What are "disinfection by-products" (DBPs)?

Disinfection by-products (DBPs) are chemical compounds that are formed when disinfectants, such as chlorine, react with organic matter present in the water during the disinfection process. This reaction can occur in both drinking water treatment and wastewater treatment processes, leading to the formation of various DBPs, some of which may pose health risks to humans. Understanding DBPs is crucial for water quality management as regulatory agencies monitor them due to their potential health effects, including links to certain types of cancer and other adverse health outcomes.

The formation of DBPs is an important consideration in the disinfection process because, while disinfectants are necessary to kill pathogens and ensure water safety, their interaction with natural organic matter can lead to these unintended contaminants. This highlights the need for careful control and monitoring of both disinfectants used and the organic material present in the water source.

Recognizing the nature of DBPs is essential in the field of water treatment, as it influences treatment choices, operational protocols, and compliance with health regulations regarding water quality.