Disinfection Byproducts (DBPs)
The use of strong oxidants to disinfect water has virtually eliminated waterborne diseases like typhoid, cholera, and dysentery in developed countries. However, research has shown that chlorine interacts with natural organic matter present in water supplies to form regulated and non-regulated disinfection byproducts (DBPs).
To minimize the formation of regulated DBPs and comply with existing regulations, water utilities have increasingly been moving away from chlorine to use alternative disinfectants like chloramine, or installing more advanced and costly treatment processes, such as ozone or granular activated carbon to remove DBP precursors. However, while reducing the formation of halogenated DBPs, alternative oxidants have been shown to favor the formation of other DBPs (e.g., ozone producing bromate and halonitromethanes, and chloramines producing N-nitrosodimethylamine and iodinated DBPs).
NDMA in Drinking Water
This video looks at the impact of complex nitrosamines—specifically N-nitrosodimethylamine (NDMA)—in our water supplies and whether or not they should be concerns to water utilities throughout the United States.