Alexandria Boehm's primary research areas are coastal water quality and sanitation. The work on coastal water quality is focused on understanding the sources, transformation, transport, and ecology of biocolloids. This knowledge is crucial to directing new policies, and management and engineering practices that protect human and ecosystem health along the coastal margin. Research is focused on key problems in developed and developing countries. The goal is to design and test effective interventions and technologies for reducing the burden of infectious disease.