Public water supply in Ankara is managed by three separate agencies, DSI (State Hydraulic Works), Ministry of Environment and Forestry and ASKI (Ankara Municipal Water Authority), each with separate and interrelated responsibilities.

ASKI serves more than 4 million customers with water in Ankara. It operates more than 10,000 km of water transmission and distribution mains. Before beginning the leakage detection survey, there was about 36% of its water lost from pump. Leakage was due to bad condition of pipeline and the transmission main was over 30-year-old.

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There are a total of 9 water treatment plants feeding Ankara city centre and district centres. Water is purified with modern methods and water is supplied to the network in accordance with Turkish Standards and World Health Organization (WHO) limit values. Conventional and membrane type drinking water treatment methods are used as treatment technology.

The 9 water treatment plants in Ankara, and they are: İvedik Drinking Water Treatment Plant, Çubuk Drinking Water Treatment Plant, Kahramankazan Drinking Water Treatment Plant, Beypazarı Drinking Water Treatment Plant, Kesikköprü Tepeköy Drinking Water Treatment Plant, Pursaklar Drinking Water Treatment Plant, Şereflikochisar Drinking Water Treatment Plant, Polatlı Yüzükbasi Drinking Water Treatment Plant and Bala Karadalak Drinking Water Treatment Plant.

Which of the following is a possible water purification method? Click on the button of your choice to see if the solution is correct.