with the corresponding knowhow and capacity to manage and implement the project. The training effort is more successful if a variety of different education tools is applied such as lessons during group or community gatherings, house-to-house visits, theaters, puppet plays, pamphlets and posters, information dissemination through mass media (Radio, TV) as well as Information corners and SODIS demonstrations. The socio-psychological evaluation of the SODIS dissemination process in Bolivia has shown that the promoter plays a key role for the trust into the messages provided and for the uptake of the corresponding practice. It is of high importance that the promoter has established a relation of trust with the local population. The basis for this relation of trust is that he speaks the same language and has the same cultural background!
6) Intermediary Institutions Reputation and experience of the local project partner organisation in the project area, ties to the target population, involvement of other institutions (e.g. local government, health posts, laboratories, schools, universities and cultural, religious, political leaders) in the project, impact of the proposed project, existing network for the future scale-up of SODIS promotion are important factors for the success of the project.