- Business
- Athens Water Supply and Sewerage Company S.A. (EYDAP) is the largest Greek enterprise in the water supply and sewerage sector, primarily servicing the metropolitan area of Athens and surrounding municipalities in the Attica region. Founded in 1980 and headquartered in Galatsi, Athens, EYDAP offers a comprehensive range of products and services including potable water supply through an extensive network of over 2 million water meters and approximately 9,500 kilometers of water pipes; sewerage services to about 3.5 million residents via nearly 6,000 kilometers of sewer lines; wastewater treatment through four major treatment plants with capacities ranging from 200,000 to 600,000 cubic meters per day; and renewable and conventional energy production involving hydropower, natural gas, and solar energy. The company also provides specialized services such as septic sewage treatment and advanced water quality control supported by dedicated R&D facilities.
In the last 1-2 years, EYDAP has undertaken significant strategic initiatives including launching a €2.5 billion decade-long investment program aimed at modernizing and expanding water supply and wastewater infrastructure to enhance resilience against climate change impacts, including severe drought conditions in the Athens region. This program focuses on network renewal, reducing water loss, expanding sewer connections by approximately 75,000 properties, construction of new wastewater treatment plants, and incorporation of advanced digital monitoring systems to increase service reliability and efficiency. A major recent milestone is the securing of a €250 million financing agreement with the European Investment Bank (EIB) to support these modernization efforts. EYDAP has also emphasized sustainable water management and circular economy practices by promoting water reuse for agricultural irrigation and urban green spaces, aligning with contemporary environmental and ESG priorities.
EYDAP operates predominantly in the water utility industry serving commercial, residential, industrial, and municipal customers across the Athens metropolitan area. The company maintains robust capabilities in managing large-scale water and wastewater infrastructure, distinguished by its high operational standards and scientific research contributions in water quality and treatment innovation. EYDAP's strategic partnerships, regulatory compliance efforts, and sizable investment programs position it as a leader in sustainable urban water management in Southern Europe.