The Solina Commune as Lead Beneficiary in cooperation with the Skhidnytsia Town - Beneficiary 1 plan to implement environmentally friendly project, which main task is to protect and secure the Solińskie Lake, local rivers (San and Skhidnichanka) and healing waters of Skhidnytsia (types: Naftusia, Skhodnicka and a sodium Borjomi) from contamination with sewage. Partners join the status of spa resorts so their common goal is to improve and maintain a good quality surface and groundwater as the main natural resources used by tourists and patients. Construction of sewage treatment plants and sanitary sewage system will reduce pollution inputs directly into the soil, surface water and deep water. In addition to protecting the environment, it will create the opportunity for the development of tourism in the region and increase its attractiveness to foreign investors. The investments and all project activities on the Polish side will be implemented in the catchment area of San river and the Baltic Sea. The source of San is located near Sianki in Ukraine, on south-eastern slopes of Piniaszkowa Mountain in the Western Bieszczady Mountains at approximate altitude of 925 m. The first left tributary to San river has its source on Polish- Ukrainian border near boundary mark no 224. In its upper part San flows towards north-west crossing Bieszczady Mountains. Further down the river two artificial water reservoirs have been created: Jezioro Solińskie and Jezioro Myczkowskie. San is the longest river in Bieszczady Mountains. As San is one of the most beautiful mountain rivers in Poland, Nature 2000 site (Dorzecze Górnego Sanu) and other reserves have been established in its valley. Reduction in wastewater pollution of San river is vital to environmental protection of its lower part and contributes to cleaner Vistula river and the Baltic Sea.