WORK IS CARRIED OUT ON THE PLANTS DISCHARGING INTO THE REGI LAGNI AND THE CUMA PLANT, WHICH ARE CURRENTLY NOT FULLY FUNCTIONING, IN ORDER TO RESTORE PERFORMANCE TO THE FULL AND PROPER FUNCTIONING. THE PROJECT INVOLVES UPGRADING OF THE REGIONAL WATER TREATMENT PLANTS OF NAPLES NORTH, ACERRA, CUMA, REGI AND MARCIANISE.