Suido Kiko Kaisha Ltd. engages in the engineering and construction of water treatment systems. It operates through the following segments: Water and Sewerage, Environment, Equipment, and Others. The Water and Sewerage segment covers the construction, operation and maintenance of water supply, water treatment, and sewerage facilities. It also sells water treatment machinery and equipment. The Environment segment deals with the manufacture and sale of industrial water facility, waste water treatment facility, and waste water re-use facility. The Equipment segment handles the manufacture and sale of chlorine and chemical injection equipment, and measuring equipment. The Others segment includes real estate business. The company was founded in August 1924 and is headquartered in Tokyo, Japan.