Some Anglosphere countries (USA, Canada, Ireland, Australia) love to add fluoride in water. They say it’s good for people’s dental health.
Europeans (Germany, Finland, Italy, France, Netherlands, Switzeland) think it’s wrong/unethical.
There is actually regular controversy around this
https://hsph.harvard.edu/news/fluoridated-drinking-water/
Do they put fluoride in your drinking water ? Are you happy with that?
I’m on a well so no added fluoride. I do make sure to use a fluoride mouth wash to compensate.
Fun fact, sodium flouride is a naturally occuring salt in ground water.
I haven’t had it tested to see how much is in there. I can tell you there plenty of iron lol