Psyttalia Wastewater Treatment Plant - ΕΥΔΑΠ Α.Ε.Psyttalia WWTP. The Psyttalia WWTP is the main wastewater treatment plant in
the greater Athens area, receiving an average wastewater flow of approximately
Athens Water Supply and Sewerage Company - ευδαπIn 1999, under the "Issues Related to the Athens Water Supply and ... In January
2000, EYDAP S.A. was listed on the Main Market of the Athens Stock Exchange .