Grateful acknowledgement is made to the following sources for permission to reproduce material in this course:
Pages 36–37: Edwards, R. 'WWF blames fish farms for poison algae', The Sunday Herald, 17 September, 2000. Courtesy of the Scottish Media Group.
Figure 1 Centre for Science and Environment, New Delhi; Figure 4(a): © Gerard & Margi Moss: Still Pictures; Figure 4(b): © David M. Denis/Oxford Scientific Films; Figure 15: The Centre for Ecology and Hydrology, Windermere; Figure 17(a) © Paul Kay/Oxford Scientific Films; Figures 20, 21, 23 & 28: Hall, T. & Hyde, R. A. Water Treatment Processes and Practices. Reproduced courtesy of WRc Plc. www.wrcplc.co.uk; Figure 27 Klei, H. E. & Sundstrom, D. W. (1979) Waste Water Treatment, Prentice-Hall, Inc.; Figure 29: From Water Treatment, PCI-Water; Figure 30 Dept. of Water and Sanitation in Developing Countries (SANDTEC) EAWAG; Figures 32, & 90: Biwater Treatment Ltd; Figure 33: http://www.defra.gov.uk/envrionment/statistic, December 2001, DEFRA: Crown copyright material is reproduced under Class Licence Number C01W0000065 with the permission of the Controller of HMSO and the Queen's Printer for Scotland; Figures 34–35–36: Overman, M. (1976) Water, Aldus Books Ltd; Figure 39: Howard Humphries & Partners Ltd; Figure 40: Courtesy of Tendring Hundred Water Services and Veolia Environment Group; Figures 42 Burberry, P. (1992) Environment and Services: Mitchell's Building Series, Longman Group. course image: Courtesy of: Monday Morning Photography http://www.flickr.com/photos/mrjda/310100819
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