Now with spring water!
There’s no such thing as a healthy soft drink alternative. They’re all chock-full of sugars and other things we can’t pronounce. Anyway, if we take the OP’s word for truth, there’s one soft drink company that adds a gallon of spring water into an entire batch of ice tea just so they can legally use the “Made with Spring Water” label.
We have no idea how much water actually goes into a batch of ice tea, but we imagine it’s hundreds if not thousands. So, yeah, that spring-water ice tea you’re drinking is probably bogus. Don’t fall for confusing labels, no soft-drink manufacturer cares about making a truly healthier option.