My research interests are in environmental health microbiology, with a focus on water quality.  I am developing novel tools and technologies to detect and track pathogens in water.  I am also interested in evaluating impacts of non-point source pollution, and in evaluating the manner in which land-based activities (e.g. development, storm water management or agricultural practices) can affect human exposure to microbial contaminants.  Overall, this research is leading to a greater understanding of how environmental conditions can affect human health, and how humans themselves influence this process.

Current areas of research include:

  • Developing tools and technologies to measure microbial contaminants in water
  • Studying recreational waters impacted by nonpoint source pollution
  • Evaluating relationships between land use and water quality
  • Modeling how storm events affect pathogen loading into waterbodies
  • Characterizing the emergence and dissemination of antibiotic resistant bacteria, particularly MRSA

stewart labA typical day in the Stewart Lab, with all students demonstrating exemplary lab safety.

Recent News:

  • Welcome new graduate students Collin, Brianna, and Billy!
  • Maya Nadimpalli (PhD, in progress) recently presented her research at a departmental seminar.
  • Billy Gerhard (MSPH, in progress) was recently awarded the Sherpa Fellowship for research he conducted as an undergraduate evaluating the effectiveness of new drinking water infrastructure systems on the Galapagos Island of San Cristobal. Billy will continue this project for his graduate research,