The first stage flow rate of the Velimeşe OIS Domestic and Industrial Wastewater Treatment Facility, which is built on approximately 174 acres and will serve as a joint treatment facility for the OIS of Velimeşe, Veliköy, Kapaklı and Yalıboyu, is planned as 150.000 m³/day and the final flow rate of the second stage is designed as 200.000 m³/day.