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Research, undertaken at the University of Sheffield since 2001, into the discolouration of drinking water occurring within distribution systems has had economic, policy and professional practice impacts on the water supply sector since 2008. This has resulted in improved levels of service, has safeguarded water quality delivered to the public and has delivered substantial economic savings. For example, in one of the few cases where monetary value is available, Wessex Water made 63% savings on two trunk main schemes with an initial estimated cost in excess of £1M. The 4 and 7 km lengths of these trunk mains represent less than 1% of the trunk mains being impacted by our research. Our research has resulted in a step change in the concept and approach to the management of discolouration in water distribution systems.
UCL research findings about the source, transport and fate of arsenic in sediments exploited for water supply in the Bengal Basin have underpinned the development and implementation of policy by the Bangladesh government, international donors and non-governmental organisations (NGOs), and led to improvements in public health security across southern Bangladesh. By demonstrating that arsenic pollution in Bangladesh is not caused by irrigation pumping, the research countered popular demands and government intentions to curb irrigation, thereby supporting the country's continued food-grain self-sufficiency. Subsequent UCL explanations of the geochemical and hydraulic processes controlling groundwater arsenic have underpinned further revision of the government's strategies for monitoring groundwater and mitigating the crisis; the resultant reduction in arsenic exposure among approximately 10 million people has significantly enhanced public health security.
Our research on the natural processes that reduce pollutant concentrations in the subsurface has enabled the UK to adopt "Natural Attenuation" as a management policy and has changed professional practice at many contaminated sites. The massively reduced costs of this approach over active clean-up of sites in 2008-13 has saved a minimum of £100M for the UK. Our research has also influenced European practice, saving hundreds of millions of Euros. The beneficiaries are typically chemical industries of all sizes, from refineries to small repackaging plants and petrol station owners, but also local authorities and the State in cases where they would bear the cost of clean-up.
Exeter Engineering's Centre for Water Systems (CWS) undertakes internationally leading fundamental and applied research in the $500bn global water sector. EPSRC-funded research has underpinned impacts with both reach and significance in the areas of practitioner and professional services and economic impact. CWS staff have co-authored authoritative best practice guides with highly respected practitioner publishers: the Construction Industry Research and Information Association (CIRIA), the Building Research Establishment (BRE) and Spon Press. These have been widely used in the water sector, and construction and built environment sector. CWS software and knowhow have been used extensively by water service providers (such as Scottish Water) and their consultants (including SEAMS, originally an Exeter spinout) to enhance business performance by identifying efficiencies, saving costs and improving operation. Optimisation software has been made freely available and has hundreds of users worldwide including consultants and financial organisations.
The Hydro-environmental Research Centre (HRC) at Cardiff University has developed a widely used hydro-environmental numerical model, called DIVAST (Depth Integrated Velocities And Solute Transport). DIVAST addresses the need for more accurate models to predict flood risk and water quality levels for a range of extreme events. The model has been implemented in commercial codes, marketed by CH2M HILL (previously Halcrow), and used in design studies, for example, undertaken by Buro Happold. The impacts of the research are marked environmental, health, economic and industrial benefits. It is used by major organisations around the world on large-scale projects and, in particular, for mitigation planning against national and international risks associated with floods and water quality.
This case study describes the economic impact to sections of the hydrocarbons industry resulting from research into deep water sediment transport and depositional processes. turbidites.org is a multi-institutional, interdisciplinary research platform based at University of Aberdeen, which takes a multi-scale approach to understanding deep-water depositional systems and their significance as a stratigraphic record of long-term environmental change. The resulting research outputs have been applied to deep-water hydrocarbon reservoir prediction.