In Europe, the Drinking Water Inspectorate of
England and Wales requires the monitoring of N-nitrosodimethylamine
at 1 ng/L and has set and action level for
these compounds of 10 ng/L, while in Germany the permissible
health-based values for N-nitrosodimethylamine and Nnitrosomorpholine
are equal to 10 ng/L (Boyd et al., 2011).