Is it safe to drink water with perchlorate?
Currently, there is no federal or Arizona state drinking water standard (or Maximum Contaminant Levels – MCLs) for perchlorate (see Safe Drinking Water Act ). A provisional federal health-based guideline developed by the U.S. Environmental Protection Agency in 1992 suggested concentrations of perchlorate in water ranging from four to 18 ppb would not pose a risk to human health. Based upon available research, Arizona has established a protective health-based guidance level for drinking water of 11 ppb. Drinking water at or below this concentration is believed to be safe for consumption.
