Law 5325/2026, published on July 31, 2026, extends EYDAP's jurisdiction across Attica and into Boeotia, Phocis and Evia, and requires the special succession of about 43 existing water providers by July 31, 2027.
What the law changes
The new territory covers all first-degree local authorities of Attica Region except Kythera and Antikythera, Poros, Spetses, Troizinia and Hydra, plus the regional units of Boeotia, Phocis and Evia except Skyros. Law 5325/2026 also adds irrigation services and the management of stormwater networks. Each newly added region needs a five-year investment plan with a budget and funding sources.
Where it starts from
Today EYDAP serves approximately 4,400,000 residents with water and 3,695,500 with sewerage, through networks of approximately 14,300 km and 8,716 km. In September 2023 it took over Megara's networks, with 270 km of pipelines supplying 13,500 facilities. The External Water Supply System that brings raw water to Athens, 495 km long, is owned by EYDAP Fixed Assets and operated by EYDAP under a contract extended to December 31, 2026.
What is still open
By the time of its H1 2026 report, the succession process was at an initial stage and no transfer had been completed. Transfers require due diligence and valuations approved by the Waste, Energy and Water Regulatory Authority. Each municipality may either hand over ownership of its assets or keep it and grant EYDAP a right of use. EYDAP says the financial impact "cannot be reliably determined at this stage". In July 2026, during consultation on the bill, the president of the union of municipal water and sewerage companies criticized it for lack of consultation.
How the State, the regulator and EYDAP Fixed Assets divide responsibility for Athens' water, how the 2025 drought tested supply, and what the €2.5 billion plan for 2026–2035 funds are set out in the report. The full report, Water Systems Overview: EYDAP S.A., is available for USD 499. For a free overview, read the EYDAP S.A. Utility Snapshot.