Research/Areas of Interest: environmental health; water, sanitation, and hygiene; household water treatment and safe storage; monitoring and evaluation; evidence-based policy development


  • Doctor of Philosophy, Tufts Univ/Engineering, USA, 2017
  • Master of Science, Tufts Univ/Engineering, USA, 2013
  • Bachelor of Science, Clarkson University, USA, 2011


Dr. String's research is primarily focused on closing evidence gaps for water, sanitation, and hygiene (WASH) programs in humanitarian and development contexts. She conducts both efficacy research in a laboratory setting and effectiveness evaluations with partners in the field. Her primary interests are in implementations of rural Water Safety Plan (WSP) programs, household safe water storage and container cleaning, and water treatment and surface disinfection implemented in outbreak response.

Previously she has evaluated community-managed WSPs in India, DRC, Fiji, and Vanuatu; worked with ceramic water filter (CWF) factories in Ecuador and evaluated efficacy of CWFs in the laboratory; and, evaluated community-level water treatment in various emergency contexts. Dr. String completed her B.S. at Clarkson University and her Ph.D. at Tufts University in mechanical engineering. In addition to her work at Tufts, she recently conducted research on surface disinfection with SARS-CoV-2 surrogates at a consulting laboratory.