It's not.
And what makes you think I proposed it be made so?
It's not.
Oh it's NOT? Tell that to the poor folks that have it dumped into their water supply.
It is if they add it to PUBLIC drinking water. You are assuming there is a benefit. There isn't.
I did a fair amount of research on this topic about a year ago. I had no opinion on the subject but was concerned about the dose my daughter was receiving. Her dentist was prescribing oral fluoride pills in addition to treatments and toothpaste. Her primary teeth were presenting evidence of fluorosis (which I later found the World Health Organization lists as indication of a toxic dose). What I found was that as long as the diet had adequate calcium and boron, there was no benfit to the use of fluoride for prevention of dental caries and increasing indication of neurological harm.
The final nail in the "pro-fluoride" argument came when I started searching the literature for indication of dietary fluoride deficiency in any field outside dentistry. Teeth are bone. If fluoride is a necessary constituent for proper bone formation, or augments healthy bone condition, one would expect to find that in the literature. I found nothing but the contrary.