In 1960 Union Carbide gaseous diffusion released 5000 and 7000 pounds of uraniumhexafloride into the atmosphere and Didn't tell any one so we could take iodine. My dad Everett Ramsey didn't know in spite of the fact he worked there and had a Q security clearance. That is where the fluorine came from in the beginning that they put into the water and yes it was radioactive. Contact the Paducah Sun for more information. You are working on 60 year old standards before they started putting fluorine in everything. Teflon pans get recycled and the Teflon vaporizes. Freon goes into the atmosphere and get bombarded by cosmic rays at 100000000 degrees. I don't know how much fluorine are in people which means that 99.9975 of the rest of don't know either. I do know no matter what the chemical some one will have trouble getting rid of it. These people will have brittle bones and teeth but don't know the cause. If they are diagnosed they will be told to buy bottled water for the rest of their life.