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Microbiological and Chemical Exposure Assessment Staff

Dennis Lye

Title: Research Microbiologist

EPA Division: Microbiological and Chemical Exposure Assessment Research Division

EPA Branch: Microbial Exposure Research Branch

Research involves the following areas:

  • Occurrence and persistence of opportunistic pathogens in drinking water systems and water sources.
  • Development of animal-based methods for assessing risk analysis of microorganisms exposed to immunocompromised populations.
  • Monitoring and assessment of sustainable reclaimed water resources for both nonpotable and potable usage.


  • Ph.D. Bacteriology, Arizona State University, 1980
  • M.S. Bacteriology, Iowa State University, 1975
  • B.S. Agriculture, University of Wyoming, 1973

Professional Experience:

  • Research Microbiologist, USEPA, ORD, NERL-MCEARD, Cincinnati, OH 1986-present
  • Associate Professor, Department of Biological Sciences, Highland Heights, KY 1984-2005

Professional Societies and Affiliations:

  • American Society for Microbiology
  • International Rainwater Harvesting Association
  • American Rainwater Catchment Systems Association

Select Awards and Honors:

  • 2009 Level III STAA award

Select Presentations:

  • Lye. D. 2012. Microbial Water Quality Associated with Rooftop Rainwater Harvesting – Implications for Risk Management. American Water Works Association Sustainability Conference, Portland, Oregon
  • Lye, D. 2011. Gastrointestinal Colonization Rates of Environmental Drinking Water isolates and Human Clinical Isolates of Aeromonas using a Mouse Model. 10th International Symposium on Aeromonas and Plesiomonas, Galveston, Texas
  • Armah A. de la Cruz, D. J. Lye, W. Shuster. 2010. A Pilot Study to Evaluate Roof-Collected Rain Barrel Water Quality. AOAC annual meeting, Orlando, Florida

Published & Presented Research (1999-Present)

Contact Info:

Dennis Lye
Microbiological and Chemical Exposure Assessment Research Division
National Exposure Research Laboratory
Office of Research and Development
U.S. Environmental Protection Agency
27 W. Martin Luther King Jr. Drive
Cincinnati, OH 45268
Telephone: 513-569-7870

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