Environmental engineering is a branch of engineering related to the use of natural resources and the creation of environmental conditions suitable for human health. Unlike other branches of engineering, it is an engineering branch that tries to give back what they have, not consuming nature's resources. The main working areas of environmental engineers are; water and wastewater treatment, air pollution control, solid waste disposal, soil pollution, etc. dir. The main field of activity of Environmental Engineering, which is an "engineering" branch, is to search for technological solutions and determine the measures to be applied for the disposal of wastes mixed with water, air and soil. Machinery, construction, chemistry and biology branches are also used in the treatment projects applied for the treatment of these wastes, which mostly originate from industrial facilities. The design, construction and operation of domestic and industrial wastewater treatment plants, water networks, water supply lines, and the design and construction of sewage systems can be listed as the most important issues of environmental engineers. Environmental Engineering also deals with issues such as drinking water treatment, recycling and reuse of wastewater, preparation of an environmental impact report, air and soil pollution, in-plant process control and research on cleaner production technologies.