There are exceptions, though, so if health is your concern, you might want to test both your tap and bottled water.
I'm surprised this myth gets repeated so often on HN. It's not true- the standards for purified bottled water are quite high[0].
[0]https://www.fda.gov/consumers/consumer-updates/bottled-water...
2. The original article you are commenting on suggests that bottled water contains more microplastics than tap water.
That’s not how logic works. That there are instances of municipal water supplies whose quality is sufficient to meet bottled water standards doesn’t tell you anything about minimum standards for either municipal supplies or bottled water.
Further: I would expect quality of municipal supplies to vary widely. A city built on the side of a mountain with access to springs can just provide that water, and it’s still from “municipal” supply.
Hell, in my county this information is easily available online and in libraries and is broken down by measurements in the processing plant vs measurements in the distribution network. http://www.fultoncountyga.gov/images/stories/WR2/2017/CCR_20...
This won't directly tell you if your pipes are bad (and Atlanta does have some areas that used lead pipes from the county supply to the home) but it's a pretty good indicator of the water quality in my area.
If you're really concerned, it's almost always a better investment to get your tap water tested and fix the pipes than it is to buy bottled.
We buy bottled water hoping it would benefit our health over tap water.