The improvement of the environmental conditions in the cross-border area, the promotion of the sustainable use of natural resources; promoting cross-border cooperation in the field of environmental protection; drafting project documentation for sewer systems equipped with a waste water treatment equipment in the area of the municipalities of Kamanje and Zakanje for a total of 5 settlements (Kamanje, Orljakovo, Zakanje, Bubnjari Brod, Jurovski Brod). Achievements: The project documentation for the construction of a sewer system was drawn up for municipalities along the Kupa River that were part of the project. The results of this activity are contributing to the improvement of the flow of the Kupa River and groundwater