Enteric Pathogen Treatment Requirements for Nonpotable Water Reuse Despite Limited Exposure Data.

ABSTRACT: Exposure factors (e.g., ingestion volume and frequency) are required to establish risk-based treatment requirements (i.e., log₁₀ reduction targets (LRTs)) for enteric pathogens using quantitative microbial risk assessment (QMRA). However, data to Wastewater characterize nonpotable exposure factors are sparse. We calculated graywater and wastewater nonpotable LRTs (corresponding to 10^-4 infections per person per year) for uses missing detailed exposure data (including showering and decorative fountain) and across a range of exposure factors. The LRTs decreased linearly toward zero as the log₁₀ transformed volume or the frequency of reuse decreased. When nonroutine exposure was included, representing either accidental ingestion from misuse or cross-connection

SUBMITTER: Schoen ME 

PROVIDER: S-EPMC7784632 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature