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Abstract: There has been strong interest in recent years to use rainwater tanks in urban areas of Australia, as catchments yields become less predictable and urban populations continue to increase. The CRC Water Quality and Treatment is conducting research to assess the quality of water from rainwater tanks in urban and industrial areas of Australia. The aim of this research is to concentrate on tanks where a potable supply exists and to use the data in health risk assessment. Storm event data has shown that discarding the first millimetre of runoff via a first flush device usually does little to substantially reduce the mean concentration of contaminants. First flush devices can also substantially reduce the catch of rainwater tanks. Rain sampling shows that there is some lead in rain, though there may be a greater input from the roof itself. The use of rainwater in hot water systems (HWS) can lead to increases in copper and lead concentrations. The lead concentration from hot water sometimes exceeds the drinking water guidelines. The source of the lead from the roof requires further study.

To cite this article: Chapman, Heather; Huston, Rob; Gardner, Ted; Chan, Andrew and Shawl, Glen. Chemical Water Quality and Health Risk Assessment of Urban Rainwater Tanks [online]. In: Delectic, Ana (Editor); Fletcher, Tim (Editor). 7th International Conference on Urban Drainage Modelling and the 4th International Conference on Water Sensitive Urban Design; Book of Proceedings. [Clayton, Vic.]: Monash University, 2006: 509-516. Availability: <http://search.informit.com.au/documentSummary;dn=784851735895270;res=IELENG> ISBN: 0646459031. [cited 14 Feb 16].

Personal Author: Chapman, Heather; Huston, Rob; Gardner, Ted; Chan, Andrew; Shawl, Glen; Source: In: Delectic, Ana (Editor); Fletcher, Tim (Editor). 7th International Conference on Urban Drainage Modelling and the 4th International Conference on Water Sensitive Urban Design; Book of Proceedings. [Clayton, Vic.]: Monash University, 2006: 509-516. Document Type: Conference Paper, Research ISBN: 0646459031 Subject: Water quality management; Tanks--Design and construction; Runoff--Management; Water-pipes--Flushing; Water--Purification--Microbial removal; Water--Pollution--Health aspects; Affiliation: (1) CRC for Water Quality and Treatment
(2) CRC for Water Quality and Treatment, and Griffith University
(3) Queensland Dept of Natural Resources and Mine
(4) Griffith University
(5) CRC for Water Quality and Treatment, and Griffith University

Database: Engineering Collection