Wine needs time to smooth out its tannin structure, but the quality of mineral water is not determined by its age. Vintage does influence water, however.
Carbon Dating Bottled Water
Very young waters like Hawaiian Springs and bottled rainwaters don’t have much time to absorb minerals, so they tend to have low TDS levels and hence light, clean tastes.
Old water may feel more substantial, but Trinity and Fiji prove there are old waters with low levels of mineral content. The age of a water is less important than the local geology.
The age of bottled waters should be noted, though, as an enjoyable part of their backstories, which add to the epicurean pleasure. Rain that fell when Balboa discovered the Pacific Ocean more than 450 years ago is in the Fiji water you might drink today. Bottled rainwaters such as Cloud Juice, on the other hand, may be less than one week old.