As background, the Rambam in MT Brachot 8:1 writes
When a person drinks water for an intention other than fulfilling his
thirst, it is not necessary for him to recite a blessing beforehand or
and this codified by SA OC 204:7.
Examples of drinking water not for the sake of thirst include clearing his throat, swallowing a pill, facilitating urination [e.g., for a medical test], etc. (R Binyomin Forst, The laws of brachos, p. 135).
Now to your question, the Mishna Brura (204:42) writes that if you get a benefit from the water, it is as if you drank because you are thirsty, and therefore have to make a blessing.
So it seems to depend on how much benefit you derive from the bubbly water. I personally don't like it and only drink it when I have no choice and I'm really thirsty, and therefore wouldn't have to make a blessing. Someone buying this bubbly water because he enjoys the bubbles would have to. (Note there are other examples of "subjective blessings", e.g., chocolate-covered raisins.)
I discussed the above with R Binyamin Tabady who agreed with the reasoning but, of course, consult your rabbi
before implementing anything you learn here.