Ancient City With A Long-Established Hydraulic Engineering System

One of the largest and oldest cities in the world, İstanbul has an expertise in hydraulic enginering and distribution systems stretching to the 4th century.

İSKİ is Turkey’s Largest Water Management Administration Under A Municipality

İSKİ was founded in 1981 under the governance of İstanbul Governorate with the Law no. 2560 and incorporated into the İstanbul Metropolitan Municipality in 1984 under the Law no. 3009.  The Metropolitan Municipality Law No.5216 enacted in 2005 extended İSKİ’s service area, increasing the number of served districts to 39 from 27. İSKİ’s service area was extended to include Istranca stream basins upon the decree of the Council of Ministers as some of the water resources supplying İstanbul remained outside İstanbul Metropolitan Municipality’s borders

An administration serving a city of 16 million people, İSKİ’s yearly budget has been declared as nearly TRY8 billion.

General information on İSKİ:

  • Service area: 5.461 km2
  • Water network length: 22.000 km
  • Wastewater network length: 17.500 km
  • Water supply volume (daily): 2.733.388 m3
  • Potable water treatment: 21 plants with a daily 4,5 million m3 capacity
  • Wastewater treatment: 88 plants with a daily 5,8 million m3 capacity
  • Water reserve capacity: 150 storage tanks with 1.727.080 m3 capacity

İSKİ Water Investment Program for 2020- 2023:

  • Asian Side Drinking Water Treatment Plant Construction – Cumhuriyet Treatment Plant – 2nd Part
  • Tuzla Wastewater Treatment Plant Sludge Incineration Facility
  • Paşaköy Advanced Biological Wastewater Treatment Plant
  • Sludge Drying Facilities (Ambarlı, Büyükçekmece, Tuzla, Paşaköy, Baltalimanı)
  • Melen Wastewater Tunnel
  • European Side Tunnel Construction 1. Part -Gümüşyaka Wastewater Tunnel
  • Ambarlı Advanced Biological Wastewater Treatment Plant and Sea Discharge System – 2nd Part
  • 4 x Deep Sea Discharge System (Ataköy, Baltalimanı, Yenikapı, Kadıköy)
  • Ataköy Advanced Biological Wastewater Treatment Plant – 3rd Part
  • 15,75 MW Wind Power Plant
  • 10 MW Solar Power Plant
  • Başakşehir Advanced Biological Wastewater Treatment Plant
  • Ömerli Drinking Water Treatment Plant and Pumping Station Equipment
  • Pumping and Engine Projects regarding Potable Water Plants