Under the leadership of longtime director Rolf Halden, ASU’s Biodesign Center for Environmental Health Engineering has made numerous discoveries of ways environmental monitoring can protect and improve human health. The center’s work has led to a U.S. Food and Drug Administration ban on some harmful antimicrobials, common pesticides and perfluorinated chemicals, which has led to lowering human health risks with new technologies for wastewater and groundwater monitoring. In an interview, Halden, a professor in the School of Sustainable Engineering and the Built Environment, part of the Fulton Schools, talks about his skilled research team and issues revolving around research projects and balancing privacy rights with the need for public health assessments to protect at-risk populations.