The maximum level of a contaminant in drinking water at which no known or anticipated adverse affect on human health would occur, and that includes an adequate margin of safety. Recommended levels are nonenforceable health goals. Also see Maximum Contaminant Level (MCL).
RECOMMENDED MAXIMUM CONTAMINANT LEVEL (RMCL)
Meaning of RECOMMENDED MAXIMUM CONTAMINANT LEVEL (RMCL) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012