The thing about this multi-year rigorous study funded by the NIH/NIEHS/EPA is that it validated dozens of human studies and hundreds of laboratory studies that all found that prenatal exposure to fluoride even in extremely low doses consistent with 'optimal fluoridation' result in subtle brain damage when the exposure is prenatal. (Bashash et al. 2017)

Another neurotoxicity study (Malin & Till 2015) suggests that prenatal and/or youthful exposure to fluoride even if water concentrations are 'optimal' results in more learning disabled 11 year olds. 

Don't think you can just drink bottled water while pregnant and while your kids are little. Every food prepared with or gown with fluoridated water has absorbed fluoride. It's very simple - DO NOT ADD POISON TO WATER! That's even a law, but one that is ignored when it comes to fluoride because of the politicking.