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Bacteroides spp. and traditional fecal indicator bacteria in water quality assessment – An integrated approach for hydric resources management in urban centers

2020-10-01Journal article Open access
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dc.contributor.authorTeixeira, Pedro
dc.contributor.authorDias, Deodália
dc.contributor.authorCosta, Sílvia
dc.contributor.authorBrown, Bárbara
dc.contributor.authorSilva, Susana
dc.contributor.authorValério, Elisabete
dc.date.accessioned2021-03-05T10:38:15Z
dc.date.available2021-03-05T10:38:15Z
dc.date.issued2020-10-01
dc.description.abstractAs part of a sustainable water resources management, the Lisbon municipality identified groundwater and treated wastewater use increase as two opportunities for better and sustainable water use, with natural safeguard for public health as a priority. In this context, the aim of our research was to assess the suitability of the human-associated marker gene Bacteroides HF183 and the cattle feces-associated CowM2, in routine water quality monitoring as indicators for water use and reuse, providing a tool to more accurately assess public health risks. To this intent, Real-Time quantitative PCR was used for detection of human-associated marker gene Bacteroides HF183 and the bovine-associated CowM2, in a total of 67 samples - groundwater and wastewater at three different treatment stages of a Waste Water Treatment Plant, in Lisbon. HF183 marker gene was detected in treated and untreated wastewater samples, with significant concentration reductions from untreated (6,07 E+07 copies/mL) to secondary treated effluent (1,86 E+05 copies/mL) and a further decrease in tertiary treatment (5,74 E+04 copies/mL). In groundwater samples, this marker was also detected in concentrations ranging from 2,63 E+02 copies/mL to 2,24 E+03 copies/mL. CowM2 marker gene on the other hand was only detected in wastewater samples, with concentrations ranging from 2,47 E+02 copies/mL to 1,17 E+04 copies/mL. Our research indicates that the use of Bacteroides spp. in association with traditional fecal indicator bacteria (FIB) is advantageous for water managing entities in urban settings, such as Lisbon, were drainage system failures may occur. An integrated approach thus provides crucial and more adequate information towards mitigation and correction measures when fecal contamination is detected in environmental waters.pt_PT
dc.description.abstractHighlights: Bacteroides were evaluated in an integrated hydric resources management approach; Mutual detection of Bacteroides and FIB is advantageous for water managing entities; HF183 marker was detected in groundwater, untreated and treated wastewater samples; Identifying the origin of groundwater contamination allows correction measures; HF183 marker may have a future role in evaluation of wastewater treatment.pt_PT
dc.description.sponsorshipThis work was financially supported by the Lisbon Municipality in collaboration with Instituto Nacional de Saúde Doutor Ricardo Jorge.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationJ Environ Manage. 2020 Oct 1;271:110989. doi: 10.1016/j.jenvman.2020.110989. Epub 2020 Jun 24pt_PT
dc.identifier.doi10.1016/j.jenvman.2020.110989pt_PT
dc.identifier.issn0301-4797
dc.identifier.urihttp://hdl.handle.net/10400.18/7323
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier/ Academic Presspt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0301479720309178?via%3Dihubpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectBacteroidespt_PT
dc.subjectHF183pt_PT
dc.subjectCowM2pt_PT
dc.subjectGroundwaterpt_PT
dc.subjectWater Reusept_PT
dc.subjectWater Qualitypt_PT
dc.subjectÁgua e Solopt_PT
dc.subjectDeterminantes da Saúde e da Doençapt_PT
dc.titleBacteroides spp. and traditional fecal indicator bacteria in water quality assessment – An integrated approach for hydric resources management in urban centerspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage110989pt_PT
oaire.citation.titleJournal of Environmental Managementpt_PT
oaire.citation.volume271pt_PT
rcaap.embargofctAcesso de acordo com página web do editor da revista.pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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