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A global review of the microbiological quality and potential health risks associated with roof-harvested rainwater tanks
Journal article   Open access

A global review of the microbiological quality and potential health risks associated with roof-harvested rainwater tanks

Kerry Hamilton, Brandon Reyneke, Monique Waso, Tanya Clements, Thando Ndlovu, Wesaal Khan, Kimberly DiGiovanni, Emma Rakestraw, Franco Montalto, Charles N. Haas, …
npj clean water, v 2(1)
01 Mar 2019
url
https://doi.org/10.1038/s41545-019-0030-5View
Published, Version of Record (VoR)CC BY V4.0 Open

Abstract

Engineering Engineering, Chemical Environmental Sciences Environmental Sciences & Ecology Life Sciences & Biomedicine Physical Sciences Science & Technology Technology Water Resources
A broad body of literature has been published regarding roof-harvested rainwater quality around the world. In particular, the presence of fecal indicator bacteria and pathogenic microorganisms has raised concerns regarding the acceptability of rainwater for potable and non-potable uses. As the use of molecular assays has improved understanding of the diverse microbial communities present in rainwater tanks and their role in providing benefits or harm to human health, a comprehensive review is needed to summarize the state of the science in this area. To provide a summary of microbial contaminants in rainwater tanks and contextual factors, a comprehensive review was conducted here to elucidate the uses of rainwater, factors affecting water quality, concentrations of fecal indicators and pathogens, the attribution of pathogens to host sources using microbial source tracking, microbial ecology, human health risks determined using epidemiological approaches and quantitative microbial risk assessment, and treatment approaches for mitigating risks. Research gaps were identified for pathogen concentration data, microbial source tracking approaches for identifying the sources of microbial contamination, limitations to current approaches for assessing viability, treatment, and maintenance practices. Frameworks should be developed to assess and prioritize these factors in order to optimize public health promotion for roof-harvested rainwater.

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14 Record Views
107 citations in Scopus

Details

UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#6 Clean Water and Sanitation
#2 Zero Hunger
#13 Climate Action
#11 Sustainable Cities and Communities
#14 Life Below Water
#3 Good Health and Well-Being
#9 Industry, Innovation and Infrastructure

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Engineering, Chemical
Environmental Sciences
Water Resources
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