Fluoride in water always sounds good to people who want "better smiles" but it's 99% a waste of the money spent:
1. The version of fluoride they put in the water (Hexafluorosilicic acid) is not shown to help with dental decay issues. Sodium Fluoride is the chemical the ADA studies and recommends for toothpaste and dental products.
2. Hexafluorosilicic acid is a product manufactured from industrial waste in the aluminum industry and is considered a toxic substance. If industry hadn't conned municipalities in to putting it in the water supply as a "fluoride source" it would cost them a good chunk of change to dispose of the stuff. (Look up ALCOA and fluoride).
3. Consumption of unfiltered tap water, I'd say, is just about zero. I know no-one that drinks any substantive quantity of tap water that the fluoride content in it would ever have any clinical effect. Almost any filter designed to remove impurities will remove the fluoride from tap water.
4. Even if people were drinking only tap water, over 95% of the water used in an average municipality is very consumed by any living thing. It washes cars, waters lawns, bathes people, flushes toilets, cools industrial equipment, etc.
5. When I had this discussion with my town a few years ago asking them to provide numbers they told my it cost $63,000 a year in product and personnel to run the fluoridation system for 29.5 million gallons of potable water. That sounds like very little, .2 cents ($.002) per thousand gallons or an average of about $.30 per family per month. Sure when you make the numbers small it doesn't look like much, but think about what $63,000 a year gets if directed an other programs in a town. Another teacher or two? Extended library hours on the weekends? A new after school program?
6. No-one, I mean I searched hard, has studied the rate of change in a community pre and post fluoridation of tap water since an initial study of Grand Rapids and Muskegon in 1945. A study that was ended prematurely but touted as a success anyway despite its very unscientific lack of compensating for outside factors not related to the study itself and the "control" changing programs during the study.
7. The Grand Rapids "study" was based upon Sodium Fluoride, which again is not what we put in the water today. So even if the result was positive the hexafluorosilicic acid used today has never been studied for prevention of tooth decay in municipal water supplies and is a very different chemical compound just like Carbon Monoxide and Carbon Dioxide are very different chemicals. Search for
8. There is no version of any type of fluoride that is indicated by the FDA for the prevention of tooth decay. The municipal water companies are adding an non-FDA approved and unregulated drug to our water supply. The other substance added to water supplies (chlorine to be simple) is approved by the FDA for water and food sanitation.
As you can see, there is simply no supporting truth to the argument that fluoride in municipal water prevents tooth decay. It does cost a significant amount of money, and almost no-one drinks the fluoridated water anyway.
Do your own research. You will come to the same conclusion: municipal water fluoridation is based on lies, it's a waste of money, it doesn't work and it may actually cause harm to public health.