Athens Water Supply and Sewerage Company

Athens Water Supply and Sewerage Company
Water Supply and Sewerage (EYDAP) of Greece · Public domain · source
Name	Athens Water Supply and Sewerage Company
Native name	Εταιρεία Ύδρευσης και Αποχέτευσης Αθήνας
Formation	1980s
Type	Public utility
Headquarters	Athens
Region served	Attica

Athens Water Supply and Sewerage Company is the principal public utility responsible for potable water supply and wastewater management in the Attica region, serving the City of Athens, Piraeus, and surrounding municipalities. It operates within a legal and regulatory framework shaped by national legislation and European Union directives, interfacing with ministries, regional authorities, and international organizations. The company manages an integrated network of reservoirs, aqueducts, pumping stations, treatment works, and sewer networks supporting millions of residents and businesses in the Attica peninsula.

History

The company's origins trace to mid-20th-century municipal water systems in Athens (municipality), Piraeus (regional unit), and suburban communes such as Kifisia, Marousi, and Nea Smyrni, later consolidated under national reforms influenced by Hellenic Republic legislation and European Community integration. Major development phases included post‑war reconstruction connected to the Marshall Plan era modernization, mid‑century expansion during the Greek economic miracle (1950s–1973), and consolidation during the late 20th century under directives comparable to the Urban Waste Water Treatment Directive and Water Framework Directive. Infrastructure projects aligned with Olympic preparation for the 2004 Summer Olympics in Athens, while debt, privatization debates, and austerity-era reforms intersected with decisions by the Hellenic Parliament and Ministry of Environment and Energy.

Organization and Governance

Governance combines corporate management with public oversight through boards appointed in consultation with national and municipal stakeholders, including representatives from the Hellenic Parliament, Attica Region, and major municipalities such as Kallithea and Glyfada. Executive functions intersect with regulatory instruments from the Hellenic Regulatory Authority for Energy and European agencies like the European Environment Agency. Labor relations involve unions active in Greece such as civil service federations and local municipal unions, while procurement and project finance have attracted contractors including multinational engineering firms and consortia experienced with World Bank and European Investment Bank financing.

Water Supply Operations

Operations cover source development, reservoir management, conveyance via aqueducts, treatment, and distribution through a network serving central Athens, greater Piraeus, and suburbs like Voula and Peristeri. Key source development projects have included interbasin transfers, borehole fields near Boetia, and abstraction from reservoirs such as Marathon Reservoir, which links to the historic Long Walls of Athens catchment area. Treatment processes align with EU standards for potability and monitoring from agencies like the European Food Safety Authority, while operational coordination engages emergency response with services including the Hellenic Fire Service and municipal civil protection units during droughts or contamination events.

Sewerage and Wastewater Treatment

Sewerage planning and construction have targeted combined sewer separation, stormwater management, and collected wastewater conveyance to treatment plants in facilities sited near locations such as Psittalia and coastal treatment zones affecting the Saronic Gulf and Gulf of Elefsina. Treatment plants employ primary, secondary, and tertiary processes to meet standards shaped by the Urban Waste Water Treatment Directive and monitored by the Hellenic Centre for Marine Research where effluent quality affects marine protected areas and port zones serving Piraeus Port Authority (OLP) S.A. and marina infrastructure. Sludge management, energy recovery, and nutrient removal projects have engaged partners from academic institutions including the National Technical University of Athens.

Infrastructure and Facilities

The network includes historic aqueducts, modern concrete reservoirs, high‑capacity pumping stations, and major pipelines crossing municipal jurisdictions such as Elefsina and Koropi. Notable facilities include large-scale treatment plants, service reservoirs near Zografou, and desalination pilot projects linked to research at the Institute of Marine Biology, Biotechnology and Aquaculture. Major capital works have been cofinanced by the European Investment Bank, Cohesion Fund, and national investment programs administered by the Ministry of Infrastructure and Transport, with construction undertaken by Greek firms and international engineering companies experienced in Mediterranean waterworks.

Environmental and Public Health Initiatives

Initiatives focus on water quality protection, watershed restoration, and public health surveillance in coordination with bodies such as the Hellenic Centre for Disease Control and Prevention and the World Health Organization Regional Office for Europe. Programs address non‑revenue water reduction, leak detection, demand management, and public campaigns coordinated with municipal outreach in districts like Nea Ionia and Zografou. Environmental impact assessments for projects interface with conservation efforts in areas near the Hellenikon redevelopment site and coastal ecosystems monitored by the Mediterranean Action Plan.

Finance and Tariffs

Financing blends tariff revenue, municipal transfers, national budget allocations, and loans from multilateral lenders including the European Investment Bank and the Council of Europe Development Bank. Tariff structures are regulated in relation to social policy implemented by ministries such as the Ministry of Labour and Social Affairs and reflect block tariffs, lifeline provisions, and cost recovery principles debated in the Hellenic Parliament and by consumer advocacy organizations. Capital investment programs are subject to procurement law aligned with European Union directives and scrutiny by auditors including the Hellenic Court of Audit.

Category:Water supply and sanitation in Greece Category:Companies based in Athens