A few days ago, as part of a twitter conversation I was having with the basically anonymous @SafeWaterHfx, I was sent an article in support of their claims that fluoride shouldn’t be added to municipal tap water. The anti-fluoridation crowd make a lot of noise online (they’re not unlike the anti-wifi folk in that regard), but there doesn’t seem to be any evidence in support of their position. Moreover, all the evidence seems to say that adding fluoride to municipal drinking water is a win in every possible way: it has a large positive effect on the population, it’s cheap, and it’s effective.
The argument that SafeWaterHalifax is putting forward (and you have to read between the lines as they’re either unwilling or unable to make an explicit direct statement) is that the levels of fluoridation in the municipal water in the US and Canada is harmful. Sure, they might prefer to couch that as “could be harmful”, but that’s just hedging. Given that they are arguing for it to be removed, you can’t make that argument on the basis that something “could be” harmful, without some sort of belief that it actually is.