Pure H2O is only slightly electrically conductive. Its the dissolved minerals in natural water that makes water conductive enough to ruin your electronics.

In terms of mineral content for diet, its negligible. Turns out we get 10,000x more minerals and nutrition from food.

However, the mineral profile of a water sample can affect the taste.

I filter my tap water through charcoal and fluoride filters. It still retains the dissolved minerals and I often add trace mineral drops when I drink it. I travel with this system and I can taste the difference in the water at each location.