I’m picky about water.  I never liked tap water.  My mom boiled our water in a water boiler and the taste and quality was much improved.  I use a carbon filter built into my fridge for drinking water and ice cubes.  Taste better than tap water but the I can tell some stuff is still in the water.  I’ve tried reverse osmosis filtered water and that removed everything so there was no flavor.  I tried different water machines and they ranged from good to pretty good.