South West Water logo

South West Water Services Limited is a water supply and sewerage utility company serving part of south west England. It was originally formed by the Water Act 1973 as one of ten regional water authorities formed by a merger of various statutory and local authority water undertakings. South West Water was privatised in 1989, and is part of the Pennon Group.

Southern Water logo

Southern Water is the utility responsible for wastewater collection and treatment in Hampshire, the Isle of Wight, West Sussex, East Sussex and Kent, and for water supply and distribution in the approximately half of this area.

Northern Ireland Water logo

Northern Ireland Water is an Executive Agency within the Department for Regional Development. The company provides water and sewerage services to over 730,000 domestic, agricultural, commercial and business customers throughout Northern Ireland with an annual budget before capital charges of £302 million and fixed assets valued at £4.9 billion.

Affinity Water logo

Affinity Water are the largest water-only supplier in the UK. They provide 900 million litres of water each day to a population of more than 3.5 million people in parts of Bedfordshire, Berkshire, Buckinghamshire, Essex, Hertfordshire, Surrey, the London Boroughs of Harrow and Hillingdon and parts of the London Boroughs of Barnet, Brent, Ealing and Enfield.

Scottish Water logo

Scottish Water is a state-owned company in Scotland that provides water and sewerage services to 2.2 million customers and 130,000 business customers.

United Utilities logo

United Utilities provides clean, fresh water for about 7 million people and 200,000 businesses in the North West of England. They also take away and treat the North West’s wastewater helping keep the rivers and beaches clean.

Thames Water logo

Thames Water is the UK’s largest water and sewerage company, serving 14 million customers across London and the Thames Valley.

Irish Water logo

Irish Water is Ireland’s new national water utility. It has been tasked with bringing the water services of the 34 Local Authorities together into one national service provider, with the aim of reducing costs, generating economies of scale and increasing efficiencies. Over the coming months and years Irish Water will gradually establish the organisation and take over responsibility from the local authorities for the delivery of water and wastewater services to homes and businesses.