Drinking Water Disinfection Byproducts (DBPs) and Human
While drinking water disinfection has effectively prevented waterborne diseases, an unintended consequence is the generation of disinfection byproducts (DBPs). Epidemiological studies have consistently observed an association between consumption of chlorinated drinking water with an increased risk of bladder cancer. Out of the >600 DBPs identified, regulations focus on a few classes, such as
Disinfection Byproducts (DBPs) | The Water Research Foundation
Emerging Disinfection Byproducts Treatment Project #5005 Nitrosamine Precursors in Direct and Indirect Potable Reuse Water Research Investment $49,581 Completion Year 2025 Completed Project Highlights There is growing interest in nitrosamines, including N-nitrosodiethylamine (NDEA), and their precursors.
Stage 1 and Stage 2 Disinfectants and Disinfection Byproducts
The Stage 1 and Stage 2 Disinfectants and Disinfection Byproducts Rules (DBPRs) are part of the suite of Microbial and Disinfection Byproducts Rules (MDBPs). MDBPs are a series of interrelated regulations that address risks from microbial pathogens and disinfectants/disinfection byproducts.
Disinfection Byproducts—Chlorination of Drinking Water
Water systems add chlorine to drinking water to kill or inactivate harmful organisms in a process called “disinfection.”. During this process, chlorine also reacts with naturally occurring organic matter that may be present in drinking water. Chlorine disinfection byproducts (DBPs) can form during this chemical reaction.
DBPRs: What Does it Mean to You? | US EPA
EPA provides guidance documents to help states and public water systems (PWSs) implement the Stage 1 and Stage 2 Disinfectants and Disinfection Byproducts (DBP) Rules. The materials below can assist in complying with requirements of these Rules including updates to reflect the Stage 2 DBP Rule.
- What are disinfection by-products (DBPs)?
- Disinfection by-products (DBPs) are organic and inorganic compounds resulting from chemical reactions between organic and inorganic substances such as contaminates and chemical treatment disinfection agents, respectively, in water during water disinfection processes.
- What are global disinfection by-products (DBP) regulations?
- This study provides an overview of global disinfection by-products (DBP) regulations and lists current DBP standards of 166 countries with total trihalomethanes (TTHM), haloacetic acids (HAAs), and chlorine residual being the most widely regulated water quality parameters in the world.
- Are disinfection byproducts toxic?
- Disinfection byproducts (DBPs) formed during the disinfection of water have drawn significant public concern owing to their diverse toxicities. In this study, a database of 6310 DBPs reported since 1974 was constructed.
- What is a DBP in drinking water?
- DBPs are present in most drinking water supplies that have been subject to chlorination, chloramination, ozonation, or treatment with chlorine dioxide.
- What percentage of DBPs are verified by chemical standards?
- Only 10% of reported DBPs are verified by chemical standards. Acids are the largest category among all functional groups of reported DBPs. Structures of proposed DBPs were characterized based on adjusted indexes. Since trihalomethanes were discovered in 1974, disinfection by-products (DBPs) in drinking water have attracted extensive attention.
- Can pharmaceuticals be converted to DBPs?
- However, because pharmaceuticals and personal care products typically are microconstituents in water supplies (generally <1 μg/L), even their conversion to DBPs at high yield is unlikely to make significant inroads into the uncharacterized TOX.
