Arsenic in Drinking Water: Costly Change Could Lower Levels

A recent study estimates that the arsenic put into the water supply, derived from the chemical used to fluoridate water — a byproduct of fertilizer manufacturing — costs the United States $1 billion to $6 billion annually in medical treatments for arsenic



via LiveScience.com http://www.livescience.com/38478-fluoridation-cancer-costs.html