I still find the whole bottled water thing odd. I remember a time when there was just Poland Spring and Deer Park and you only bought a bottle of water if you were absolutely dying. From my vantage point, it seems like consumerism, across the board, has skyrocketed in the past 20 years.
I was just having conversation with a fellow Gen Xer about how people just don't know how or don't care to do things for themselves anymore. As I look at all the subscriptions and consumer goods and delivery services that make headlines, it seems like we, as a culture, are spending a lot more money on what used to be called luxury expenses.
Some people legitimately have bad municipal water. They need to put pressure on their civic leaders to fix their gross negligence. For most other people, I would really recommend a filter system you can install either at the source of your water, under your kitchen sink, or in a pitcher in your fridge.
It's worth noting that even the aluminum water bottles (Stanley, etc.) come with some health concerns. If you're getting something from China, I've heard their manufacturing and raw material quality control isn't up to US standards. Regardless, most if not all aluminum water bottles have a plastic liner. Your best bet is glass. If you have an aluminum bottle, don't use it for hot liquids and try to keep it out of the sunlight for too long.