Piloting environment and health projects involves intersectoral and cross disciplinary projects; transboundary cooperation projects between governments and government agencies; inter governmental cooperation projects between different ministries; new cooperation projects between public and private sector, and most importantly, community based health and environment projects representing the full implementation of international imperatives for environmental health.Because of scope of environment and health actions necessary to address present and future environmental health conditions, piloting is required to test out new combinations of collective action and to test and develop new strategies for international, national and local implementation.