Water Hardness Calculation
Calculates water hardness based on the mineral content of the water.
The mineral content is listed on commercially available bottled water, for example.
| Hardness | |
| Category |
- Calculation Formula
- Hardness (mg/L) = Ca (mg/L) × 2.497 + Mg (mg/L) × 4.118
- We use American hardness, which converts the amounts of calcium and magnesium salts into the equivalent amount of calcium carbonate (CaCO₃). The classification of hard and soft water complies with WHO (World Health Organization) standards. Soft water is generally recommended for making tea and cooking rice, while hard water is better suited for braising meat.
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