A dispute has erupted between EYDAP and the municipal authorities of eight Attica municipalities over debts that have been outstanding for years and relate to the use of the sewerage network in their areas.
The sums involved run into millions of euros, and EYDAP is considering every option in its efforts to collect the money owed.
But let’s start at the beginning.
In these areas, such as Fyli and Vari, the municipalities operate their own water supply networks. This means they buy water at wholesale prices and then distribute it to end consumers. At the same time, however, they use EYDAP’s sewerage network, a service that is, of course, charged to households.
But the listed company cannot issue bills for the sewerage charge and collect the money. The reason is simple: it does not have data on water consumption in these areas, which is used to calculate the sewerage charges.
Sources say EYDAP has repeatedly requested the data, but the municipalities refuse to provide it, citing various pretexts.
“This is not an accounting issue. The sewerage charge is calculated on the basis of the water consumed, and without this data a bill cannot be issued. Consumers do not avoid the charge; they simply pay it later, covering many years at once,” the same sources add.
One option under consideration, however, is for EYDAP to seek the money from the municipalities rather than from end consumers.
The municipalities
The case mainly concerns the municipalities of Nea Erythraia, Gerakas, Mandra-Eidyllia, Dionysos, Fyli-Ano Liosia, Vari, Koropi and Pallini.
According to sources, the most extreme case is that of the Municipality of Fyli. EYDAP is waiting for water consumption data from 2009 to 2024 — a period of 16 years — and sends a letter every year without receiving a reply. Court rulings have already been issued for 2004–2008: in 2019, the Athens Multi-Member Court of First Instance ruled that the municipality must provide the data, as did the Athens Court of Appeal in 2023.
In the Municipality of Dionysos, EYDAP requested consumption data for 2022–2025 in March. The Environment Directorate forwarded the request to the Revenue Directorate and asked EYDAP to “update its records” so it would know whom to contact.
Two weeks later, the Revenue Directorate replied on the mayor’s instructions. It said it was not the competent authority, that the records were held by the Water Supply Department and that it had already said so in December 2024. The document was also sent to EYDAP, which is still waiting for the data.
In the Municipality of Koropi, EYDAP sent a letter in April 2025, again in September 2025 and for a third time in June 2026. On the last occasion, it addressed the mayor personally. The 2024 consumption data have still not been sent, and the 2025 data are now also outstanding.
In Vari, EYDAP took over the water supply network on 30 September 2025. But consumption data from January 2024 until the handover, a period of about 21 months, have still not been provided. The first letter was sent in October 2025 and a reminder in July 2026, stating that EYDAP reserved the right to claim the revenue it was losing.
In addition, EYDAP sent the same letter to the Municipality of Pallini and the Municipality of Mandra-Eidyllia, on 4 February 2026. Neither municipality has sent the 2024 data, although it was requested in October 2025.
The 2025 data are now also outstanding.