You can get a water softener if the minerals bother you, or even a reverse osmosis filter if you wanna go fancy, but it is perfectly healthy.
The joke about bottled water is that people pay huge taxes to have some of the cleanest water on the planet from massively expensive and sophisticated water treatment plants, but then go and get bottled water which is almost ENTIRELY unregulated and if sold in the same state is not AT ALL regulated and is often equal or LESSER quality than municipal since it does not have to meet the same standards for public health when it isn't just tap water.
Bottled water that doesn't have the source as spring water IS municipal water. My girlfriend was drinking Aquafina for example, and kept arguing with me when I told her its tap water per Pepsi, ugh. It is so enormously inefficient and environmentally irresponsible to use so much oil per gallon of water (plastics and gas for distributing) and just adds to our landfills all thanks to millions of dollars in industry marketing to convince people that tap water is somehow dirty.
On my trips in Malaysia and Thailand and the like, absolutely, I drink bottled water. In the United States, Germany, and France though, no way. Its big business scam.
Please go to Youtube and search "Penn and Teller Truth about Bottled Water. I'd link, but Penn curses a bit heheh!