It's quite simple really. If you are in the minority (0.01%) and crackpot enough to think fluoridated water is causing you harm, then get a filter, or use a rainwater tank, or find your own source of water, or buy bottled water. Fluoridated water is a very effective public health measure (strong evidence for this) and without any real evidence against it's safe use, it's a cost to the rest of society (99.9%) to remove it.