Salamis Island
Psyttaleia () is an uninhabited island in the Saronic Gulf between the harbor of Piraeus and the Kynosoura peninsula on Salamis Island, Greece. It covers an area of 0.375 square kilometers. The island houses the Athen's largest sewage treatment plant which also the largest in Europe, with a projected daily maximum drying capacity of 750 tons of sewage. Administratively it is part of the Municipality of Piraeus.