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Hotaka no Tennensui (武尊の天然水)

Japan (Gunma) · Mineral · sold in Japan

What's in it

43better.com label
Hardness mg/L as CaCO₃ 22

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

Very soft.

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