Istaç is a 100% public owned company, belonging to the City of Istanbul, serves the ports, shipyards, fishery ports and marinas in the province of Istanbul. The company operates a fleet of 16 ships, has a total waste collection capacity of 4,100m3, and serves about 35% of the 12,000 ships calling the port as well as about 2,000 ships passing the Turkish Streets and the Bosporus. About 175,000m3 of waste is yearly received of which 129,000m3 is oily waste.
The company operates an oily waste treatment plant in Hayderpassa and has an agreement with the Municipal Waste Water Treatment for the delivery of sewage water. Istac plans to invest in a new installation in Tuzla, with a large concentration of ship repair facilities, close to Istanbul.