Meaning, Term, and Glossary Definition - What is NDMA?

NDMA stands for N-Nitrosodimethylamine (C2H6N2O) and is a semi-volatile organic chemical that is highly toxic and a suspected human carcinogen. The EPA has determined that the maximum admissible concentration of NDMA in drinking water is 7 ng L-1

NDMA is an industrial by-product or waste product of several industrial processes. It first came to attention as a groundwater contaminant in California in 1998 and 1999 at several sites that produced rocket fuel. NDMA's contamination of drinking water is of particular concern due to the minute concentrations at which it is harmful, the difficulty in detecting it at these concentrations, and to the difficulty in removing it from drinking water. It does not readily biodegrade, adsorb, or volatilize. As such, it cannot be removed by activated carbon and travels easily through soils.

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