A risk-based evaluation of onsite, non-potable reuse systems developed in compliance with conventional water quality measures.

ABSTRACT: Water quality standards (WQSs) based on water quality measures (e.g., fecal indicator bacteria (FIB)) have been used by regulatory agencies to assess onsite, non-potable water reuse systems. A risk-based approach, based on quantitative microbial risk assessment, was developed to define treatment requirements that achieve benchmark levels of risk. This work compared these approaches using the predicted annual infection risks for non-potable reuse systems that comply with WQSs along with the benchmark risk levels achieved by the risk-based systems. The systems include a recirculating synthetic sand filter or an aerobic membrane bioreactor (MBR) combined with disinfection. The greywater MBR system had predicted risks in the range of the selected benchmark levels. However, wastewater reuse wit

SUBMITTER: Schoen ME 

PROVIDER: S-EPMC7503949 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature