This is important because Sodium Fluoride is a very toxic chemical, that is hazardous to our health. This chemical has a Health Hazard rating of 3 (High), and the MSDS (Material Safety Data Sheet) lists this as a chemical that is NOT to be ingested...at all. Many cities across the country have investigated, and removed Sodium Fluoride from their drinking water. But dont take my word for it, here is the MSDS (Material Safety Data Sheet) on NaF (Sodium Fluoride)

http://www.sciencestuff.com/msds/C2579.html

After reading this information, ask yourself, do you want this chemical in your drinking water? Or your kids drinking water? I present this information because I care.