Twort, A.,. Ratnayaka, D., Brand J.: Water supply, London IWA Publishing 2000, ISBN 0-340-72018-2
Water treatment handbook, France: Degremont, 2007 vol.1. 785 p. ISBN 978-2-74030-0970-0
Berg S.: Water Utility Benchmarking, London, IWA Publishing 2010, 128 p., ISBN 978-184-3392-729