Severn Trent Plc engages in the provision of waste water treatment services. It operates through the Regulated Water and Waste Water; and Business Services segments. The Regulated Water & Waste Water segment includes the wholesale water and waste water activities of Severn Trent Water Limited, its retail services to domestic customers, and Dee Valley Water. The Business Services segment includes the group's operating services businesses in the UK & Ireland and the group's renewable energy business. The company was founded in 1974 and is headquartered in Coventry, the United Kingdom.