Prevalence of enteropathogenic bacteria in treated effluents and receiving water bodies and their potential health risks

The Science of the Total Environment
Giorgis Z TeklehaimanotMaggy N B Momba

Abstract

The failure of wastewater treatment plants to produce effluents of a high microbiological quality is a matter of great concern in terms of water resource pollution. A more serious concern is that this water source is used by communities in developing countries for multiple purposes, which include drinking, recreation and agriculture. The current study investigated the prevalence and potential health risks of enteropathogenic bacteria (Salmonella typhimurium, Shigella dysenteriae and Vibrio cholerae) in the treated effluents of three selected South African Wastewater Treatment Works as well as their receiving water bodies. Culture-based and polymerase chain reaction techniques were used to detect and identify the pathogenic bacteria. The conventional methods revealed that of the 272 water samples collected, 236 samples (86.8%) tested presumptively positive for Salmonella spp., 220 samples (80.9%) for Shigella spp. and 253 samples (93.0%) for V. cholerae. Molecular test results indicated that out of the randomly selected presumptive positive samples (145), zero to 60% of samples were positive for S. typhimurium and S. dysenteriae and 20% to 60% for V. cholerae. For the health risk assessment, the daily combined risk of S. typhimu...Continue Reading

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Citations

Apr 24, 2016·Environmental Science and Pollution Research International·Si BonettaE Carraro
Sep 24, 2018·Journal of Applied Microbiology·C García-AljaroF Lucena
Jun 11, 2020·Environmental Science and Pollution Research International·Chongmiao ZhangLimei Xu
Feb 23, 2017·Environmental Science and Pollution Research International·Kiley DaleyLisbeth Truelstrup Hansen
Apr 22, 2018·Current Environmental Health Reports·Andrew F BrouwerJoseph N S Eisenberg
Sep 8, 2021·Frontiers in Cellular and Infection Microbiology·Oyama GxaloUchechukwu U Nwodo
Apr 18, 2020·Ecotoxicology and Environmental Safety·Mutshiene Deogratias EkwanzalaMaggy Ndombo Benteke Momba

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