I’m not going to say much about this topic other than everywhere I read I hear that this is a temporary change. Sure, there is wide spread speculation as to why this is happening, but until Universal releases additional information, it’s best to simply know the rules and follow suit.
Personally, I would simply bring in an empty bottle so you can refill in the parks. If you don’t like the taste of the water, using flavor packets usually does the trick.
There ya have it.
Have a great one!