> it is beyond my power of understanding how this could be mandated by law in USA It isn't mandated by law in the USA. All water contains some naturally occurr

> it is beyond my power of understanding how this could be mandated by law in USA It isn't mandated by law in the USA. All water contains some naturally occurring fluoride, some localities choose to add additional fluoride to their water in the USA but certainly not all. I'm pretty sure it is added in something like 60% of city water supplies.