Types of Water

💧 Why This Matters

Not all water is created equal. Each type carries different qualities — minerals, contaminants, structure, and cost — all of which affect hydration and health.

📊 Quick Comparison Table

Key: ✓ = generally supportive · △ = mixed · ✗ = less supportive

Criteria	Tap Water	Bottled Water	Reverse Osmosis (RO)	Bottled “Alkaline” Water	Electrolyzed Reduced Water (ERW)
Contaminants	△ May contain chlorine, fluoride, lead, pesticides, and other contaminants (1)	△ Often filtered, but testing shows microplastics & variable quality (2)	✓ Removes most dissolved solids (3)	✓ Often filtered, but additives vary	✓ Multi-stage filter reduces chlorine, lead, VOCs (4)
Minerals	△ Varies by region; can contain calcium/magnesium	△ Some, but often low	✗ Strips all minerals (5)	△ pH adjusted with sodium carbonate or additives, not natural minerals (6)	✓ Retains natural minerals in source water (4)
Hydration Support	△ Minerals help, but contaminants may stress body	△ Convenient, but low mineral + plastic leaching (2)	△ Pure but “empty”; re-mineralization often required (5)	△ pH altered artificially; hydration claims not supported (6)	✓ Mineral-rich, electrolysis produces ERW with antioxidant properties (7)
Eco Impact	✓ Delivered locally, no plastic	✗ 500+ billion plastic bottles yearly (8)	△ Wastewater generated (3–4 gallons wasted per gallon filtered) (9)	✗ Still bottled plastic + shipping impact	✓ At-home system, reusable, reduces bottle waste
Cost Over Time	✓ Lowest cost	✗ $1–$4 per gallon	△ System + filter maintenance costs	✗ Premium markup ($2–$5 per liter)	✓ One-time investment; cents per gallon long-term

🔬 At a Glance: The Science

Tap Water: Regulated under EPA standards, but can contain residual contaminants from old pipes, chlorine byproducts, and agricultural runoff (1).
Bottled Water: Convenience at a cost — microplastic contamination has been documented in nearly all major brands (2), plus weak regulation compared to tap.
Reverse Osmosis (RO): Extremely pure, but removes essential minerals. WHO warns long-term consumption of demineralized water may affect cardiovascular and bone health (5).
Bottled “Alkaline” Water: Typically created by adding sodium bicarbonate, potassium, or magnesium salts. This raises pH but does not provide the same redox potential or molecular hydrogen found in electrolysis-based alkaline water (6).
Kangen Water® (Electrolyzed Reduced Water): Uses electrolysis to restructure water, producing negative ORP and dissolved molecular hydrogen, while retaining natural minerals (7).

📚 References:

United States Environmental Protection Agency (EPA). National Primary Drinking Water Regulations. 2023.
Mason SA, et al. Synthetic polymer contamination in bottled water. Front Chem. 2018.
Ahmad J, et al. Reverse osmosis and nanofiltration membrane filtration of water: A review. Desalination. 2020.
Enagic Technical Manual. Filtration and electrolysis specifications. Enagic International.
World Health Organization. Health risks from drinking demineralized water. WHO Report, 2005.