After monitoring water fluoridation’s impact on millions of people over 50 years in the UK and nearly 70 years in the United States, we can be reassured of its safety. There have been many authoritative reviews which are clear that water fluoridation is safe and effective. Among them are:
(European) Scientific Committee on Health and Environmental Risks - SCHER (2011) http://ec.europa.eu/health/scientific_committees/environmental_risks/docs/scher_o_139.pdf
US Community Preventive Services Task Force (2013) www.thecommunityguide.org/oral/supportingmaterials/RRfluoridation.html
Royal Society of New Zealand (2014) https://s3.amazonaws.com/s3.documentcloud.org/documents/1278925/fluoride.pdf
The Australian National Health and Medical Research Council report (2017)
https://www.nhmrc.gov.au/_files_nhmrc/file/your_health/fluoridation/17378_nhmrc_-_information_paper.pdf