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?
Canada here. Not aware of any limitations advertised.
I can taste the variations in chlorine and iron content between cities and towns (pipe vs well water). I’m assuming that would overpower any fluoride taste if it’s even sensible.