With an additional supply of 145 million m3 of water, 2 million Istanbul residents now have access to clean drinking water meeting European standards!

General Directorate of State Hydraulic Works



Greater Istanbul Water Supply Project II.Stage-Yeşilçay System

The objective of Yesilçay Project is to supply 145 million m³ of potable water per year to the city of Istanbul and its surrounding area by diverting and treating water from Sungurlu and Göksu rivers in order to ensure sustained economic growth and to maintain hygiene of approximately 7.5 million inhabitants.

Services Provided

• Preliminary surveys and investigations
• Preparation of detailed designs and contract documents according to FIDIC Conditions of Contract
• Consultancy and construction supervision
• Commissioning
• Capacity Building – Staff training