Understanding the Alkaline Water Difference
Alkaline water is simply water with a higher potential hydrogen (pH) level than regular tap water. While neutral water has a pH of 7, alkaline water typically measures between 8 and 9.5. However, the term "alkaline water" can describe two very different products: natural and artificial.
Natural Alkaline Water
Naturally alkaline water is sourced from springs or artesian wells where it passes over rocks and picks up minerals. As it filters through volcanic rock or mineral-rich soil, it naturally absorbs alkaline minerals like calcium, magnesium, and potassium, which increase its pH. This process gives the water a clean, smooth taste and a naturally occurring mineral profile. Examples include Icelandic Glacial and Waiakea.
Artificial Alkaline Water
Artificially alkaline water is created by processing regular water. This usually involves microfiltration and reverse osmosis to purify the water, followed by a process called electrolysis, which separates the water into alkaline and acidic streams. Electrolytes and other trace minerals are often added back in to enhance taste and increase pH. A prime example is Essentia Water. Some brands, like Dasani and Smartwater, use reverse osmosis and then add minerals to improve flavor, resulting in a higher pH.
The Contenders: A Look at Top Brands
Essentia Water
Marketed as "Supercharged Ionized Alkaline Water," Essentia uses a proprietary three-step ionization process to achieve a pH of 9.5 or higher. After purifying the water through reverse osmosis, it's infused with trace electrolytes for a smooth, clean taste. A study funded by the company showed it might rehydrate more efficiently than tap water for athletes.
Icelandic Glacial
Sourced from Iceland's legendary Ölfus Spring, this brand is known for its purity and naturally high pH of 8.4. The water is naturally filtered through layers of lava rock, giving it a unique taste and mineral profile. Icelandic Glacial was also the world's first carbon-neutral certified bottled water, appealing to environmentally conscious consumers.
Waiakea Hawaiian Volcanic Water
Originating from a volcanic spring on the Mauna Loa volcano in Hawaii, Waiakea is a naturally alkaline water with a pH of up to 8.8. Its volcanic filtration provides a clean, crisp taste and a naturally high silica content. The company focuses on sustainability, using 100% recycled plastic bottles and being certified carbon-neutral.
TEN Spring Water
Sourced from springs in the Great Appalachian Valley, TEN boasts one of the highest pH levels available in a bottled water, at a stable 10. It’s naturally alkaline, rich with electrolytes, and is one of the few brands with this naturally occurring high pH that does not come from a municipal source.
Eternal Water
Eternal is another naturally alkaline water sourced from protected underground springs. As the water filters through ancient rock formations, it acquires its mineral content and a naturally high pH of 7.8–8.2. The brand is known for its smooth taste and focus on natural sourcing.
Alkaline Water Brand Comparison Table
| Brand | Sourcing Method | pH Level | Key Characteristics | Taste Profile | Packaging Type |
|---|---|---|---|---|---|
| Essentia | Ionized (Artificial) | 9.5+ | Electrolyte-enhanced for hydration | Smooth and clean | BPA-free plastic bottles |
| Icelandic Glacial | Natural Spring (Lava Filtered) | 8.4 | Carbon-neutral, sustainably sourced | Clean, fresh, and pure | Recycled plastic and glass |
| Waiakea | Natural Volcanic (Spring) | Up to 8.8 | High in natural silica, carbon-neutral | Crisp, clean, and unique | 100% recycled plastic bottles |
| TEN Spring Water | Natural Spring | 10 | One of the highest natural pH levels | Mineral-rich, stable pH | Plastic and aluminum cans |
| Eternal Water | Natural Spring | 7.8–8.2 | Naturally filtered, mineral-rich | Smooth and enjoyable | Plastic bottles |
Beyond the Bottle: At-Home Alkaline Water
For those seeking a more eco-friendly and cost-effective option, several at-home methods exist:
- Alkaline Water Pitchers: These contain filters that use special mineral beads to increase the water's pH as you pour. While convenient, some reviewers find the resulting taste "silty" or "musty," and their long-term effectiveness is debated.
- Water Ionizers: These countertop devices use electricity to ionize and separate water into alkaline and acidic streams. They offer consistent, high-pH water but come with a significant initial cost.
- Filter Systems: Whole-house or under-sink filtration systems can be combined with remineralization filters to increase alkalinity. These are often more effective at purifying water than pitchers.
What's the Verdict: So, Who Has the Best Alkaline Water?
Determining who has the best alkaline water depends entirely on your priorities. For those who prioritize taste and a high, stable pH from an ionized source, Essentia is a popular and readily available choice. If a naturally occurring alkaline mineral profile and strong environmental credentials are more important, Icelandic Glacial or Waiakea are excellent options. For the highest pH available in a natural spring water, TEN Spring Water is the top contender.
Ultimately, the science on alkaline water's health benefits remains mixed, and staying consistently hydrated with any safe drinking water is the most crucial factor for overall health. If you enjoy the taste and feel of a particular alkaline brand, it can be a great addition to your hydration routine. Consider trying different brands to discover which one you prefer, or explore at-home filtration for a sustainable alternative.
Final Conclusion
Choosing the best alkaline water comes down to personal preference for taste, process (natural vs. artificial), and sustainability. While Essentia offers a consistent ionized experience, natural spring waters like Icelandic Glacial and Waiakea provide mineral-rich alternatives. The best choice is the one you will consistently drink to stay hydrated. Healthline provides an overview of alkaline water benefits and risks.
