Formation of Nitrosamines in Effluent-Impacted Drinking Waters

摘要

Treated wastewater discharges are a source of precursors for nitrosamines (e.g., N-nitrosodimethylamine [NDMA]). Drinking water treatment plants on effluent-impacted rivers or lakes may form NDMA if they chloraminate their water. The amount of treated wastewater in the drinking water supply can affect the level of NDMA that can form. However, prechlorination with a sufficient free-chlorine contact time can destroy or transform NDMA precursors, resulting in less NDMA upon chloramination.