Severn Trent Plc engages in the provision of waste water treatment services. It operates through the following segments: Regulated Water & Waste Water, and Business Services. 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 US, UK & Ireland and the group's renewable energy business. The company was founded in 1974 and is headquartered in Coventry, the United Kingdom.