Health Risk Assessment, Surveillance & Management

Microbial Risk Assessment for Unrestricted Wastewater Reuse During Army Deployments

Last Updated: July 27, 2018
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Public Health Information Paper (PHIP) 39-01-0514 evaluates microbial health risks associated with wastewater reuse in deployed settings.  The assessment  uses Escherichia coli concentration as a measure of risk from exposure to microbial pathogens that might be found in treated wastewater.  The risk assessment provides background on the need for considering treated wastewater reuse, explains why E. coli was selected to measure microbial risk, and provides details of the risk assessment and associated scientific uncertainties.  Risk-based water concentrations (RBWCs) were developed for E. coli for full-body contact activities (e.g., showering) under various exposure assumptions.  The report provides information and guidance for setting a microbial standard for unrestricted reuse of treated wastewater using currently fielded measurement equipment.  The supplements provide additional detail on interpreting the risk estimates.

PHIP-39-01-0514, Microbial Risk Assessment for Unrestricted Wastewater Reuse During Army Deployments, May 2014

Supplement A, Enhanced explanation of daily and annual population risks of gastrointestinal illness, December 2014

Supplement B, Gastrointestinal illness impacts on populations of specific sizes, December 2014

Supplement C, Prediction of individual annual risk of gastrointestinal illness, December 2014

For more information, contact the Environmental Health Risk Assessment Division

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