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dc.contributor.authorWard, Sarah
dc.contributor.authorMemon, Fayyaz
dc.contributor.authorButler, David
dc.date.accessioned2013-05-28T12:48:44Z
dc.date.issued2010
dc.description.abstractThis paper summarises the physicochemical and microbiological quality of water from a rainwater harvesting (RWH) system in a UK-based office building. 7 microbiological and 34 physicochemical parameters were analysed during an 8 month period. Physicochemically, harvested rainwater quality posed little health risk; most parameters showed concentrations below widely used guideline levels for drinking water. However, RWH system components (e.g. fittings and down pipes) appear to be affected soft water corrosion, resulting in high concentrations of some metals (copper, zinc and aluminium). This suggests the material selection of such fittings should be considered keeping in view the hardness of rainwater of an area. Microbiologically, Cryptosporidium, Salmonella and Legionella were not present in the samples analysed. However, faecal coliform counts were high at the beginning of the study, but did decrease over time in weak correlation with increasing pH. Enterococcus faecalis displayed counts consistently above UK rainwater harvesting standards. Inappropriate roof and rainwater good design, as well as material selection appear to be responsible for the reduced microbial quality, as they promoted contributions from avian sources and inhibited cleaning activities. Building and RWH system designs require greater consideration of local factors, which are critical for optimising harvested rainwater quality, to prevent both the development of contaminated sediments and health impacts.en_GB
dc.identifier.citationVol. 61 (7), pp. 1707 - 1714en_GB
dc.identifier.doi10.2166/wst.2010.102
dc.identifier.urihttp://hdl.handle.net/10871/9643
dc.language.isoenen_GB
dc.publisherIWA Publishingen_GB
dc.relation.urlhttp://dx.doi.org/10.2166/wst.2010.102en_GB
dc.subjectConservation of Natural Resourcesen_GB
dc.subjectGreat Britainen_GB
dc.subjectRainen_GB
dc.subjectWateren_GB
dc.subjectWater Microbiologyen_GB
dc.subjectWater Purificationen_GB
dc.subjectharvested rainwateren_GB
dc.subjectwater demand managementen_GB
dc.subjectwater qualityen_GB
dc.titleHarvested rainwater quality: the importance of appropriate designen_GB
dc.typeArticleen_GB
dc.date.available2013-05-28T12:48:44Z
dc.identifier.issn0273-1223
exeter.place-of-publicationEngland
dc.descriptionCopyright ©IWA Publishing 2010. The definitive peer-reviewed and edited version of this article is published in Water Science and Technology Volume 61 Issue 7, pp. 1707–1714 (2010), doi:10.2166/wst.2010.102 and is available at www.iwapublishing.comen_GB
dc.identifier.journalWater Science and Technologyen_GB


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