As a part of the cooperation among Turkish Water Institute (SUEN), Union of Municipalities (TBB) and Istanbul Water and Sewerage Administration (İSKİ), SUEN gave a series of lectures from 19th to 23rd December 2016 on water treatment to the benefit of water and sewerage administrations from miscellaneous provinces in Turkey (Balıkesir, Samsun, Van, Sakarya, Kahramanmaraş, Adana, Tekirdağ, Malatya, Denizli, Gaziantep, Erzurum, Ankara, Ordu, Mersin and Trabzon). The lectures focused on the developments in treatment technologies and lessons learned in the design of treatment plants.