Assessing Inhalation Exposures Associated with Contamination Events in Water Distribution Systems
Abstract
When a water distribution system (WDS) is contaminated, short-term inhalation exposures to airborne contaminants could occur as the result of domestic water use. The most important domestic sources of such exposures are likely to be showering and the use of aerosol-producing humidifiers, i.e., ultrasonic and impeller (cool-mist) units. A framework is presented for assessing the potential effects of short-term, system-wide inhalation exposures that could result from such activities during a contamination event. This framework utilizes available statistical models for showering frequency and duration, available exposure models for showering and humidifier use, and experimental results on both aerosol generation and the volatilization of chemicals during showering. New models for the times when showering occurs are developed using time-use data for the United States. Given a lack of similar models for how humidifiers are used, or the information needed to develop them, an analysis of the sensitivity of results to assumptions concerning humidifier use is presented. The framework is applied using network models for three actual WDSs. Simple models are developed for estimating upper bounds on the potential effects of system-wide inhalation exposures associated with showering and humidifier use. From a system-wide, population perspective, showering could result in significant inhalation doses ofmore »
- Authors:
-
- Argonne National Lab. (ANL), Argonne, IL (United States). Environmental Science Division
- US Environmental Protection Agency (EPA), Cincinnati, OH (United States). National Homeland Security Research Center
- Argonne National Lab. (ANL), Argonne, IL (United States). Global Security Sciences Division
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE; USEPA
- OSTI Identifier:
- 1336237
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- PLoS ONE
- Additional Journal Information:
- Journal Volume: 11; Journal Issue: 12; Journal ID: ISSN 1932-6203
- Publisher:
- Public Library of Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES
Citation Formats
Davis, Michael J., Janke, Robert, and Taxon, Thomas N. Assessing Inhalation Exposures Associated with Contamination Events in Water Distribution Systems. United States: N. p., 2016.
Web. doi:10.1371/journal.pone.0168051.
Davis, Michael J., Janke, Robert, & Taxon, Thomas N. Assessing Inhalation Exposures Associated with Contamination Events in Water Distribution Systems. United States. https://doi.org/10.1371/journal.pone.0168051
Davis, Michael J., Janke, Robert, and Taxon, Thomas N. Thu .
"Assessing Inhalation Exposures Associated with Contamination Events in Water Distribution Systems". United States. https://doi.org/10.1371/journal.pone.0168051. https://www.osti.gov/servlets/purl/1336237.
@article{osti_1336237,
title = {Assessing Inhalation Exposures Associated with Contamination Events in Water Distribution Systems},
author = {Davis, Michael J. and Janke, Robert and Taxon, Thomas N.},
abstractNote = {When a water distribution system (WDS) is contaminated, short-term inhalation exposures to airborne contaminants could occur as the result of domestic water use. The most important domestic sources of such exposures are likely to be showering and the use of aerosol-producing humidifiers, i.e., ultrasonic and impeller (cool-mist) units. A framework is presented for assessing the potential effects of short-term, system-wide inhalation exposures that could result from such activities during a contamination event. This framework utilizes available statistical models for showering frequency and duration, available exposure models for showering and humidifier use, and experimental results on both aerosol generation and the volatilization of chemicals during showering. New models for the times when showering occurs are developed using time-use data for the United States. Given a lack of similar models for how humidifiers are used, or the information needed to develop them, an analysis of the sensitivity of results to assumptions concerning humidifier use is presented. The framework is applied using network models for three actual WDSs. Simple models are developed for estimating upper bounds on the potential effects of system-wide inhalation exposures associated with showering and humidifier use. From a system-wide, population perspective, showering could result in significant inhalation doses of volatile chemical contaminants, and humidifier use could result in significant inhalation doses of microbial contaminants during a contamination event. From a system-wide perspective, showering is unlikely to be associated with significant doses of microbial contaminants. In conclusion, given the potential importance of humidifiers as a source of airborne contaminants during a contamination event, an improved understanding of the nature of humidifier use is warranted.},
doi = {10.1371/journal.pone.0168051},
journal = {PLoS ONE},
number = 12,
volume = 11,
place = {United States},
year = {Thu Dec 08 00:00:00 EST 2016},
month = {Thu Dec 08 00:00:00 EST 2016}
}
Web of Science
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