[gruez]

You can stop adding fluoride to water with basically zero consequences (especially if people are already using fluoride toothpaste), whereas "pesticide residues, PFAS contamination, leachates" can't be removed without significant economic impact. Moreover, the economic impact from stopping "pesticide residues, PFAS contamination, leachates" is immediate, whereas any cavities that might show up from stopping flouride will take decades.