EYDAP S.A. (Athens Water Supply and Sewerage Company - Εταιρεία Ύδρευσης και Αποχέτευσης Πρωτεύουσας Α.Ε.) is the largest company in Greece dedicated to water services. It is responsible for providing water supply and sewerage services to millions of inhabitants in the greater Attica region, which includes the capital city, Athens. EYDAP's comprehensive operations involve the management of raw water from dams, reservoirs, and aqueducts (like Mornos, Evinos, Yliki, and Marathon), its treatment in modern Water Treatment Plants (such as those in Galatsi, Polydendri, Menidi/Aharnes, Aspropyrgos), the distribution of potable water through an extensive network of over 14,000 km, and the collection and treatment of wastewater at facilities including the major Psyttaleia Wastewater Treatment Plant. The company is committed to ensuring high water quality, protecting public health, managing water resources sustainably, and investing in modern infrastructure and digital transformation.
The headquarters accommodates EYDAP's central administration, including executive management, strategic planning, financial operations, engineering and technical services oversight, human resources, legal affairs, and customer relations management for its extensive water and wastewater services across Attica.
A modern office complex designed to support a large utility's operations. It likely includes advanced facilities such as SCADA (Supervisory Control and Data Acquisition) control centers for real-time monitoring and management of the vast water supply and sewerage networks.
The work culture at EYDAP combines a strong public service ethos with an increasing focus on corporate efficiency and innovation. It emphasizes technical expertise, operational reliability, adherence to strict quality and environmental regulations, and customer-centric service. It often fosters long-term careers, valuing experience and dedication to essential public utility services.
As the command center for the water supply and sanitation of Greece's most populous and economically vital region, EYDAP's headquarters plays a crucial role in public health, environmental protection, urban development, and the daily well-being of millions of residents and businesses in Athens.
As a utility provider primarily focused on the Attica region of Greece, EYDAP does not maintain operational offices or a physical business presence globally in the traditional sense. Its international activities are centered around collaboration with international water organizations (like IWA, EUREAU), participation in EU-funded research and development projects, benchmarking and knowledge sharing with other leading water utilities worldwide, and sourcing advanced technologies and equipment from international suppliers. EYDAP's 'global presence' is thus defined by its engagement with international standards, best practices, and partnerships within the global water sector community, rather than through physical operational outposts in other countries.
Oropou 156
Galatsi, Athens
Attica
Greece
Address: Multiple Peripheral Customer Service Centers, e.g., Peristeri Customer Service Center, Laodikeias 36-38, Peristeri
To offer accessible and decentralized customer service across the wide geographical area of Attica, ensuring customer needs are met efficiently at a local level.
Address: Psyttaleia Wastewater Treatment Plant
Crucial for environmental protection by treating the wastewater of the Athens metropolitan area before its discharge into the Saronic Gulf. It is a hub for advanced wastewater treatment technology and operations.
Address: Aharnes Water Treatment Plant Complex (Menidi)
Ensuring the supply of high-quality potable water to a significant portion of Athens and the broader Attica region. A key node in the water supply infrastructure.
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As of April 2025, EYDAP' leadership includes:
EYDAP has been backed by several prominent investors over the years, including:
EYDAP's top leadership has demonstrated stability. The current Board of Directors, which includes key executive members, had their terms renewed or were re-appointed following the Annual General Meeting of Shareholders in June 2023. There have been no widely publicized major or unexpected new hires or departures within the core executive team (General Managers and CEO) in the past 12 months outside of these standard governance and board term cycles, indicating continuity in strategic direction and operational management.
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EYDAP's email format for individuals commonly uses the first initial of the first name combined with a significant part or the entirety of the last name, followed by @eydap.gr. Generic departmental emails also exist (e.g., ir@eydap.gr for Investor Relations).
[first_initial][lastname_or_lastname_prefix]@eydap.gr
Format
mhatz@eydap.gr
Example
70%
Success rate
eydap.gr • April 16, 2024
EYDAP participated in the 9th Delphi Economic Forum, presenting its strategic plan focused on investments in resilient infrastructure, digital transformation, sustainable practices, and addressing climate change challenges to ensure water security for Attica. The CEO highlighted key projects and the company's commitment to innovation....more
eydap.gr • March 28, 2024
EYDAP released its annual financial results for 2023, reporting an increase in turnover to €380.1 million (from €358.7 million in 2022) and profits after tax of €66.6 million (up from €32.1 million). The results were attributed to tariff adjustments, cost optimization, and continued investments in network modernization and major projects....more
eydap.gr • February 7, 2024
EYDAP announced significant upgrades to its 'myEYDAP' customer portal, introducing new functionalities for easier bill management, consumption monitoring, and online service requests. This initiative is part of EYDAP's broader digital transformation strategy to improve customer experience and operational efficiency....more
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