Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 408, Issue 23, Pages 5828-5835Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2010.08.006
Keywords
Energy use; Carbon emissions; Microcomponents; Sustainability; Water demand management
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The Code for Sustainable Homes (CSH) in England sets out various water efficiency targets/levels, which form part of environmental performance criteria against which the sustainability of a building is measured The code is performance based and requires reduction in per capita water consumption in households The water efficiency related targets can be met using a range of water efficient microcomponents (WC, showers, kitchen taps, basin taps, dishwashers, washing machines, and baths) However, while the CSH aims at reducing the adverse environmental implications associated with the dwellings by promoting reduction in water consumption, little is known about the energy consumption and the environmental impacts (e g carbon emissions) resulting from water efficient end uses This paper describes a methodology to evaluate the energy consumption and carbon emissions associated with the CSH's water efficiency levels Key findings are that some 96% and 87% of energy use and carbon emissions, respectively associated with urban water provision are attributable to in-house consumption (principally related to hot water), and that achieving a defined water efficiency target does not automatically save energy or reduce carbon emissions (C) 2010 Elsevier B V All rights reserved
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