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N-Nitrosodimethylamine

Disinfectant by-product

N-Nitrosodimethylamine

N-Nitrosodimethylamine (NDMA) is a chemical classified as a probable human carcinogen, commonly found as a contaminant in some industrial processes and contaminated food or pharmaceuticals. It is not a food ingredient but a toxic contaminant with significant health risks when ingested, inhaled, or absorbed.

Tracked contaminantUpdated Feb 22, 2025
Health score-5.0
-5Very bad5

Water guidelines

Legal limit
7e-10 ppm
Health guideline
3e-9 ppm

Food and supplement guidelines

Legal limit
Not specified
Health guideline
Not specified

Risks

Carcinogenicity, liver toxicity, genotoxicity, mutagenicity, possible cancer risk at very low exposure levels

Benefits

None

References