Removing fluoride from water Dear Kim, I am a dental assistant in Westbury, New York. Recently, a patient asked me if boiling tap water would remove the fluoride. Kim Loos Dr. Kimberly A. Loos practices general dentistry in San Jose, California. She is also a clinical instructor at University of Pacific School of Dentistry and an editor for Dentistry On-Line. Dear Pat, I don't think that fluoride can be removed from fluoridated water by simply boiling it.
Sulfur is one example.
I think that boiling fluoridated water is similar to boiling salt water. The water evaporates releasing steam into the atmosphere. Salt is sodium chloride or NaCl. If the water is boiled away completely, salt crystals are left crusted to the surface of the pot. If my educated guess is correct, then boiling actually increases the concentration of fluoride per unit volume of water as the water is evaporated away.