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Microbiological and Chemical Exposure Assessment Staff

Kevin Oshima

Title: Supervisory Microbiologist

EPA Division: Microbiological and Chemical Exposure Assessment Research Division

EPA Branch: Microbial Exposure Research Branch

The Microbial Exposure Research Branch is involved in research to develop methods to identify waterborne microbial agents, measure their occurrence and assess human exposure from waterborne pathogens in environmental and drinking waters. Examples of research areas include the development of rapid molecular methods to detect fecal indicator bacteria and bacterial pathogens, studies on the fate and transport of fecal indicators and pathogens in environmental waters, development of detection methods for microbial contaminant candidate list for drinking water and the development of saliva-based methods to detect the exposure of waterborne pathogens in humans. Research in the Branch has also focused on the use of animal models to characterize the virulence of waterborne pathogens. The Branch also has been involved in the development of rapid molecular methods for detecting molds in indoor environments and in studies examining the linkages between mold and asthma.


  • Ph.D.Fisheries Science, University of Washington, 1991
  • M.S. Fisheries Science, University of University of Washington, 1987
  • B.S. Fisheries Science, University of Washington, 1983

Professional Experience:

  • Supervisory Biologist, USEPA, ORD, NERL-MCEARD, Cincinnati, OH 2005-present
  • Associate Professor Biology, New Mexico State University, Las Cruces, NM 1996
  • 2005 Staff Scientist/Visiting Scientist at the Centers for Disease Control and Prevention, Pall Corporation, Atlanta, GA 1992-1996.

Professional Societies and Affiliations:

  • American Society for Microbiology

Select Awards and Honors:

  • USEPA, Office of Water, Achievement in Science and Technology Award, 2010
  • USEPA NERL Special Recognition Award, 2010
  • USEPA ORD Bronze medal 2008

Select Presentations:

  • Oshima, K. The Use of Rapid qPCR Methods for the Detection and Quantification of Fecal Indicator Bacteria for Boqueron, Puerto Rico. Fourth Congress on the State of the Environment, CECIA-IAUPR Inter American University, Puerto Rico, February 16-17, 2012.
  • Oshima, K. The Use of Rapid qPCR Methods for the Detection and Quantification of Fecal Indicator Bacteria for Assessing Recreational Water Quality, The 9th UNU & GIST Joint Programme Symposium on Urban Water Quality – Challenges and Emerging Issues for Sustainable Cities, Gwangju, Korea, October 16-18, 2011.
  • Oshima, K. Analytical Methods: Summary of qPCR Research Findings, Stakeholder Meeting on EPA’s Development of New or Revised Recreational Water Quality Criteria, New Orleans, June 14-15, 2011.
  • Oshima, K. USEPA Approach for the Detection and Quantification of Enterococcus By Quantitative PCR, Standardization and International Evaluation of Molecular Methods Used for Detection of Waterborne Pathogens, Global Water Research Coalition, Paris, France, December 1-2, 2008.
  • Oshima, K. Characterization and Optimization of Ultrafitration Processes for the Efficient Recovery of Waterborne Pathogens, USEPA Large Volume Sample Preparation for Waterborne Pathogens Workshop, Cincinnati, OH, April 4-5, 2006.

Published & Presented Research (1999-Present)

Contact Info:

Kevin Oshima
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: 513 569-7476

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