Evidence Base for Large-Scale Water Efficiency in Homes Phase II Interim Report (2010)

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This report comprises the first Waterwise developed in Phase II of the Evidence Base. It aims at helping water companies, manufacturers and retailers to build the case for their future water efficiency retrofitting projects and provides practical advice on how to make water efficiency a more viable option. It provides information on water savings achieved in water efficiency trials and projects across the UK, the uncertainties often innate to their findings, as well as CO2 emissions associated with water savings. It showed that water savings per property per day can be as high 34 litres, with uptake rates between 6 % and 22 %, and costs ranging from £41 to £240 per property.