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What Is It?
Hardness is determined by the amount of calcium and magnesium dissolved in water. Hard water contains higher concentrations of these elements.
| Sampling Location | Sample Date | Parameters |
|---|---|---|
| Petit-Rocher, Zone 1 | 2025-10-01 | Hardness |
| Petit-Rocher, Zone 1 | 2025-04-15 | Hardness |