COŞKUN WATER TREATMENT SYSTEMS was established in 2003 to serve in the field of environmental technologies. Our company, which carries out all its manufacturing in-house, is a firm that pays attention to quality, values post-sales service, and has accredited its quality with quality certificates such as ISO 9001:2008, ISO 14001:2004, and TSEK in internationally accredited institutions. In terms of wastewater treatment systems, our company provides successful services to many sectors both domestically and internationally. Coskun Water Treatment Systems' registered trademark in biological treatment plants is BioCAS. The BioCAS brand represents trust, quality, and satisfaction.