ENVIN S.A. on 25/07/2022 signed a contract for the project " WASTEWATER TREATMENT PLANT OF KARTEROS AND K. CHANI – VATHEINOS KAMPOS" The project concerns the construction of the WWTP for the settlements of Karteros and Kokkini Chani - Vathianos Kampos of the Municipality of Hersonissos to serve the peak population of 9,929 i.c. The Facility will be designed based on the activated sludge system, with submersible ultrafiltration membranes (MBR)