'Water Technology' is essential reading for the environmental science or engineering student.

This is an excellent book, covering the material at the correct level for student engineers and environmental scientists Professor P G Smith, Department of Civil Engineering, University of Paisley, UK Good basic text, covers all aspects of water treatment at required level. Dr Nancy Cromar, Department of Environmental Health, Flinders University, Australia Eminently readable Dr L R Davidson, Faculty of the Built Environment, UWE, UK Useful in covering the whole system. Dr A Lawrence, Department of Biological Sciences, University of Hull, UK ...this mass of information is presented in simple and readable style ... Dr Gray's plain and lively style makes the subject less boring ... this is a good book, useful for anyone engaged in any aspect of water use. Whichever particular field one specialises in, it is a good idea to have guide to all the others. Sooner or later we all find ourselves out of our depth, and if the problem is not an industrial one, this is a book I would go to. If it didn't actually give me the answer, it would probably guid me to the next source George Solt in Transactions of the Institution of Chemical Engineers Part B, March 2000.

Water quality and regulation * Basic Considerations in hydrobiology * Water resources * Factors determining the distribution of animals and plants in freshwaters * Basic aquatic ecosystems * Micro-organisms and pollution control * Water pollution * Water quality assessment * Water quality management * Water treatment and disposal * Drinking Water contamination * Pathogens and microbiral quality of drinking water * Nature of waste water * Introduction to waste water treatment * Biological aspects of secondary sewage treatment * Fixed film systems * Activated sludge * Other biological treatment systems and tertiary treatment * Anaerobic digestion * Physico-chemical treatment processes * Sludge treatment and disposal * Household and small scale treatment systems.