The production process in coal mining consists of wastewater, internal waters during coal extraction, machinery equipment cooling components and for dust control. It also consists of wastewater from flood waters in the coal preparation process and coal storage facilities. The effects of coal on the environment and human health are caused by the contamination of various receiving environments such as consumers, water, air and human health, which is in its content or as a result of combustion, from soil content. Coal is mostly composed of organic matter, and depending on the geographical region and bed it is formed, it contains various heavy metals such as lead, mercury, nickel, tin, cadmium, antimony and arsenic as trace elements, and uranium, thorium and strontium as radioactive elements. The main pollutants in wastewater are; iron, manganese, aluminum, TSS and dissolved solids. Due to the presence of different minerals and negatively and positively charged ions, wastewater may show slightly acidic or alkaline properties. As Setaş, we provide the most appropriate technology and engineering services to bring the wastewater of coal preparation, processing and power generation facilities to the desired discharge levels.