[josh_fyi]

In Israel they add minerals back in because the desalinated water is too pure.

[politelemon]

I've vaguely known that what the taste is related to minerals. Does anyone know what kind of minerals they're adding back in?

[theatrus2]

Usually a combination of calcium carbonate (or bicarbonate for solubility), calcium chloride, magnesium chloride, and or the sulfate versions of the chlorides.