Is there any risk to fish or wildlife from the addition of fluoride to drinking water?
No. While some studies have shown that very high levels of fluoride may be detrimental to fish (and must be removed to meet EPA drinking water standards), those studies examined exposures to fluoride levels 500% or more above levels recommended for community water fluoridation. Fluoride entering waterways from fluoridated drinking water supplies adds, at most, only a tiny fraction to the background levels of fluoride found naturally in the receiving waters.
