Screening health risk assessment of micropullutants for indirect potable reuse schemes: A three-tiered approach

Rodriguez, C., Cook, A., Van Buynder, P., Devine, B. and Weinstein, P. (2007) Screening health risk assessment of micropullutants for indirect potable reuse schemes: A three-tiered approach. Water Science and Technology, 56 11: 35-42. doi:10.2166/wst.2007.831


Author Rodriguez, C.
Cook, A.
Van Buynder, P.
Devine, B.
Weinstein, P.
Title Screening health risk assessment of micropullutants for indirect potable reuse schemes: A three-tiered approach
Journal name Water Science and Technology   Check publisher's open access policy
ISSN 0273-1223
Publication date 2007-01-01
Sub-type Article (original research)
DOI 10.2166/wst.2007.831
Volume 56
Issue 11
Start page 35
End page 42
Total pages 8
Place of publication London, U.K.
Publisher IWA Publishing/Portland Press
Language eng
Subject 1117 Public Health and Health Services
11 Medical and Health Sciences
Abstract Indirect potable reuse schemes are an important consideration in the sustainable management of scarce water resources. However, communities still hold real concerns about the potential health risks of micropullutants in recycled water entering their potable water supply. Microfiltration or ultrafiltration followed by reverse osmosis is currently the standard treatment technology for potable use of recycled water. Nevertheless, membranes are not 100% efficient in the removal of trace organic contaminants and the potential health risks of these micropullutants need to be assessed. The aim of this paper is to present a three-tiered approach for the preliminary assessment of micropullutants in recycled water. A risk quotient is calculated by comparing measured concentrations against benchmark values. Tier 1 corresponds to regulated chemicals; the maximum contaminant level in drinking water is used as benchmark value. Tier 2 corresponds to unregulated chemicals with toxicity information; slope factors or risk specific doses are used to calculate benchmark values. Tier 3 corresponds to unregulated chemicals without toxicity information. The “Threshold of Toxicological Concern” concept is used to calculate benchmark values. The characterization of chemicals of concern following reverse osmosis in a water reclamation plant and the application of the three-tiered approach for the evaluation of the potential health risks is presented.
Keyword Chemicals of concern
Recycled water
Toxicology
Water quality
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Public Health Publications
 
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Created: Fri, 29 Aug 2008, 04:14:40 EST