Please note that annual average bill changes and more information can be found on Discover Water
Annual average bill changes 2026-2027
The changes below will take effect from April 1st 2026. National average water bills for the coming year are forecast to be £639 (a rise of £33 or 5.4%). This equates to an increase of around £2.70 a month.
| Water and wastewater companies | 2026-27 | Change (£) | Change (%) |
| Anglian Water | £674 | £44 | 7% |
| Dwr Cymru (Welsh Water) | £683 | £31 | 5% |
| Hafren Dyfrdwy | £635 | £54 | 9% |
| Northumbrian Water | £535 | £31 | 6% |
| Severn Trent Water | £587 | £52 | 10% |
| South West Water | £740 | £39 | 6% |
| Southern Water | £759 | £55 | 8% |
| Thames Water | £658 | £3 | 0.4% |
| United Utilities | £660 | £57 | 9% |
| Wessex Water | £695 | £17 | 3% |
| Yorkshire Water | £636 | £34 | 6% |
| Water-only companies | 2026-27 | Change (£) | Change (%) |
| Affinity Water [Central region] | £266 | £31 | 13% |
| Affinity Water [East region] | £280 | £1 | 0.4% |
| Affinity Water [South east region] | £294 | £3 | 1% |
| Bournemouth Water | £205 | £11 | 6% |
| Bristol Water | £264 | £29 | 12% |
| Essex and Suffolk Water | £333 | £15 | 5% |
| Portsmouth Water | £162 | £13 | 8% |
| South East Water | £324 | £21 | 7% |
| South Staffs Water [Cambridge region] | £210 | £7 | 3% |
| South Staffs Water [South Staffs region] | £230 | £6 | 2% |
| Sutton & East Surrey Water | £257 | £26 | 11% |
| National Average | £639 | £33 | 5.4% |