The U.S. Environmental Protection Agency (EPA), as part of its Science to Achieve Results (STAR) program, is seeking applications proposing to conduct research on existing and novel surrogates for the detection and monitoring of the presence of human enteric viral pathogens and surrogates in water reuse applications, where wastewater is the source water. Additionally, proposals should aim to identify quantitative reductions of infectious viral pathogens and surrogates across unit treatment processes and full treatment trains to improve viral risk assessments; viral log reduction targets; and unit process credits for water reuse applications.