Arrowhead – Purified with fluoride is a still water from USA. Sodium-bicarbonate type, very low mineralization. Purified water with added fluoride.
| Ion | mg/L |
|---|---|
| Calcium (Ca²⁺) | 3.9 |
| Magnesium (Mg²⁺) | 2 |
| Sodium (Na⁺) | 4.7 |
| Chloride (Cl⁻) | 6.8 |
| Sulfate (SO₄²⁻) | 8.2 |
| Bicarbonate (HCO₃⁻) | 11.9 |
| At a glance | |
|---|---|
| Total of these six minerals | 37.5 mg/L |
| Total hardness (as CaCO₃) | 18 mg/L |
| Alkalinity (as CaCO₃) | 9.8 mg/L |
| Sulfate-to-chloride ratio | 1.2:1 |
Mineral salts to dissolve in reverse-osmosis or distilled water, calculated by the BrewWaterSolver solver with the most common homebrew salts.
| Salt | 5 gal (18.9 L) | 20 L |
|---|---|---|
| Calcium chloride (CaCl₂) | 0.12 g | 0.13 g |
| Epsom salt (MgSO₄) | 0.34 g | 0.36 g |
| Chalk (CaCO₃) | 0.02 g | 0.02 g |
| Baking soda (NaHCO₃) | 0.19 g | 0.20 g |
The common salts reproduce every ion within 10%.
Public Water Supply or On-Site Well, not specified. Values from brand website. Analysis/label date: 2025 Water Analysis Report. HCO3 calculated from total alkalinity (as CaCO3) x1.22.