The GREEN GORICA WASTE WASTE WATER SYSTEM SYSTEM includes the necessary investments in the sewage and wastewater treatment system in the Velika Gorica area for the purpose of meeting the requirements and in order to comply with the Urban Waste Water Treatment Directive 91/271/EEC. The project consists of two phases. • Phase 1 of the project includes investment investments within the OPKK 2014-2020 financial period. • Phase 2 of the project covers investment investments within the financial period of the PKK 2021-2027. Phase 2 consists of: • Upgrade of the UPOV, in accordance with the prescribed level of purification (74.000 ES, III. degree).