Warish Ahmed, Mary E Schoen, Jeffrey Soller, Joanna Ciol Harrison, Kerry A Hamilton, Metasebia Gebrwold, Stuart L Simpson, Sudhi Payyappat, Michele Cassidy, Nathan Harrison, Colin Besley
This study establishes site-specific risk-based thresholds (RBTs) for sewage-associated markers, including Bacteroides HF183 (HF183), Lachnospiraceae Lachno3 (Lachno3), cross-assembly phage (CrAssphage), and pepper mild mottle virus (PMMoV), utilizing quantitative microbial risk assessment (QMRA) for recreational estuarine waters (EW). The QMRA model simulates health risks from ingestion of EW contaminated with untreated sewage. RBTs were estimated considering site-specific decay rates and concentrations of markers and pathogen (human norovirus; HNoV), aiding in the identification of high-risk days during the bathing season...
April 12, 2024: Science of the Total Environment