Starbucks Ethos Water
sold in USWhat's in it
| Oasis 2026-04-16 | |
|---|---|
| TDS mg/L | 97.3 |
| Hardness mg/L as CaCO₃ | 21.2 |
| Alkalinity mg/L as CaCO₃ | 22.8 |
| Calcium (Ca) mg/L | 5.66 |
| Magnesium (Mg) mg/L | 1.71 |
| Sodium (Na) mg/L | 8.9 |
| Potassium (K) mg/L | 0.758 |
| Bicarbonate (HCO₃) mg/L | 27.7 |
| Sulfate (SO₄) mg/L | 8.18 |
| Chloride (Cl) mg/L | 7.65 |
| Silica (SiO₂) mg/L | 4.01 |
- Oasis, 2026-04-16 — Starbucks Ethos Water Plastic Bottle · report ↗
Hardness and alkalinity are both in mg/L as CaCO₃, so they compare directly; grey numbers are worked out (hardness from Ca + Mg, alkalinity from HCO₃).
The label gives typical values; each measurement is one sample, so they differ a little. The Water list uses the label, and a measurement only where the label says nothing.
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Listed from Oasis's lab tests of bottled water sold in the US — add where it's from.
Numbers: Measured by Oasis. Labels change and springs differ — check your bottle.