Sometimes you have to decide whether or not to put your faith in the medical profession. They say it's safe, and they say it will make a difference, so just like with vaccinations, I've chosen to believe them.
Admittedly, those feeding their children sugary crap as a drink instead of water are unlikely to see big benefits from it. But there has to be a starting point; fluoride in the water is it.
And for those who believe it's going to negatively affect them - there are options. Get a filter which removes the fluoride, buy bottled water for drinking. The anti-fluoride people can make those choices for their individual families, but don't take the potential benefits away from a toddler who could well benefit from drinking fluoridated water.
The medical profession firmly believes that fluoridation over the long-term helps to build stronger teeth and, if that means fewer kids are having fillings before they start school or, worse yet, having rotten teeth pulled out before they're out of kindergarten, then let's do it.
Now it's time for the Government to follow it up with the introduction of a sugar tax to really see the country's kids reap the benefits.