Re. the "the anti-fluoridation nutter community", I can see a few comments in previous postings.  E.g. some dubious report on a dubious website that was never reported in any respectable journal.  Evidence of a conspiracy and cover-up?  Sounds more like the original story is hokum, and that's why no respectable journalist touched it.  

As to the present incident, there are two ways fluoride could contribute to ill-health.  One is a chronic route, involving moderately high doses (e.g. 5 times normal levels) for long periods (e.g a lifetime), which can cause bone/teeth problems.  The incident reported lasted around 3 hours, so effects to bone/teeth from chronic exposure is not a concern.
  
The other mode is acute poisoning, in which case the intake (per body mass) needs to be extremely high.  (Evidently one fluoride tablet contributes more per kg for a baby than for an adult;  however babies generally don't drink a couple of large glasses of water at one sitting, whereas adults might.)  The fact that no ill health (let alone death!) was reported indicates that fluoride is not as harmful as the "nutters" fear (or hope?!?).  
The point is that absence of fluoride contributes to ill health in the form of dental decay.  No-one is forced to consume fluoridated water.  It is the obligation of the state to provide the best services that they are able to reasonably afford.  In the case of drinking water, this normally means the water should be fluoridated.  Not to do so would be a disservice to the community.  

Still unsure???  Consider these analogies.  
Doctors and hospitals try to save lives:  we consider it their duty.  So when a person is unconscious and bleeding to death the 'default' action is to provide a blood transfusion.  Sure there are some religious zealots around who reject that action, as they are generally entitled (morally, if not legally).  That _doesn't_ mean the default action should be to refuse everyone a blood transfusion, unless they 'opt in'.  

How about folate?  It's probably deadly if you ate kilograms of the stuff each day.  But we know it prevents birth defects, and so it is added as a supplement in bread.  Not everyone knows they are going to get pregnant, not everyone knows what to do.  Should we let their babies die because of an imagined risk that a bakery somewhere might accidentally switch the ratio of folate and flour, and kill everyone???