Severn Trent Plc treats and provides water and removes wastewater in the United Kingdom and internationally. The Company provides clean water and wastewater services through its businesses, Severn Trent Water and Severn Trent Business Services. It operates through two segments: Regulated Water and Waste Water, and Business Services. The Regulated Water and Waste Water segment includes Severn Trent Water Limited's wholesale operations and household retail activities, and related support functions. The Business Services segment includes the Operating Services businesses in the United States, the United Kingdom, Ireland and Italy; its renewable energy business, and Severn Trent Water Limited's non-household retail business. The United Kingdom Operating Services provides contract services to municipal and industrial clients, and the United Kingdom Ministry of Defense (MOD). The United States Operating Services provides contract services to community, municipal and industrial clients.