 As South Staffordshire Water is a water only company Severn Trent Water provides all mains sewerage services to customers in South Staffordshire's designated area.The South Staffordshire Water supply area covers areas to the north and west of Birmingham.The majority of the supply area is within the counties of Staffordshire and the West Midlands but the company also supplies water to parts of Derbyshire, Leicestershire, Warwickshire and Worcestershire.