| Anglian Water: Provides water and environmental services to customers worldwide. Education subsection provides detailed factsheets for schoolchildren. |
| Bournemouth and West Hampshire Water: Provides water to Dorset, Hampshire and Wiltshire. Promotes environmental issues through Waterwise. |
| Bristol Water: Provides water services to the city of Bristol. Comprehensive details of leisure activities, including fishing, birdwatching and local nature trails. |
| Cambridge Water Company: Water suppliers to customers in South Cambridgeshire. Offers free hogs and hippo bags for toilet cisterns. |
| Dwr Cymru Welsh Water: Supplies water, sewerage and trade effluent services to customers in Wales and parts of England. Comprehensive information to customers available in Welsh and English. |
| Essex and Suffolk Water: Part of Northumbrian Water Group providing water in eastern England. Company and environmental information, service details and payment form. |
| Folkestone and Dover Water Services Ltd: Water suppliers in the south east of Kent. Information for customers. |
| Isle of Man Government Water Authority: Water services for the Isle of Man. Sections on leisure, recruitment and up to date news. |
| Kelda Group plc: Water, environmental, waste management, laboratory and energy services. Principal subsidiary is Yorkshire Water. |
| Mid Kent Water: Details for commercial and domestic customers. Features education section including arcade style games. |
| North West Water: Providing water and wastewater services in northwest England. Company is part of United Utilities, which is reflected in the site. |
| Northumbrian Water Limited: Features information about outdoor activities, including boating, windsurfing, cycling and canoeing on or around Kielder Water. |
| Portsmouth Water: Provides water services in Hampshire. Customer service, news, educational and environmental information. |
| Scottish Water: A new organisation replacing East of Scotland Water, North of Scotland Water and West of Scotland Water. |
| Severn Trent: An environmental services group that provides water, waste and utility services. Principal owner of Severn Trent Water. |
| Severn Trent Water: Provides information on a wide range of customer services and educational information, to water conservation and environmental issues. |
| South East Water: Water utility serving the South East of England. Includes customer information, job opportunities, environmental resources and search facility. |
| South Staffordshire Group: The group operates in three main business areas: Water Supply with South Staffordshire Water, HomeServe and Commercial Outsourcing. |
| South Staffordshire Water Plc: Recently relaunched site celebrating the company's 150th anniversary year. Large section dedicated to kids. E-billing available for customers. |
| South West Water: Water and waste water services for the West Country. Details on the Clean Sweep programme, customer and corporate information. |
| Southern Water: Water and sewerage services covering Southern England. Consumer advice and information plus corporate details. |
| Sutton and East Surrey Water: Offers ebilling services plus customer and local information. Includes archive of the customer magazine Pipelines. |
| Swan Group plc: Parent company to Mid Kent Water, inenco group, Eclipse Scientific and Halcrow Water Services. Product, service and company information. |
| Tendring Hundred Water: Supplies water to the Tendring peninsula in Essex. Part of the Vivendi group. |
| Thames Water: Comprehensive site covering the activities of the worlds third largest water provider. |
| Three Valleys Water: A water only utility supplying water to the Home Counties and the South East of England. Part of the Vivendi Group. |
| United Utilities: Providers of water, electricity and telephony services in the North West of England. |
| Water Service - Northern Ireland: Executive Agency within the Department for Regional Development that provides water services for the area. Tender opportunities available to businesses. |
| Wessex Water: Provides water services across Southwestern England. Information on company activities with education and recreational resources. |
| Yorkshire Water Services: Features consumer, corporate, environmental and leisure information including photo gallery of local beauty spots. |
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