The project envisages the reconstruction, rehabilitation and upgrading of the public water supply and sewage system in the area of the agglomerations of Trilj and Otok and the Municipality of Dicmo, as well as the extension and upgrading of the UPOV 2 treatment level of the existing capacity of 3 500 p.e. to a capacity of 6 000 p.e. The project envisages the connection of 5 662 new inhabitants to the sewage system and 135 new inhabitants to the water supply system. Approximately 32,000 flats in the wider area are expected to have an improved public water supply service.