| Text | 429095 2020 10.1016/j.wroa.2020.100062 Scopus 2 s2.0 85089851166 ISI Web of Science WOS WOS 000572578700001 Reclaimed water quality Managed aquifer recharge E. coli O157 H7 and O26 H11 Dose infection model QMRA Application of QMRA to MAR operations for safe agricultural water reuses in coastal areas Masciopinto C.; Vurro M.; Lorusso N.; Santoro D.; Haas C.N. Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Via F. De Blasio 5, Bari, 70132, Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, via F. De Blasio 5, 70132, Bari, Italia, , , Italy; Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Via F. De Blasio 5, Bari, 70132, Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, via F. De Blasio 5, 70132, Bari, Italia, , , Italy; Architectural and Environmental Engineering, Drexel University, Drexel, 3141 Chestnut Street, 251 Curtis Hall, Philadelphia, PA, 19104, Architectural and Environmental Engineering, Drexel University, Drexel, 3141 Chestnut Street, 251 Curtis Hall, Philadelphia, PA, 19104, USA, , United States; USP Techonologies, 3020 Gore Rd, London, ON, N5V 4T7, USP Techonologies, 3020 Gore Rd, London, ON N5V 4T7, Canada, , Canada A pathogenic Escherichia coli E.coli O157 H7 and O26 H11 dose response model was set up for a quantitative microbial risk assessment QMRA of the waterborne diseases associated with managed aquifer recharge MAR practices in semiarid regions. The MAR facility at Forcatella Southern Italy was selected for the QMRA application. The target counts of pathogens incidentally exposed to hosts by eating contaminated raw crops or while bathing at beaches of the coastal area were determined by applying the Monte Carlo Markov Chain MCMC Bayesian method to the water sampling results. The MCMC provided the most probable pathogen count reaching the target and allowed for the minimization of the number of water samplings, and hence, reducing the associated costs. The sampling stations along the coast were positioned based on the results of a groundwater flow and pathogen transport model, which highlighted the preferential flow pathways of the transported E. coli in the fractured coastal aquifer. QMRA indicated tolerable <10 DALY health risks for bathing at beaches and irrigation with wastewater, with 0.4 infectious diseases per year 11.4% probability of occurrence associated with the reuse of reclaimed water via soil irrigation even though exceeding the E. coli regulation limit of 10 CFU/100 mL by five times. The results show negligible health risk and insignificant impacts on the coastal water quality due to pathogenic E. coli in the wastewater used for MAR. However, droughts and reclaimed water quality can be considered the main issues of MAR practices in semiarid regions suggesting additional reclaimed water treatments and further stress tests via QMRAs by considering more persistent pathogens than E. coli. 8 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85089851166 origin=inward Articolo in rivista Pergamon Press. 0043 1354 Water research Oxf. Water research Oxf. Water res. Oxf. Water research. Oxf. LORUSSO NICOLA michele.vurro VURRO MICHELE costantino.masciopinto MASCIOPINTO COSTANTINO TA.P04.005.010 Metodi, dispositivi di stima dei parametri idrogeologici e modelli matematici |
