What is the infant health advisory limit for nitrate? Is it safe for adults?
The infant health advisory or MCL (maximum contaminant level) established by the Environmental Protection Agency is 10mg/L (as N) or 45mg/L (as NO3). An infant consuming high levels of nitrate may develop methemoglobinemia, also referred to as blue baby syndrome. Ingesting high levels of nitrates will not cause methemoglobinemia in adults.
