Nevillea

The purpose of the EPA MCL is to establish a safe level of contaminants in drinking water, below which adverse effects do not occur, short or long term.  This takes into account variables such as "how much water you drink".  If it didn't there would be no point in establishing these MCLs.  

Arsenic is ubiquitous all throughout nature.  You consume arsenic in a large amount of food and drink, especially fish.  Why are you not wreaking havoc over arsenic in all of these other substances you ingest?  Think maybe it's because you aren't really concerned  about arsenic but are simply using that as an excuse to oppose fluoridation for lack of any other reason? 

THE EPA MCL for arsenic is 10 parts per billion.  This is an astronomically minuscule amount because it accounts for the other variables.  The maximum detected level of arsenic in fluoridated water is only 6% of this minuscule amount.  You have no argument here.

Steven D. Slott, DDS