First, it's a scam because much of the bottled water is nothing but tap water. In addition, and more importantly, it's a serious drain on the ecosystem. Not only do the bottles end up on the roadside and in landfills, the process of making them is very damaging to the environment.
In addition, I have concerns about bad stuff from the soft plastics leaching into the water. And the most recent "water" trend is to add sugary flavor to it.
Stop buying bottled water.
Watch this news clip. (Thanks, JP)
Then read this article.
Give up bottled water. Instead, purchase a decent filter (you can get a pitcher-sized one for about $20) and use a refillable bottle.
As for tea, I use tap water that's been filtered through my pitcher. It works great. I actually prefer it over bottled water because the quality of the latter is so variable.
Giving up bottled water is a very simple thing to do. The world is worth it.