a) Developing policies and strategies on water treatment,
b) To carry out or have planning, research, development and legislative studies on reuse of used water, treated wastewater and drainage water returning from agricultural irrigation, its impact on the quality of water resources and developing alternative water resources
c) Deciding on the quality class of surface water and groundwater from where drinking water is supplied or planned to be supplied,
d) Determining the revision needs of existing water treatment plants in Turkey and reporting to relevant institutions and organizations,
e) Identifying design principles, standards, criteria and norms for water treatment plants,
f) Examining the preliminary projects of the water treatment plants to be made or revised within the scope of the current legislation and approving the projects that are found suitable to implement them, identifying the institutions and organizations authorized to approve the projects,
g) Preparing the evaluation report of water treatment plants,
h) Monitoring national and international developments in treatment technologies, studying on the acquisition of advanced technologies in the country, providing coordination for cooperation between private institutions and public institutions and organizations regarding treatment technologies, and supporting technological research and development studies.
i) Training and certifying the personnel who will operate the treatment plants,
j) Following and reporting national and international studies on the subjects within the scope of the division, preparing legislations and guidance documents on needed issues or to have them prepared, to carry out or have training studies,
k) Performing other duties assigned by the Head of Department.