# United Kingdom water companies

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

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 | Service area | 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 |
| Northumbrian Water | North East England | Northumbrian Water Group Lid | Official website |
| Severn Trent Water | West Midlands, East Midlands, Chester | As at 1 March 2017, the company's issued share capital consists of 239,791,170 ordinary shares of 97 17/19 pence each with voting rights. As at 1 March 2017, the Company holds 4,080,964 shares in Treasury.https://otp.tools.investis.com/clients/uk/severn_trent_plc/rns/regulatory-story.aspx?cid=1487&newsid=849180 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 |
| Welsh Water | West Midlands, (Wales) | Glas Cymru | 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 | Website |
| 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 | Allianz/HICL Infrastructure/DIF Tamblin | Official website |
| Albion Water | Knowle Village (Hampshire), Oaklands Hamlet (Chigwell), Upper Rissington (Gloucestershire) | Albion Water Group Limited | Official website |
| Bournemouth Water | Bournemouth, Christchurch, Lymington, Ringwood, Verwood, Wimborne Minster | Pennon Group | Official website |
| Bristol Water | Bristol, Burnham-on-Sea, Frome, Tetbury, Wells, Weston-super-Mare | Pennon Group | Official website |
| Cambridge Water Company | Cambridge, St Ives | South Staffordshire Water | Official website |
| Cholderton and District Water Company | Amport, Bulford, Cholderton, Quarley, Shipton Bellinger, Thruxton | Cholderton Estate | Official website |
| 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 | Official website |
| Hartlepool Water | Hartlepool | Anglian Water | Official website |
| Portsmouth Water | Bognor Regis, Chichester, Fareham, Gosport, Havant, Hayling Island, Portsmouth | Ancala | |
| 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 | Utilities Trust of Australia/Desjardins Group/NatWest Group Pension Fund | |
| 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 | Pennon Group | |
| Youlgrave Waterworks | Youlgrave | Independent non-profit | Official website |

## Wales

| Company | Service area | Parent | Website |
| Dŵr Cymru Welsh Water | Wales, (West Midlands) | Glas Cymru | Official website |
| Hafren Dyfrdwy | Wrexham, Powys | Severn Trent | Official website |

## Scotland

* Scottish Water (government)
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)
* Manx Utilities Authority (government)