Understanding Electrolytes and Bottled Water
Electrolytes are essential minerals—such as sodium, potassium, calcium, and magnesium—that carry an electrical charge when dissolved in water. They play a crucial role in vital bodily functions, including regulating fluid balance, nerve signaling, and muscle contractions. While most people get sufficient electrolytes from a balanced diet, certain situations warrant supplementation through enhanced beverages. This is especially true for athletes, individuals in hot climates, or those recovering from illness.
There are two main ways bottled water can contain electrolytes:
- Added Electrolytes: Purified or distilled water has minerals added back in for taste and function. These are often labeled 'electrolyte enhanced.'
- Naturally Occurring Electrolytes: Spring and mineral waters filter through rock formations, picking up naturally occurring electrolytes and minerals along the way. These vary depending on the water's source.
Popular Bottled Waters with Added Electrolytes
Several well-known brands add specific minerals to their water. Here are some examples:
- Smartwater: This brand uses vapor distillation to purify its water, a process that removes impurities and minerals. Electrolytes (calcium chloride, magnesium chloride, and potassium bicarbonate) are then added back in for a clean, crisp taste.
- Essentia Water: Essentia is a popular ionized alkaline water. After purifying the water through reverse osmosis, it's infused with trace amounts of electrolytes and ionized to achieve a high alkaline pH of 9.5 or higher.
- LIFEWTR: This brand undergoes a multi-step purification process. It is then pH balanced and infused with electrolytes, including magnesium sulfate and potassium bicarbonate, to enhance its flavor.
- Propel Electrolyte Water: A zero-calorie, zero-sugar option, Propel adds electrolytes and vitamins C and E to purified water, making it a functional beverage for hydration.
Bottled Waters with Naturally Occurring Electrolytes
Not all bottled waters with electrolytes have added minerals. Some naturally occurring sources provide these benefits:
- FIJI Water: Sourced from an artesian aquifer in Fiji, this water naturally filters through volcanic rock. This process infuses it with minerals like silica, magnesium, and calcium, which are naturally occurring electrolytes.
- Evian Natural Spring Water: Evian comes from a spring in the French Alps and travels through glacial rocks over 15 years. This journey gives it a balanced mineral composition and naturally occurring electrolytes, including calcium and magnesium.
- Icelandic Glacial Natural Spring Water: Sourced from Iceland, this spring water is known for its high alkaline pH and naturally occurring minerals.
Comparison Table: Enhanced vs. Natural Electrolyte Waters
| Feature | Smartwater | Essentia | FIJI | Propel | LIFEWTR | 
|---|---|---|---|---|---|
| Electrolyte Source | Added | Added | Natural | Added | Added | 
| Purification Method | Vapor Distilled | Reverse Osmosis | Natural Artesian Filter | Purified | Enhanced Filtration | 
| Key Electrolytes | Potassium, Calcium, Magnesium | Calcium, Magnesium, Potassium | Silica, Magnesium, Calcium | Sodium, Potassium | Magnesium, Potassium | 
| Notable Features | Vapor distilled for a clean taste | High alkaline pH (9.5+) | Naturally filtered through volcanic rock | Zero-calorie with added vitamins | pH balanced and flavor-enhanced | 
Choosing the Right Electrolyte Water
The best choice depends on individual needs. For casual, everyday hydration, most people get enough electrolytes from a balanced diet and regular tap water. However, electrolyte-enhanced water can be beneficial during prolonged exercise (over one hour), during illness with fluid loss (like vomiting or diarrhea), or when in a hot environment where heavy sweating occurs. For those who prefer a natural source, brands like FIJI or Evian offer electrolytes absorbed from their geological filtration process. Meanwhile, brands like Smartwater or Essentia provide a controlled, consistent mineral profile through fortification. It is crucial to read labels, especially for sports drinks like Gatorade or Powerade, which often contain added sugars and higher mineral content designed for intense athletic performance, not casual hydration.
Making Your Own Electrolyte Drink
For a more cost-effective and natural alternative, making a DIY electrolyte drink is an easy option. A simple recipe includes water, a pinch of sea salt (for sodium and chloride), and a squeeze of citrus juice (for potassium). Natural coconut water is another excellent source of naturally occurring electrolytes and can be a healthier, low-calorie alternative to sugary sports drinks. For more details on the benefits of electrolyte water, consult reputable health sources like Healthline, which provides useful insights into the role of minerals in hydration.
Conclusion
Many bottled waters contain electrolytes, both through natural processes and deliberate fortification. Brands like FIJI and Evian offer naturally occurring minerals from their unique sources, while Essentia, Smartwater, and LIFEWTR add electrolytes to purified water for a consistent product. Electrolyte-enhanced water can be a useful tool for rehydration during illness or intense exercise, but it is not necessary for most people's daily hydration needs. Understanding the differences and checking labels allows consumers to make informed choices that best support their health and wellness goals.