Project #1173

Microbial Risk Assessment Interface Tool and User Documentation Guide

Principal Investigator
Research Manager
Ms. Lola Olabode
EOA, Inc.
Microbes & Pathogens
Risk Assessment


Designed for water and wastewater utility engineers and managers with basic knowledge of quantitative microbial risk assessment. Users specify the pathogen that the input data correspond to, additional or incremental wastewater treatment that occurs prior to human exposure, and the pathogen's route of human exposure. The tool then recommends a static (individual-based) or dynamic (population-based) risk characterization methodology based on the input data and the user's model parameter selections. An estimate of the potential public health risk associated with the specific pathogen and exposure scenario is made via numerical simulation with results presented graphically. The Microbial Risk Assessment Interface Tool is used as an open source Mathcad worksheet. To purchase Mathcad, contact Gordie Clarke of Parametric Technology Corporation, at or 781-370-6704. Published by WERF. MRA interface tool, 134-page User Guide on CD, and online PDF. (2008)

Downloading this webtool constitutes acceptance of the terms outlined in our End User License Agreement.

Originally funded as WERF project 04-HHE-3.