Self Sufficiency of Water in Mainstream Housing - An Australian Experience
It is ideal to have a goal of reaching self sufficiency in water for the promotion of sustainable housing principles. Although there are many small projects of rainwater harvesting, it is yet to be used in mainstream large planned housing developments, which is essential for its successful implementation. There are many associated issues including social acceptance, reliability, cost effectiveness and the feasibility of combining it with the town water supply in an efficient manner. Many of these issues were addressed by implementing a rainwater harvesting system in three Green Smart display homes constructed in a large housing scheme planned for 20,000 houses in Australia. This paper describes the planning, implementation, special features and cost aspects relating to the rainwater harvesting system used in the Green Smart homes and provides a useful example for future larger scale initiatives.
Australian Bureau of Statistics, AustStats (1997). Water Account for Australia 1993-94 to 1996-97, www.abs.gov. au/austats
BOM (2004). Ipswich average climate statistics. Bureau of Meteorology. Web site visited 11 April 2005, w w w.bom.gov.au/climate/averages/tables/ cw_040101.shtml
Cunliffe, D. (2004). Guidance on the use of rainwater tanks. National Environmental Health Forum Monographs, Health Council, Water Series No. 3, 29 pages.
Davey (2005). “Rainbank” switching system. Davey Products Pty Ltd. Web site visited 12 April 2005, www.davey.com.au/ rainbank/index.html
DPW (2005). Queensland Department of Public Works. Research House, web site visited 9 April 2005, www.build.qld.gov.au/research/library/index.asp
Fewkes, A. (1999a). The use of rainwater for WC flushing: The field testing of a collection system. Building and Environment, 34: 765-772.
Fewkes, A. (1999b). Modelling the performance of rainwater collection systems towards a generalized approach. Urban Water, 1: 323-333.
Gardner, T., Millar, G. and R. Hyde (2003). The Healthy Home: A step towards sustainable suburbs. Proceedings of the 2nd National Water Recycling Conference, Brisbane, September 2003. Australian Water Association and Stormwater Industry Association, September, 2003.
Gold Coast Water (2004). Pimpama Coomera Waterfuture – Master Plan Report. Gold Coast City Council. March, 2004.
Healthy Home (2005). Queensland Department of Natural Resources and Mines and Environmental Protection Agency. Healthy Home Project, web site visited 13 April 2005, www.healthyhomeproject.com
Herrman, T. and U. Schmida (1999). Rainwater utilization in Germany: Efficiency, dimensioning, hydraulic and environmental aspects. Urban Water, 1: 307-316.
Millar, G., Bofu, Y. and T. Gardner (2003). Rainfall catch efficiency for domestic water supply, 28th International Hydrology and Water Resources Symposium by The Institution of Engineers, Australia, Wollongong, NSW. November, 2003.
Mitchell, G.V., Shipton, R.J. and S.R. Gray (2002). Assessing innovative urban water servicing options for a greenfield development site. Australian Journal of Water Resources,7(2): 139-154.
Zobrist, J., Muller, S.R., Amman, A., Bucheli, T.D., Mottier, V., Ochs, M., Schoenenberger, R., Eugster, J. and M. Boller (2000). Quality of Roof Runoff for Groundwater Infiltration. Water Resources, 34(5): 1455-1462.