The CDC reports, tests by National Sanitation Foundation (NSF) revealed arsenic was present in sample batches of FSA. When trace amounts were present, the treated water had an average of 0.43 parts per billion (ppb) of arsenic, with a high of 1.66 ppb attributable to the fluoride additive. (2)
The NSF sets the allowable level of arsenic in fluoridation chemicals at 2.5 ppb. The maximum contaminant level (MCL) of arsenic in treated water is 10 ppb, set by the Environmental Protection Agency. But the maximum contaminant level goal (MCLG) of arsenic in drinking water is zero (5) and is based on health risks; however, the actual level permitted (MCL) is above 0, to account for difficulty in removing it or in measuring it. (6)
Trace levels of arsenic in drinking water increase a person's risk of developing cancer, according to a report from the prestigious US National Academy of Sciences. “People drinking water containing just one part per billion of arsenic have an increased risk of developing bladder or lung cancer of one in 1,000,” reports New Scientist magazine. (3)
In an analysis of 25 states, the National Resources Defense Council found about 8,000 U.S. water systems, serving 57,000,000 people, contained arsenic levels at 1 ppb or higher.(4)
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