The project includes: - the construction and reconstruction of the public water supply system; - the construction and reconstruction of the public drainage system; - upgrading the existing CUPOV in Divulje from the 1st to the 2nd degree of purification (from mechanical to biological treatment) with an increase in capacity from 40,000 p.e. to 100,000 p.e.; - construction of UPOV Čiovo 2nd degree of purification (biological purification) with a capacity of 25000 ES; in the area of the towns of Kaštela, Trogir, the municipalities of Seget and Okrug and the settlement of Slatine (City of Split) with the aim of increasing the population's connection to public water supply and drainage systems and ensuring adequate wastewater treatment.