1. Department of Civil and Structural Engineering, University of Sheffield, Sheffield, UK
2. Department of Research (Water), Northumbrian Water Ltd., Durham, UK
3. Dŵr Cymru Welsh Water, Treharris, UK
4. Research and Development, Severn Trent Water Ltd., Coventry, UK
5. Process Optimisation, Scottish Water, Stirling, UK
6. Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, UK