Raina M. Maier Ph.D.，RutgersUniversity，1988. Currently，Professor of Environmental Microbiology and Associate Director of the University of Arizona NIEHS Superfund Basic Research Program. Dr. Maier's research is focused on developing a basic understanding of how to evaluate and control microbial activity in disturbed and extreme environments ranging from mine tailings to cave environments to the Atacama Desert，Chile.She is known for using an interdisciplinary approach to study the interaction microorganisms with both biotic and the abiotic components of their environment. Dr. Maier has earned an international reputation for her work on microbial surfactants (biosurfactants) a class of fascinating secondary metabolites with possible uses in remediation，biological control，surface coatings，and the cosmetic and pharmaceutical industries

lan L. Pepper Ph.D.，The Ohio State University，1975. Currently，Professor of Environmental Microbiology.Dr. Pepper's diverse research interests are reflected in the fact that he is Fellow of The American Association for the Advancement of Science，The American Academy of Microbiology，the Soil Science Society of America，and the American Society of Agronomy. He is also Director of the National Science Foundation Water Quality Center at the University of Arizona. Dr. Pepper has been active in the area of soil molecular ecology as well as waste utilization including biosolids and effluent reuse. More recently he pursues research on real-time monitoring of microbial contaminants in potable water，and “smart water distribution systems.”

Charles P. Gerba Ph.D.，University of Miami，1973. Currently，Professor of Microbiology. Dr.Gerba is a Fellow of the American Academy of Microbiology. He is receipent of the A. P. Black Award from the American Water Works Assoication for outstanding contributions to Water Science，and the McKee Award from the Water Enviromnent Federation for outstanding contributions to groundwater protection. He has an international reputation for his methodologies for pathogen detection in water and food，pathogen occurrence in households，and risk assessment.