What´s the last thing you drank?

Depends on source of water.
Strange, but in my house i have on specific tap, where water actually tasty for me only. Other taps inside my home so shitty, dont know why.
It might have to do with the plumbing and fixtures.

If your home is very old, the piping might be slowly disintegrating, leeching metal particles into the water.

The water in the bathroom off my bedroom always tasted terrible and when I finally had it remodeled and updated, the contractor found galvanized pipes from 1931 in the wall behind the sink, toilet and shower and they were in really bad shape.