A LOT of people do not want to consume fluoride in their drinking water. For one thing it is a variable depending on how much water you drink the more of it you consume, therefore its rationing is uncontrolled. Fluoride has been proven to help topically with tooth decay but it has no proven benefit through ingesting. Both are reasons why you are not to swallow toothpaste. Look it up. Just because it is added to the water supply doesn’t mean it is good for you or your children or your pets.
As to consulting dentist or doctors: Dentist are big proponents of fluoride and therefore they hardly give any credence to its possible side effects. Doctors, well doctors have never gotten anything wrong in the past. My point is it is your responsibility to find out for yourself the available research out there as to why you should or why you should not be drinking it in your water supply. Be your own advocate.