs Alkaline Water: Understanding the Difference

Alkaline water is simply water with a pH level above 7. The pH scale runs from 0 to 14, with 7 being neutral. Regular tap water typically has a pH around 6.5-7.5, while alkaline water ranges from 8 to 9.5 or higher.

The "alkaline" designation refers solely to the water's position on the pH scale. It says nothing about how the water became alkaline or what else might be in it.

Water can become alkaline in several ways:

• Naturally: Spring water flowing over rocks picks up minerals like calcium, magnesium, and potassium that raise pH
• Mineral addition: Manufacturers add minerals to purified water
• Electrolysis: Running water through an ionizer (more on this below)

For a deeper comparison of alkaline water versus regular tap water, see our guide: Alkaline Water vs Tap Water: A Complete Comparison.

Ionized water is water that has been through a process called electrolysis. During electrolysis, an electric current passes through the water, which separates it into two streams: one alkaline (with a negative charge) and one acidic (with a positive charge).

The ionization process does more than just change pH. It creates water with altered electrical properties, specifically a negative Oxidation Reduction Potential (ORP). This negative ORP is what gives ionized water its potential antioxidant properties.

Think of it this way: all ionized drinking water is alkaline, but not all alkaline water is ionized. The ionization process adds an additional dimension that simply raising pH does not provide.

ORP measures a substance's ability to either oxidize or reduce other substances. It's measured in millivolts (mV):

• Positive ORP (+mV): Oxidizing potential. Regular tap water, sodas, and most beverages have positive ORP values.
• Negative ORP (-mV): Reducing (antioxidant) potential. Fresh fruits, vegetables, and ionized water have negative ORP values.

Ionized alkaline water typically has an ORP between -200 and -800 mV. This negative charge is what proponents believe gives ionized water its potential to neutralize free radicals in the body, similar to how antioxidant-rich foods work.

Simply alkaline water (made by adding minerals) has a neutral or positive ORP, meaning it lacks this potential antioxidant property entirely.

Beyond the measurable ORP difference, ionization proponents suggest several additional benefits:

Molecular Cluster Theory

Some research suggests that electrolysis creates smaller clusters of water molecules (micro-clustering). The theory is that these smaller clusters can be absorbed more easily by cells, leading to better hydration. While this remains an area of ongoing study, many ionized water drinkers report experiencing improved hydration compared to regular water.

Antioxidant Potential

The negative ORP of ionized water means it has the potential to donate electrons to free radicals, theoretically neutralizing them. This is similar to how antioxidants from food work. While more research is needed, this antioxidant potential is a unique property of ionized water that mineral-added alkaline water simply does not have.

For more on the safety and science of alkaline water, read: Is Alkaline Water Safe? What Science Says.

At Hydralife, we don't make you choose. Our water is both ionized AND alkaline, meaning you get:

• A pH of 9.5+ for alkaline benefits
• Negative ORP for antioxidant potential
• Multi-stage purification that removes contaminants first
• Beneficial minerals added back for optimal taste and health

Our process starts with thorough purification (including reverse osmosis to remove South Florida's chloramine, hard water minerals, and contaminants), then ionizes the water through electrolysis, and finally adds back beneficial minerals in the proper balance.

Learn more about our complete guide to alkaline water: The Complete Alkaline Water Guide.

Your choice depends on what you're looking for:

• If you just want better-tasting water: Any quality alkaline water will likely taste better than South Florida tap water.
• If you want potential antioxidant benefits: Only ionized alkaline water provides negative ORP and its associated antioxidant potential.
• If you're an athlete or very active: Ionized alkaline water may support better hydration and recovery. See our article on Alkaline Water for Athletes.
• If you want comprehensive water quality: Look for ionized alkaline water that starts with proper purification, ensuring you're not just ionizing contaminated water.

The bottom line: ionized alkaline water offers everything that simple alkaline water does, plus the additional benefits of negative ORP and potentially better cellular absorption.