1. School of Water Sciences, Cranfield University, Cranfield, Bedfordshire, MK43 OAL
2. Yorkshire Water, Research and Process Development, Western Way, Halifax Road, Bradford, BD6 2LZ
3. United Utilities Service Delivery, Asset Creation – Task Team, Thirlmere House, Lingley Mere, Lingley Green Avenue, Warrington, WA5 3LP, UK