The total service area of ISKI is 5,342 square km. Within this service area, the municipality manages watermains totalling 15,586 km in length and sewers totalling 12,714 km in length. The transport mains and distribution networks are monitored using the SCADA system.
To manage these networks, ISKI has completed many local and international projects and investments in water/waste management and wastewater treatment. As a result of these projects, ISKI has 13 water treatment plants, with a combined capability of processing 3,608,000 cubic metres per day, and 15 wastewater treatment plants in different provinces of Istanbul. As Istanbul continues to grow, ISKI continues to build more facilities to cope with the ever expanding population.
ISKI has determined all of its key targets until 2040 through a Master Plan for water supply and wastewater discharging. The Master Plan accounts for metrics such as population, water requirements, water resources, water purification, and the recycling potential of treated wastewater.
ISKI is currently microtunnelling three new sewage collectors that will provide Turkey’s inland Marmara Sea with better environmental protection.
Ankara – ASKI
Ankara is the capital of Turkey, and the country’s second largest city after Istanbul. The Ankara Municipality was created in 1949, but it wasn’t until the municipality management model was created in 1980 that the Ankara Water and Sewerage Authority (ASKI) was created.
This change brought in a new era of infrastructure works, including:
- Watershed protection
- Provision of groundwater and surface water drinking water sources
- Distribution of treated drinking water
- Regularly maintenance checks of the city’s water quality
- Ongoing maintenance and repairs of networks and plants.
Ankara’s municipal boundaries expanded between 1985–2010, leading to a number of planned projects to cope with the water demand. At the end of 1999, ASKI had constructed 5,138 km of transmission mains, 74 water reservoirs, and 39 pumping stations. Future projects include constructing 54 new water storage facilities, 25 pumping stations, and the expansion of the municipalities distribution network, which is comprised of prestressed concrete, steel and ductile piping.
ASKI has a rigorous leak detection unit, which utilises acoustic monitoring systems, correlation systems, data logger systems, flow measurement and pressure measurement to minimise water losses.