I don’t particularly like the taste of plain water myself. I generally drink Seltzer or club soda, because the carbonation gives them some zip. I have found lately, however, that I enjoy ice water from the fridge (it is filtered a bit by the fridge—and it also contains far fewer minerals than the water in the area I used to live in).
I also ran out of Seltzer recently and was surprised to find that the spring water I buy for my rats (they don’t do well with chlorinated and fluoridated water) was quite tasty, even though it was still and unrefrigerated.
I can only suggest, @PortHardy, that you give yourself some time. Taste can be retrained, sometimes faster than we might have believed. Purely as an example, it didn’t take all that long after I went keto for my taste to change enough for me to prefer unsweetened chocolate to chocolate with sweetener in it. When I started keto, I couldn’t touch the stuff, it was so bitter, so go figure!
Some other things that might help with the taste of plain water: people often dislike the taste of boiled or distilled water, because it hasn’t been aerated. Shake it up for a bit, and it might taste better. Spring waters contain varying combinations of minerals, said minerals often being a selling point, where water from the famous sources is concerned (I’m thinking Spa, Pellegrino, Perrier, Gerolsteiner here). The mineral combinations do affect the taste, so you may have to experiment with various bottled waters to find one with a taste you like.
As far as carbonation goes, Seltzer and club soda are artificially carbonated, but bottled waters are supposed to contain only whatever carbonation is naturally present in the water. It is considered cheating to carbonate spring water after bottling, but since a lot of the naturally-present carbon dioxide escapes during the bottling process, people generally find it acceptable for the bottler to capture it as it escapes during bottling and re-add it to the water afterward.
Mostly