Depends on the country. In some European countries tapwater is extremely well controlled and can be considered cleaner than bottled water. I wouldn't say that the contamination is unknown:

https://www.umweltbundesamt.de/en/topics/water/drinking-wate...

Some companies are even selling tapwater in bottles for a good profit, so many drink tapwater from bottles without knowing:

https://www.theguardian.com/us-news/2020/apr/23/pepsi-coke-b...

Water in plastic bottles can contain solvents and microparticles, and be worse because of that:

https://www.time.com/5581326/plastic-particles-in-bottled-wa...

Don't talk in generic terms if it doesn't apply at all places. In Germany for example, tap water is perfectly fine. Some might not like it that much because it perhaps is too hard or something, or your house might have old pipes, but it is healthy.

A claim which doesn't hold the test of science. Do you have a stake in Danone?

so is bottled water

Not everywhere is Flint, MI