Water Efficiency Database

Welcome to our resources search page. Please use the drop down menu to find recent Waterwise research and reports. This website also hosts the Water Efficiency Evidence Database, which is a repository of key research reports and paid for by UK water companies to support research and innovation.

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Evidence Base for Large-Scale Water Efficiency Phase II Second Report (2010)

In this report Waterwise examines the effectiveness of water efficiency retrofitting programmes in schools in three English regions and Scotland. Its aim was to demonstrate the benefits, from both the water company and schools perspective, and to inform future water company activity. It draws on data from about 600 schools, four water companies and five water company school retrofitting programmes. The study suggests achievable water savings between 0.58 and 1.78 m3/pupil/year, as well as significant carbon emissions and energy savings. Costs amounted to £0.41 to £0.72 litre/day, which compares to the cost of water savings achievable through domestic retrofits.

For the full article click here.

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

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.

For the full article click here.

Ensuring Water for All (2010)

The aim of this scoping study carried out by Atkins was to extend the existing body of knowledge on water efficiency, allowing regional stakeholders to make informed decisions on how to progress water efficiency as part of a wider multi-stakeholder strategy. Focusing on South East England, the study summarised current water efficiency activity and identified high-potential options to be prioritised in the future and outlined funding opportunities and management structures for effective implementation of options. The key recommendation arising from this scoping study is to develop a regional body for the co-ordination of water efficiency activities.

For the full article click here.

Securing the Future The Role of Resource Efficiency (2010)

This report quantifies how resource efficiency actions, as well as reducing greenhouse gas emissions, can reduce abstracted water, ecological footprint and the use of specific resources. This research has attempted a novel way of modelling the resource inputs, flows across industrial sectors and the final outputs. In this report, environmental issues have been modelled consistently at the macro-economic level, and represent the first known attempt to incorporate physical data into a model which tracks the movement of materials through the UK economy

For the full article click here.

Procurement Requirements for Water Efficiency (2010)

This document includes an overview of the benefits of incorporating water efficiency measures in building design, specifications (flow rates etc) for water-efficient products and guidance on how facility managers can maintain and improve performance. This guidance is for those involved in: design and construction of new buildings; or management and refurbishment of existing buildings. It deals with reducing water use of “domestic-type” water fittings and appliances (i.e. toilets, taps, etc) by specifying target rates of consumption, and it provides model wording to use in your procurement documents. The wording can be copied or adapted as appropriate.

For the full article click here.

Is the Five Minute Shower an Urban Myth? (2010)

This report by ech2o analyses data on shower use at home, at school and in the office. The data was collected between 2008 and 2009 across the whole range of different cultures and economic classes found in the UK today. About 85% of the respondents lived in London, with the rest from various other parts of England and Wales. This data about showers were taken from a survey of 649 people across 167 households. The survey participants showered on average 13 minutes. 64 % showered once a day while 13.5% took a bath or shower twice a day.

For the full article click here.

Harvesting Rainwater for Domestic Uses: An Information Guide (2010)

This publication carried out by the Environment Agency examines rainwater harvesting systems for non-potable domestic uses in houses and gardens. This guidance is for homeowners, house builders, planners, plumbers, architects and building managers. It contains information on the benefits of rainwater harvesting systems, their design, installation, maintenance requirements and cost. It also contains examples of systems that have been installed and are in use. Many of the concepts discussed can also be applied to industrial and commercial premises.

For the full article click here.

Energy and Carbon Implications of Rainwater Harvesting and Greywater Recycling (2010)

This report by the Environment Agency presents the findings of a study that examined the energy and carbon implications of rainwater harvesting and greywater recycling systems for non-potable use. It quantifies lifetime carbon footprints of rainwater harvesting and greywater recycling systems and the contribution to reducing CO2 emissions associated with mains water demand and foul water volumes. The study showed that buildings using harvested rainwater or treated greywater typically increase CO2 emissions. Apart from one system, operational energy and carbon intensities of the systems studied were higher than for mains water.

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Thames Water Awareness Work with Schools

The Thames Water Schools Water Makeover trial encompassed different behavioural change and awareness raising measures to enhance water efficiency efforts. 33 “Be Water Aware” assemblies were delivered to 7,446 pupils and 264 teachers across 32 schools in London. 21 School Water Audits with 557 pupils, various water awareness workshops were held and 2539 pupils in 31 schools learnt how to fit a save-a-flush bag. Water savings of the entire project were assumed to total 54,024m3.

For the full article click here.

UpStream: Motivating Water Conservation with low-cost water flow sensing and persuasive displays (2010)

This study explores unobtrusive low-cost water flow sensing and several persuasive displays as an approach for promoting water conservation in public and private spaces. Early prototypes were installed at public faucets and a private (shared) shower, logging water usage first without and then with ambient displays. Our long-term deployment of the ambient water visualization was able to effectively motivate water reduction in private homes for all participants. Moreover, our displays have led participants to reflect on their behaviour and reconsider sustainability and environmental issues beyond water usage and showing.

For the full article click here.
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