Ph.D., Environmental Sciences and Engineering, University of North Carolina, 2009
M.S., Biological Systems Engineering, Virginia Tech, 2004
B.S., Biological Systems Engineering, Virginia Tech, 2002
August 2017 - present - Associate Professor, Biological Systems Engineering, Virginia Tech
Aug 2011 - July 2017 - Assistant Professor, Biological Systems Engineering, Virginia Tech
Sept 2009 - July 2011 - Research Assistant Professor, Biological Systems Engineering, Virginia Tech
April 2009 - Aug 2009 - Postdoctoral Research Associate, Environmental Sciences and Engineering, University of North Carolina
Selected Major Awards
- 2014 - College of Engineering Dean’s Award for Outstanding Assistant Professor
- 2012 - Virginia Tech Favorite Faculty Award
- 2012 - Alpha Epsilon Outstanding Faculty Award
- 2009 - University of North Carolina Graduate Education Advancement Board Dissertation Impact Award
- 2004 - ASABE Robert E. Stewart Engineering and Humanities Award
Courses Taught Last Five Years
- BSE 2004: Into to Biological Systems Engineering
- BSE 3334: NPS Assessment and Control
- BSE 5124: Advanced Topics in Watershed Management
- ENGE 1024 - Engineering Exploration
Other Teaching and Advising
I currently serve as a Senior Fellow in the Virginia Tech Honors Residential College, a new living-learning community for interdisciplinary undergraduates on campus. As a fellow, I participate in various social and academic activities to promote a sense of community. Within BSE specifically, I have been faculty advisor for the department chapter of Alpha Epsilon, the national honor society for agricultural and biological engineers, since Fall 2010. I have a particularly strong interest in interdisciplinary teaching that crosses traditional science-humanities boundaries; as a doctoral student I was part of a team that developed, taught, and assessed a philosophy course on “Cheating Death”. Results from this assessment were published in College Teaching in early 2011.
Growth of human populations and accompanying increased urbanization often introduces new contaminants to the environment or creates new pathways of human exposure to existing risks while simultaneously creating an ever-increasing demand for high quality natural resources, particularly clean water. In order to promote development while preserving public health, it is necessary to identify potential threats and engineer solutions to minimize exposure and risk. The broad goals of my research group are to: 1) identify (detect, quantify) waterborne agents that pose a threat to public health; 2) characterize environmental transport pathways that may result in human exposure to these contaminants; and 3) assess the relative risks of specific contaminants in order to prioritize interventions (remediation). In keeping with these goals, specific research group projects include: detection of human and non-human markers of fecal contamination in private drinking water supplies; identification of correlations between demographic characteristics and drinking water contamination by E. coli and/or heavy metals in rural communities; development of a stochastic model to estimate human risk associated with indicator bacteria impaired watersheds; assessment of the proximity of state-identified water quality impairments in Central Appalachia to mining and agricultural landuses; and characterization of patterns of sediment and water contamination by pollutants of human health concern in Stroubles Creek.
- Evaluating biological water quality impairments in Central Appalachian mining communities
- Linking private household drinking water supplies and rural health in Virginia
- Tracking fecal indicator bacteria within Stroubles Creek
Although I do not have an explicit extension appointment, I have developed a strong collaboration with Dr. Brian Benham’s Virginia Household Water Quality Program (VAHWQP), which seeks to provide low cost water quality testing and education on household system maintenance to Virginian families reliant on private drinking water supplies (i.e. wells, springs, and cisterns). Through this programming, homeowners with chronic water quality problems and few financial resources are introduced to the Southeast Rural community Assistance Project (SERCAP) which provides technical assistance, grants, and low interest loans to Virginian families to improve on-site water and wastewater systems.
- Linking private household drinking water supplies and rural health in Virginia
Selected Recent Publications
(* undergraduate student, ** graduate student, *** post-doc)
- Smyntek, P, L. Krometis, R. Wagner, S. Carvajal, T. Thompson, and W. Strosnider. 2017. Passive biological treatment of mine water to reduce conductivity: Potential designs, challenges, and research needs. Journal of Environmental Quality 46: 1-9.
- Pieper**, K., L. Krometis, D. Gallagher, B. Benham. 2016. Simultaneous influence of geology and system design on drinking water quality in private systems. Journal of Environmental Health 79(2): S1-S8.
- Pieper**, K., L. Krometis, M. Edwards. 2016. Quantifying lead leaching potential from plumbing exposed to aggressive waters. Journal of the American Water Works Association 108(9): DOI: 10.5942/jawwa.2016.108.0125.
- Liao**, H., L. Krometis, K. Kline. 2016. Coupling a continuous watershed-scale microbial fate and transport model with a stochastic dose-response model to estimate risk of illness in an urban watershed. Science of the Total Environment (551/552): 668-675.
- Benham, B., E. Ling, P. Zeigler, and L. Krometis. 2016. What's in Your Water?: Critical Evolution of the Virginia Household Water Quality Program and Virginia Master Well Owner Network. Journal of Human Sciences and Extension 4(1): 123-138.
- Pieper**, K., L. Krometis, D. Gallagher, B. Benham, M. Edwards. 2015. Profiling private water systems to identify patterns of waterborne lead exposure. Environmental Science and Technology 49(21): 12697-12704.
- Liao**, H., L. Krometis, K. Kline, C. Hession. 2015. Long-term impacts of bacteria-sediment interactions in watershed-scale microbial fate and transport modeling. Journal of Environmental Quality 44(5): 1483-1490.
- Cook**, N., E. Sarver, L. Krometis, J. Huang. 2015. Habitat and water quality as drivers of ecological system health in Central Appalachia. Ecological Engineering 84: 180-189.
- Pieper**, K., L. Krometis, D. Gallagher, B. Benham, M. Edwards. 2015. Incidence of waterborne lead in private drinking water systems in Virginia. Journal of Water and Health 13(3): 897-908.
- Liao**, H., L Krometis, C. Hession, R. Benitez, R. Sawyer, E. Schaeberg, E. von Wagoner, B. Badgley. 2015. Storm loadings of general and human-specific fecal indicators in an inland urban stream. Science of the Total Environment (530/531): 347-356.
- Collins, E., J. A. Ogejo, L. H. Krometis. 2015. The effects of temperature and duration of pasteurization on pathogen inactivation in anaerobically digested separated liquid dairy manure. Journal of Environmental Science and Health, Part A 50: 971-979.
- Cook**, N., L. Krometis, E. Sarver, J. Huang. 2015. Inorganic constituents of conductivity in five Central Appalachian watersheds with mixed source-driven pollutants. Ecological Engineering 82: 175-183.
- Cook**, N., E. Sarver, L. H. Krometis. 2015. Putting corporate social responsibility to work in mining communities. Resources 4:185-202.
- Liao**, H., L. Krometis, C. Hession, L. House, K. Kline, B. Badgley. 2014. Hydrometeorological and physicochemical drivers of fecal indicator bacteria in urban stream bottom sediments. Journal of Environmental Quality 43: 2034-2043.
- Smith**, T., L. H. Krometis, C. Hagedorn, B. Benham, A. H. Lawrence, E. Ling, P. Ziegler, S. W. Marmagas. 2014. Associations between fecal indicator bacteria prevalence and demographic data in private water supplies in Virginia.Journal of Water and Health. doi:10.2166/wh.2014.026.
- Fahrenfeld, N., K. Knowlton, L. Krometis, W. C. Hession, K. Xia, E. Lipscomb, K. Libuit*, B. Green*, A. Pruden. 2014. Manure application's effect on levels of antibiotic resistance genes and their attenuation rates in soil: Field-scale mass balance approach. Environmental Science and Technology 48(5): 2643-2650.
- Hathaway, J. M., L. H. Krometis, W. F. Hunt. 2014. Exploring Seasonality in E. coli/Fecal Coliform Ratios in Urban Watersheds. Journal of Irrigation and Drainage Engineering 140(4): 04014003.
- Coffey, R., B. Benham, L. Krometis, M. L. Wolfe, E. Cummins. 2013. Assessing the effects of climate change on waterborne microorganisms: Implications for EU and USA water policy. Human and Ecological Risk AssessmentDOI:10.1080/10807039.2013.802583.
- Krometis, L., R. T. Noble, G. W. Characklis, A. D. Blackwood, M. D. Sobsey. 2013. Assessment of E. coli partitioning behavior via both culture-based and qPCR methods. Water Science and Technology 68(6): 1359-1369.
- Allevi**, R. P., L. Krometis, C. Hagedorn, B. Benham, A. Lawrence, E. Ling, P. Ziegler. 2013. Quantitative analysis of microbial contamination in private drinking water supply systems. Journal of Water and Health 11(2): 244-255.
- Krometis, L., L. Chinery. 2013. Burden of disease from produce and seafood contamination. In: Environmental Burden of Disease Assessment: A Case Study in the United Arab Emirates. Springer, US. pp. 307-348.
- Characklis, G., L. Krometis, J. LoBuglio. 2013. Burden of disease from coastal water pollution. In: Environmental Burden of Disease Assessment: A Case Study in the United Arab Emirates . Springer, US. pp. 263-288.
- Davidson, C., L. H. Krometis, S. Al-Harthi, J. Macdonald-Gibson. 2012. Foodborne exposure to pesticides and methylmercury in the United Arab Emirates. Risk Analysis. 32: 381-394.
- Krometis, L.H., E. P. Clark, V. Gonzalez, M. E. Leslie. 2011. The “death” of disciplines: Development of a team-taught course to provide an interdisciplinary perspective for first-year students. College Teaching 59(2): 73-78.
- Benham, B., L. H. Krometis, G. Yagow, K. Klein, T. Dillaha. 2011. Watershed modeling for TMDLs. In: Microbial Source Tracking: Methods, Applications, and Case Studies. Springer, US. pp. 313-335.
- Krometis, L. H., G. W. Characklis, P. N. Drummey, M. D. Sobsey. 2010. Comparison of indicator organism and Salmonella spp. partitioning behavior in an urban watershed. Journal of Water and Health 8(1): 44-59.
- Krometis, L. H., G. W. Characklis, M. D. Sobsey. 2009. Identification of particle size classes inhibiting protozoan recovery from surface water samples via USEPA Method 1623. Applied and Environmental Microbiology 75(20): 6619-6621.
- Krometis, L. H., P. N. Drummey, G. W. Characklis, M. D. Sobsey. 2009. Impacts of microbial partitioning on wet detention pond effectiveness. Journal of Environmental Engineering 135(9): 758-767.
- Krometis, L.H., T. A. Dillaha, N. G. Love, S. Mostaghimi. 2009. Evaluation of a filtration/dispersion method for enumeration of particle-associated E. coli. Journal of Environmental Quality 38(3): 980-986.
- Cizek, A. R., G. W. Characklis, L. H. Krometis, J. A. Hayes, O. D. Simmons III, S. DiLonardo, K. A. Alderisiio, and M. D. Sobsey. 2008. Comparing the partitioning behavior of Giardia and Cryptosporidium with that of indicator organisms in stormwater runoff. Water Research 42(17): 4421-4438.
- Krometis, L. H., G. W. Characklis, M. J. Dilts, O. D. Simmons, III, C. A. Likirduplos, M. D. Sobsey. 2007. Intra-storm variability in microbial partitioning and microbial loading rates. Water Research 41(2): 506-516.
Selected Recent Funding
- Evaluation of potential biological treatment design options to reduce conductivity in mine discharges, Appalachian Research Initiative for Environmental Science (ARIES), $60,000, 8/15-6/16, Principal Investigator (co-PIs: W. Strosnider, R. Wagner, T. Thompson).
- Effective Strategies for Mitigating Antibiotic Resistance, National Institute of Food and Agriculture (USDA-NIFA), $2,250,000, 1/15-12/17, Co-Principal Investigator (PI: A. Pruden; Co-PIs: K. Knowlton, K. Xia, C. Hession, M. Ponder, T. Archibald, A. Vallotton).
- Use of fecal source-tracking techniques in groundwater quality management to reduce waterborne disease outbreaks, VT-ICTAS, $119,528, 7/14-7/16, Principal Investigator (co-PI: C. Hagedorn).
- Tazewell County Cancer Project, Tazewell County (Virginia) Board of Supervisors, $74,976, 7/14-7/15, Co-Principal Investigator (PI: K. Hosig, A. Smith; Co-PIs: S. Marmagas, J. Li, S. Wetzel).
- StREAM Lab Examination of Critical Watershed Processes Governing Dissemination of Agricultural Sources of Antibiotic Resistance, VT-ICTAS, $74,863, 7/12-6/13, Co-Principal Investigator (PI: A. Pruden; Co-PIs: K. Xia, K. Knowlton, C. Hession, Z. Liu).
- REU Site: Dynamics of Water and Societal Systems - An Interdisciplinary Research Program at the Virginia Tech StREAM Lab, National Science Foundation (NSF), $314,289, 3/12-3/15, Co-Principal Investigator (PI: W. C. Hession).
- Assessment of Biological Water Quality Impairments in Central Appalachian Mining Communities, Appalachian Research Initiative for Environmental Science (ARIES), $350,000, 10/11-6/15, Principal Investigator (co-PI: E. Sarver).
- What's in Your Water? Linking Rural Health and Household Drinking Water Safety, National Institute of Food and Agriculture (USDA-NIFA), $195,193, 8/11-7/12, Principal Investigator (co-PIs: B. Benham, P. Ziegler).