Journal
PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-WATER MANAGEMENT
Volume 158, Issue 4, Pages 183-189Publisher
ICE PUBL
DOI: 10.1680/wama.2005.158.4.183
Keywords
hydrology & water resources; public health; water supply
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Collecting rainwater from house roofs can provide both a reliable supply and one that complies with World Health Organisation drinking water guidelines. Mass balance allowance allows the storage volume to be assessed. Pathogen die-off in accordance with first order kinetics shows that two or more tanks operating in series will remove substantially more pathogens than a single tank of the same capacity. Drop inlet pipe, bottom overflow and a floating arm draw-off can provide the quiescent conditions for Cryptosporidium oocysts to settle and achieve drinking water protozoa compliance without microfiltration or ozone disinfection.
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