South Staffordshire Water plc known as South Staffs Water is a UK water supply company owned by a privately owned utility company serving parts of Staffordshire the West Midlands as well as small areas of surrounding counties in England. South Staffordshire Water plc is part of South Staffordshire plc. It purchased Cambridge Water in 2011. In 2013, KKR & Co. L.P., a company registered in the United States of America, acquired South Staffordshire Water from Alinda Infrastructure Fund. As of April 2018, KKR & Co. L.P., has agreed to sell its 75% equity stake in South Staffordshire plc to Arjun Infrastructure Partners (AIP). This deal will include South Staffs Water (SSW) and its non-regulated businesses, SSI Services and Echo Managed Services.

South Staffordshire Water provides drinking water to 1.6 million consumers and supplies 330 million litres of water every day across a network of pipes that total 6,000 kilometres (3,700 mi) in length to approximately 500,000 homes and 36,000 businesses customers in an area covering 1,500 square kilometres (580 sq mi). Under Ofwat’s measure of overall service to customers, OPA, the company has been positioned in the top 5 of the generally 20–23 water companies in every year since 1999.

As South Staffordshire Water is a water-only company Severn Trent Water provides all main sewerage services to customers in South Staffordshire’s designated area.