United Kingdom water companies

United Kingdom water and sewerage companies

Anglian Scottish Northern Ireland Thames Southern South West Welsh Severn Trent Wessex Northumbrian United Utilities Yorkshire

Water only suppliers not shown

Water supply and sanitation in the United Kingdom is provided by a number of water and sewerage companies. Twelve companies and organisations provide drainage and sewerage services, each over a wide area, to the whole United Kingdom; and supply water to most customers in their areas of operation. There are also 'water only' companies which supply water in certain areas. Some companies are licensed to supply water or sewerage services using the networks of other providers.

England and Wales

Further information: Water supply and sanitation in England and Wales

In England and Wales the economic regulator of water and sewerage is Ofwat and the quality regulator is the Drinking Water Inspectorate.

Water and sewerage

Company	Approximate areas served	Parent	Website
Anglian Water	East of England	Consortium consisting of Canada Pension Plan Investment Board, Colonial First State Global Asset Management, IFM Investors and 3i	Official website
Dŵr Cymru Welsh Water	Wales	Glas Cymru	Official website
Northumbrian Water	North East England	Cheung Kong Infrastructure Holdings	Official website
Severn Trent Water	West Midlands, East Midlands	None (listed on London Stock Exchange)	Official website
Southern Water	South East England	Greensands Holdings	Official website
South West Water	South West England	Pennon Group	Official website
Thames Water	Greater London, Thames Valley	Kemble Water Limited	Official website
United Utilities	North West England	None (listed on London Stock Exchange)	Official website
Wessex Water	South West England	YTL Corporation	Official website
Yorkshire Water	Yorkshire and the Humber	Kelda Group	Official website

Water only

Company	Supply area	Owner
Affinity Water	Central region: Amersham, Barnet, Beaconsfield, Bishop's Stortford, Harlow, Harrow, Hemel Hempstead, Letchworth, Luton, Saffron Walden, St Albans, Staines, Stevenage, Uxbridge, Watford, Welwyn Garden City, Woking East region: Brightlingsea, Clacton-on-Sea, Frinton-on-Sea, Harwich, Manningtree, Wivenhoe Southeast region: Dover, Folkestone, Hythe, Romney Marsh, Dungeness, Lydd	Morgan Stanley/M&G Investments
Albion Water		Albion Water Group Limited
Bournemouth Water	Bournemouth, Christchurch, Lymington, Ringwood, Verwood, Wimborne Minster	Pennon Group
Bristol Water	Bristol, Burnham-on-Sea, Frome, Tetbury, Wells, Weston-super-Mare	Grupo Agbar
Cambridge Water Company	Cambridge, St Ives	South Staffordshire Water
Cholderton and District Water Company	Amport, Bulford, Cholderton, Quarley, Shipton Bellinger, Thruxton	Cholderton Estate
Dee Valley Water	Chester, Wrexham	independent
Essex and Suffolk Water	Essex region: Basildon, Brentwood, Chelmsford, Southend-on-Sea, Thurrock, Barking and Dagenham, Havering, Redbridge Suffolk region: Aldeburgh, Eye, Great Yarmouth, Lowestoft, Southwold	Northumbrian Water Group
Hartlepool Water	Hartlepool	Anglian Water
Portsmouth Water	Bognor Regis, Chichester, Fareham, Gosport, Havant, Hayling Island, Portsmouth	independent
South East Water	Eastern region: Ashford, Canterbury, Eastbourne, East Grinstead, Haywards Heath, Maidstone, Sevenoaks, Tonbridge, Royal Tunbridge Wells, Whitstable Western region: Aldershot, Basingstoke, Bracknell, Camberley, Maidenhead, Petersfield, Wokingham	Hastings Diversified Utilities Fund/Utilities Trust of Australia
South Staffordshire Water	Aldridge, Brownhills, Burton upon Trent, Cannock, Kinver, Lichfield, Rugeley, Sutton Coldfield, Tamworth, Uttoxeter, Walsall, West Bromwich	independent
Sutton and East Surrey Water	Cobham, Dorking, Horley, Leatherhead, Oxted, Redhill, Reigate, Sutton	Sumitomo Corporation
Youlgrave Waterworks	Youlgrave	independent non-profit

Scotland

• Scottish Water (government)

Although Business users receive the services via a Licensed Provider and Scottish Water act as Wholesaler.

Northern Ireland

• Northern Ireland Water (government)

Crown dependencies

• Jersey Water (private)
• Guernsey Water (government)
• Isle of Man Water Authority (government)