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Encouraging Change is a clear and simple field-level facilitator’s guide which assists communities in identifying and implementing practical, low-cost improvements to their water supplies and sanitation. It has been developed in Zambia and is being used by the Ministry of Health as a reference document for extension workers. This new edition has shifted from Zambia-specific examples to ones from communities in other countries across the developing world. Photographs and illustrations are included, and there is a CD with 100 A4 posters which field-workers can use for teaching or discussion of the methods discussed.