Emerging Disinfection Byproducts

Jun 6, 2019

Since the discovery of trihalomethanes (THMs) in drinking water in the early 1970s, disinfection byproducts (DBPs) have become a major driver for United States regulations. To date, more than 600 DBPs have been identified in drinking waters, but only 11 DBPs (4 THMs and 5  haloacetic acids [HAAs], bromate and chlorite) are currently regulated. However, new research shows that certain non-regulated DBPs are substantially (orders of magnitude) more toxic than the currently regulated DBPs. To develop information to inform regulatory agencies, assist utilities in preparing for future regulations, and protect public health, WRF initiated this Research Area in 2017.

 

Research Area Objectives

  1. Develop a better understanding and identify the factors that impact the formation of non-regulated DBPs during water treatment processes.
  2. Develop control strategies that minimize the formation of regulated DBPs while preventing the formation of non-regulated DBPs of potential health concern.
  3. Identify sources of bromide, iodide, and dissolved organic nitrogen (DON), and develop removal strategies.
  4. Provide guidance to utilities to comply with regulations while minimizing unintended consequences.

 

Research Area Project Timeline and Value

Occurrence Survey of Bromide and Iodide in Water Supplies

  • Timeline: 2017–2019
  • Total Project Value: $300,00
  • Research Area Objectives: Control Strategies, Precursor Control

The Impact of Pre-Oxidation and GAC Treatment on DBP Formation and Overall Toxicity in Drinking Water

  • Timeline: 2018–2020
  • Total Project Value: TBD
  • Research Area Objectives: N/A

Future Project: Bromide and Iodide Removal Technologies

  • Timeline: 2018-2019
  • Total Project Value: TBD
  • Research Area Objectives: Control Strategies, Precursor Control

Future Project: Brominated HAN and other DBPs Formation & Control

  • Timeline: 2018–2019
  • Total Project Value: TBD
  • Research Area Objectives: Control Strategies, Precursor Control

Future Project: Risk Reduction in DBP Exposure:  Past, Present, and Future

  • Timeline: 2019–2020
  • Total Project Value: TBD
  • Research Area Objectives: Occurrence, Control Strategies, Health Effects, Precursor Control

Future Project: Development of a Human Health Relevant DBP Bioassay in Real Drinking Waters

  • Timeline: 2019–2021
  • Total Project Value: TBD
  • Research Area Objectives: Occurrence, Health Effects 

Cumulative Project Value for Research Area: $300,000

 

Projects Funded Outside of the Research Area Program that meet a Research Area

No projects meet this requirement.

Project Status

Year Initiated: 2017

Year Completed: Ongoing

 

Advisory Committee Members

  • Steve Via, AWWA
  • Stuart Krasner, MWDSC
  • Tanju Karanfil, Clemson University
  • Zaid Chowdhury, Garver; Ben Stanford
  • Hazen & Sawyer; Scott Summers, CU-Boulder
  • Michael Hotaling, Newport News
  • Paul Westerhoff, ASU
  • Jonathan Pressman, EPA