Carnegie Mellon University

Sarah Fakhreddine

Sarah Fakhreddine

Assistant Professor, Civil and Environmental Engineering

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5000 Forbes Ave
Porter Hall 123C
Pittsburgh, PA 15213


Sarah Fakhreddine’s research focuses on developing water management solutions that holistically address water quantity and quality issues. She investigates fundamental hydrologic and biogeochemical processes that control the fate and transport of contaminants and nutrients in complex systems, including highly developed watersheds. She is particularly interested in understanding how climate-driven hydrologic shifts and active water management can alter the biogeochemical processes that control water quality. Her work applies laboratory, numerical modeling, and field-based approaches to translate the fundamental processes into actionable engineering approaches that protect water quality for human and ecosystem health. 

Sarah received her PhD in Environmental Earth System Science and MS in Environmental Engineering and Science from Stanford University. She completed a postdoctoral fellowship in the Sustainable Water Resources group and the University of Texas at Austin. She served as a fellow in the Climate Resilient Water Systems group at the Environmental Defense Fund. 


PhD Environmental Earth System Science, Stanford University
MS Environmental Engineering and Science, Stanford University
BS Civil Engineering, University of Texas at Austin


Research Group: CREST

Areas of Interest

  • Sustainable water resources management
  • Climate change impacts on water quality and water management 
  • Biogeochemical cycling of contaminants and nutrients
  • Hydrologic and reactive transport modeling


Scanlon, B., Fakhreddine, S., Rateb, A., Famiglietti, J., Gleeson, T., Grafton, Q., Jobbagy, E., Kebede, S., Konikow, L., Long, D., Mekonnen, M., Mukherjee, A., Pool, D., MacDonald, A., Shamsuduhha, M., Simmons, C., Sun, A., Taylor, R., Zheng, C. Global Water Resources and the Role of Groundwater in a Resilient Water Future. Nature Reviews Earth & Environment. 2023.

Scanlon, B., Fakhreddine, S., Reedy, R., Yang, Q., Malito, J., Drivers of Spatiotemporal Variability in Drinking Water Quality in the United States. Environmental Science and Technology. 2022.

Fakhreddine, S., Prommer, H., Scanlon, B.R., Ying S.C., and Nicot, J.P. Mobilization of Arsenic and Other Naturally Occurring Contaminants during Managed Aquifer Recharge: A Critical Review. Environmental Science and Technology. 2021.

Fakhreddine, S., Prommer, H., Gorelick, S. M., Dadakis, J., Fendorf, S. Controlling Arsenic Mobilization during Managed Aquifer Recharge: The Role of Sediment Heterogeneity. Environmental Science and Technology. 2020. 

Fakhreddine, S., Lee, J.H., Kitanidis, P., Fendorf, S., and Rolle, M. Imaging Geochemical Heterogeneities Using Inverse Reactive Transport Modeling: an Example Relevant for Characterizing Arsenic Mobilization and Distribution. Advances in Water Resources. 2016. 

Fakhreddine, S., Dittmar, J., Phipps, D., Dadakis, J., and Fendorf, S. Geochemical Triggers of Arsenic Mobilization During Managed Aquifer Recharge. Environmental Science and Technology. 2015.   [Media coverage by The Los Angeles Times ]