Enteric pathogen reduction targets for onsite non-potable water systems: A critical evaluation.

ABSTRACT: Onsite non-potable water systems (ONWS) collect and treat local source waters for non-potable end uses such as toilet flushing and irrigation. Quantitative microbial risk assessment (QMRA) has been used to set pathogen log₁₀-reduction targets (LRTs) for ONWS to achieve the risk benchmark of 10^-4 infections per person per year (ppy) in a series of two efforts completed in 2017 and 2021. In this work, we compare and synthesize the ONWS LRT efforts to inform the selection of pathogen LRTs. For onsite wastewater, greywater, and stormwater, LRTs for human enteric viruses and parasitic protozoa were within 1.5-log₁₀ units between 2017 and 2021 efforts, despite differences in approaches used to characterize pathogens in these waters. For onsite wastewater and grey

SUBMITTER: Jahne MA 

PROVIDER: S-EPMC10084472 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature