Health-risk assessment for roof-harvested rainwater via QMRA in Ikorodu area, Lagos, Nigeria

dc.contributor.authorJohn, Chukwuemeka Kingsley
dc.contributor.authorPu, Jaan H.
dc.contributor.authorMoruzzi, Rodrigo [UNESP]
dc.contributor.authorPandey, Manish
dc.contributor.institutionUniv Bradford
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionNatl Inst Technol NIT
dc.date.accessioned2021-06-25T11:55:46Z
dc.date.available2021-06-25T11:55:46Z
dc.date.issued2021-04-01
dc.description.abstractThis paper presents a study to assess the roof-harvested rainwater (RHRW) in the Ikorodu area of Lagos state, Nigeria, and recommends guidance to minimise the health risk for its households. The types, design and use of rainwater harvesting systems have been evaluated in the study area to inspect the human risk of exposure to Escherichia coli (E. coli). To achieve these objectives, a detailed survey involving 125 households has been conducted which showed that 25% of them drink RHRW. Quantitative microbial risk assessment (QMRA) analysis has been used to quantify the risk of exposure to harmful E. coli from RHRW utilised as potable water, based on the ingestion of 2 L of rainwater per day per capita. Results have revealed that the maximum E. coli exposure risk from the consumption of RHRW, without application of any household water treatment technique (HHTTs) and with application of alum only, were 100 and 96 respectively, for the estimated number of infection risk per 10,000 exposed households per year. This estimation has been done based on 7% of E. coli as viable and harmful. Conclusively, it is necessary that a form of disinfectant be applied to the RHRW before use.en
dc.description.affiliationUniv Bradford, Fac Engn & Informat, Bradford DB7 1DP, W Yorkshire, England
dc.description.affiliationUNESP Univ Estadual Paulista, Inst Geociencias & Ciencias Exatas, Rio Claro, SP, Brazil
dc.description.affiliationNatl Inst Technol NIT, Warangal 506004, Telangana, India
dc.description.affiliationUnespUNESP Univ Estadual Paulista, Inst Geociencias & Ciencias Exatas, Rio Claro, SP, Brazil
dc.format.extent16
dc.identifierhttp://dx.doi.org/10.2166/wcc.2021.025
dc.identifier.citationJournal Of Water And Climate Change. London: Iwa Publishing, 16 p., 2021.
dc.identifier.doi10.2166/wcc.2021.025
dc.identifier.issn2040-2244
dc.identifier.urihttp://hdl.handle.net/11449/209305
dc.identifier.wosWOS:000636486000001
dc.language.isoeng
dc.publisherIwa Publishing
dc.relation.ispartofJournal Of Water And Climate Change
dc.sourceWeb of Science
dc.subjectEscherichia coli (E
dc.subjectcoli)
dc.subjecthousehold water treatment technique (HHTT)
dc.subjectquantitative microbial risk assessment (QMRA)
dc.subjectquestionnaire survey
dc.subjectroof-harvested rainwater (RHRW)
dc.titleHealth-risk assessment for roof-harvested rainwater via QMRA in Ikorodu area, Lagos, Nigeriaen
dc.typeArtigo
dcterms.rightsHolderIwa Publishing

Arquivos

Coleções