1. US Environmental Protection Agency, N-Nitrosodimethylamine, CASRN 62-75-9, Integrated Risk Information System (IRIS) Substance File, 1993, http://www.epa.gov/iris/subst/0045.htm (accessed 30 January 2006).
2. California Department of Health Services, 2003, http://www.dhs.ca.gov/ps/ddwem/chemicals/ndma/history.htm (accessed 12 January 2004).
3. N-Nitrosodimethylamine (NDMA) as a Drinking Water Contaminant: A Review
4. NDMA Formation in Water and Wastewater
5. California Department of Health Services, 2002, http://www.dhs.ca.gov/ps/ddwem/chemicals/AL/actionlevels.htm (accessed 12 January 2004).