Dr. Mark LeChevallier is the principal and manager of Dr. Water Consulting, a part-time consulting business, after retiring from American Water at the beginning of 2018. Dr. LeChevallier received his Bachelor of Science and Masters degrees in Microbiology from Oregon State University, and his Ph.D. in Microbiology from Montana State University. Dr. LeChevallier has authored over 300 research papers and has received numerous awards for outstanding contributions to the science of water treatment. He was the recipient of the George Warren Fuller award in 1997 from the New Jersey section of the American Water Works Association, the Abel Wolman Award in 2012 and the A.P. Black award for research in 2015, both from the American Water Works Association. Dr. LeChevallier currently serves as a member of the Water Science Technology Board of the National Academies of Science, Engineering and Medicine, and was appointed in 2019 to the Drinking Water Subcommittee, and in 2021 as a charter member of the USEPA Science Advisory Board. He is a fellow of the American Academy of Microbiology.
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Mark W. LeChevallier, Ph.D.
Dr. Water Consulting, LLC
4838 South Coors Court
Morrison, CO 80465
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LeChevallier, M.W. 2021. Guidance on Developing a Legionella pneumophila Monitoring Program for Utility Distribution Systems. Health Education and Public Health. 4(1): 369 - doi: 10.31488 /HEPH.158
LeChevallier, M.W. 2020. Managing Legionella pneumophila in Water Systems. JAWWA. 112(2): 11-23. https://doi.org/10.1002/awwa.1444
Wen J., M.W. LeChevallier, W. Tao. 2020. Nitrification kinetics and microbial communities of activated sludge as a full-scale membrane bioreactor plant transitioned to low dissolved oxygen operation. Journal of Cleaner Production 252 (2020) 119872. https://doi.org/10.1016/j.jclepro.2019.119872
LeChevallier M.W., T.J. Mansfield, J. MacDonald Gibson. 2019. Protecting wastewater workers from disease risks: Personal protective equipment guidelines. Water Environment Research, Sep 27 2019, 1–10. https://doi.org/10.1002/wer.1249
LeChevallier MW. 2019. Occurrence of culturable Legionella pneumophila in drinking water distribution systems. AWWA Wat Sci. 2019;e1139. http://dx.doi.org/10.1002/aws2.1139
Hull, N.M, F. Ling, A.J. Pinto, M. Albertsen, H.G. Jang, .P-Y. Hong, K.T. Konstantinidis, M. LeChevallier, R.R. Colwell, and W.-T. Liu. 2019. Drinking Water Microbiome Project: Is it Time? Trends in Microbiology. April 25, 2019. https://doi.org/10.1016/j.tim.2019.03.011.
Cotruvo, JA, D. Purkiss, Stan Hazan, F.P. S. Iii, P. DeMarco, M. LeChevallier. 2019. Managing Legionella and Other Pathogenic Microorganisms in Building Water Systems. JAWWA. 111(2): 54-59. https://doi.org/10.1002/awwa.1236
LeChevallier MW. 2019. Monitoring distribution systems for Legionella pneumophila using Legiolert. AWWA Wat Sci. 2019;e1122. https://doi.org/10.1002/aws2.1122.
Hamilton, K.A., M.T. Hamilton, W. Johnson, P. Jjemba, Z. Bukhari, M. LeChevallier, C.N. Haas, P.L. Gurian. 2018. Risk-based critical levels of Legionella pneumophila for 2 indoor water uses. Environmental Science & Technology. 2019 53 (8), 4528-4541. DOI: 10.1021/acs.est.8b03000
Hamilton, K.A., M.T. Hamilton, W. Johnson, P. Jjemba, Z. Bukhari, M. LeChevallier, C.N. Haas. 2018. Health risks from exposure to Legionella in reclaimed water aerosols: Toilet flushing, spray irrigation, and cooling towers. Water Research. 134: 261-279. https://doi.org/10.1016/j.watres.2017.12.022
Johnson, W.J., P.K. Jjemba, Z. Bukhari, LeChevallier, M.W. 2016. Occurrence of Legionella in Non-Potable Reclaimed Water. JAWWA 110(3): in press. https://www.awwa.org/publications/journal-awwa/abstract/articleid/68666658.aspx
Schneider, O.D. and M.W. LeChevallier. 2017. A Cost-Effective Treatment Process for Producing High-Quality Drinking Water. JAWWA. 109(3): 39-47. DOI: https://dx.doi.org/10.5942/jawwa.2017.109.0026
Weinrich, L., M. LeChevallier and C. N. Haas. 2016. Contribution of assimilable organic carbon to biological fouling in seawater reverse osmosis membrane treatment. Water Research 101: 203-213. http://dx.doi.org/10.1016/j.watres.2016.05.075
Connell, M., A. Stenson, L. Weinrich, M. LeChevallier, S.L. Boyd, R.R. Ghosal, R. Dey, and A.J. Whelton. 2016. PEX and PP Water Pipes: Assimilable Carbon, Chemicals, and Odors. JAWWA, 108(4): E192-E204. http://dx.doi.org/10.5942/jawwa.2016.108.0016
Ling, F., C. Hwang, M.W. LeChevallier, Gary L Andersen, and W-T Liu. 2015. Core-satellite populations and seasonality of water meter biofilms in a metropolitan drinking water distribution system. The ISME Journal, 7 August 2015; pp1-14. doi:10.1038/ismej.2015.136.
Zhang, Y., P-Y. Hong, M.W. LeChevallier and W-T. Liu. 2015. Phenotypic and phylogenetic identification of coliform bacteria obtained from 12 USEPA approved coliform methods. Appl. Environ. Microbiol. 81(15): 6012–6023. doi:10.1128/AEM.01510-15.
Jjemba, P.K., W. Johnson, Z. Bukhari and M. W. LeChevallier. 2015. Occurrence and Control of Legionella in Recycled Water Systems. Pathogens 4: 470-502; doi:10.3390/pathogens4030470 .
Wen, J., Y. Liu, Y. Tu and M.W. LeChevallier. 2015. Energy and chemical efficient nitrogen removal at a full-scale MBR water reuse facility. AIMS Environmental Science 2(1): 42-55. doi:10.3934/environsci.2015.1.42, http://www.aimspress.com/article/10.3934/environsci.2015.1.42
Yang, J., O.D. Schneider, P.K. Jjemba, and M.W. LeChevallier. 2015. Microbial Risk Modeling for Main Breaks. JAWWA 107 (2): E97-E108. DOI: http://dx.doi.org/10.5942/jawwa.2015.107.0010
See the CV file for a full list of publications