It is possible..they did it in FL
https://www.cfpublic.org/politics/2025-07-01/florida-ends-fluoridating-its-water-july-1-heres-what-you-should-know
Florida ends fluoridating its water July 1. Here’s what you should know
As of Tuesday morning, Florida became the second state in the country to end its practice of adjusting fluoride levels in its water supply.
https://www.cfpublic.org/politics/2025-07-01/florida-ends-fluoridating-its-water-july-1-heres-what-you-should-know