Crystal Geyser – Johnstown, NY is a still water from USA. Calcium-bicarbonate type, low mineralization.
| Ion | mg/L |
|---|---|
| Calcium (Ca²⁺) | 52 |
| Magnesium (Mg²⁺) | 11 |
| Sodium (Na⁺) | 14 |
| Chloride (Cl⁻) | 33 |
| Sulfate (SO₄²⁻) | 12 |
| Bicarbonate (HCO₃⁻) | 170.7 |
| At a glance | |
|---|---|
| Total of these six minerals | 292.7 mg/L |
| Total hardness (as CaCO₃) | 175.1 mg/L |
| Alkalinity (as CaCO₃) | 140 mg/L |
| Sulfate-to-chloride ratio | 0.4:1 |
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) | 1.13 g | 1.19 g |
| Epsom salt (MgSO₄) | 0.63 g | 0.67 g |
| Chalk (CaCO₃) | 1.82 g | 1.92 g |
| Baking soda (NaHCO₃) | 0.79 g | 0.83 g |
Closest match with these salts; it can't reach Ca 57.7 mg/L vs 52, Mg 4.3 mg/L vs 11, HCO3 150.5 mg/L vs 170.7 exactly.
Chalk (CaCO₃) doesn't dissolve well directly in mash or sparge water without dissolved CO₂ - slurry it in carbonated water (e.g. sparkling water) before adding it, rather than mixing it into still water or sprinkling it in dry, or the calculated amount may not fully dissolve. How to dissolve chalk with CO₂
Johnstown, NY spring, Johnstown, New York. Values from brand website. Analysis/label date: Analysis Report 2026. Report prints bicarbonate as CaCO3 (equal to alkalinity); converted x1.22 to HCO3.