Participatory hygiene and sanitation transformation: A new approach to working with communities
PHAST stands for Participatory Hygiene and Sanitation Transformation. It is designed to promote hygiene behaviours, sanitation improvements and community management of water and sanitation facilities using specifically developed participatory techniques. This document describes the underlying principles of the approach, the development of the specific participatory tools, and the results of the field tests done in four African countries.
documents can be download or view directly at WHO website http://www.who.int/water_sanitation_health/hygiene/envsan/phast/en/