Bids for the Rafina-Pikermi and Spata-Artemida wastewater treatment plant, sea outfall and environmental centre, budgeted at €94.02 million excluding VAT (€100.01 million with options), were due on 3 November 2026. No bid-opening result had been reported by 12 November 2026.
A second attempt, run by Growthfund
The first tender, launched in 2023, was cancelled in 2025 without an award. EYDAP signed a mandate with Growthfund's Strategic Contracts Unit on 27 May 2026 to run the re-tender on its behalf, with EYDAP remaining the contracting authority. The contract runs up to 114 months, including seven years of operation and maintenance, and is funded by the "Environment and Climate Change 2021–2027" programme and EYDAP.
Marathon is awarded but not signed
In September 2026 EYDAP's Board awarded the Marathon treatment plant and transfer pipelines to the Gkoliopoulos ATE – Giovanni Putignano & Figli joint venture, at €40,450,323.51 excluding VAT (€50,158,401.15 including VAT). The award still had to clear an appeal period and pre-contract checks, and no signing had been reported by 12 November 2026.
Networks are ahead of the plants
The plants serve EYDAP's largest plan line, €965 million for Eastern Attica in its 2026–2035 plan. By June 2026 construction contracts worth €243 million had been let and €109.1 million absorbed (45% financial progress), with 456 km of sewer pipes and 15,065 external branches built in Pallini, Paiania, Rafina-Pikermi, Spata-Artemida and Marathon.
Which other EYDAP programmes are open to suppliers, how its procurement channels work and where to focus first are set out in the brief. The full report, EYDAP S.A.: Utility Account Brief, is available for USD 499. For a free overview, read the EYDAP S.A. Utility Snapshot.