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Tenkai no Mizu 1000 (天海の水1000)

Japan (Kōchi) · Mineral · sold in Japan

What's in it

43better.com Muroto deep-sea water, Kōchi
Hardness mg/L as CaCO₃ 1000
Calcium (Ca) mg/L 71
Magnesium (Mg) mg/L 200
Potassium (K) mg/L 69
  • 43better.com — Muroto deep-sea water, Kōchi (label per 100 ml × 10) · 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.

+ Add a measurement — members, on Tea Notes

About

Deep-sea water, very hard and magnesium-rich.

Numbers: From 43better.com. Labels change and springs differ — check your bottle.