In Slovenia as a small country, we have a relatively large number of municipalities, among which there are many small and financially of adjective. These municipalities are more difficult to fund and pursue larger projects, so -on this site- here? occurs the cooperation between them, which is in the diploma work also presented. Attention is given to the integration or cooperation of the municipalities, with emphasis on the strengths and weaknesses of this. In particular, it is exposed to the economic aspect the benefits of cooperation, namely the achievement of economies of scale, lowering costs of service delivery and to increase the efficiency of service delivery. I will present everything also in the specific case of integration of the three goriških municipalities in the coastal region: the Municipalities of Miren - Kostanjevica, Municipality of Šempeter - Vrtojba and the Municipality of Nova Gorica. The example refers to the project of Drainage and treatment of wastewater in the Soča river basin, with which they built the water treatment plant at the Vrtojbici (Nova Gorica).
The purpose of the thesis is to inform municipalities on the potential strengths and weaknesses of the cooperation and integration between municipalities and is shown show in a concrete case. On the basis of the results of the analysis will be primarily the smaller municipalities easier to decide for these forms of cooperation. The results show that the inter-municipality cooperation has a positive impact on the performance or the realisation of projects in smaller municipalities, and that increases the efficiency of the provision of local public services. For obtaining the results are used different methods of research. In the theoretical part, it is used the analysis of secondary sources, in the analytical part, it is used a case study of the selected inter-municipal cooperation, where it is also used to interview.