‌Average household water bills across the country will increase by £2.75 a month on April 1, taking the typical bill to £639 a year. ‌However, the size of the annual increase varies across the country with different water companies increasing their bills by different amounts. It means the average bill for 2026/7 is expected to be £587 compared to £535 in the current financial year. At the other end of the scale, Thames Water will only be increasing average bills by £3 a year. That is why we will help around 2.5 million households – more than ever before – with average discounts of around 40% off their water bill.”‌Annual change in average bill for each companyUnited Utilities: £57Southern Water: £55Hafren Dyfrdwy: £54‌Severn Trent Water: £52Anglian Water: £44South West Water: £39‌Yorkshire Water: £34Dŵr Cymru (Welsh Water): £31Northumbrian Water: £31‌Affinity Water (Central region): £31Bristol Water: £29Sutton & East Surrey Water: £26‌South East Water: £21Wessex Water: £17Essex and Suffolk Water: £15‌Portsmouth Water: £13Bournemouth Water: £11South Staffs Water (Cambridge region): £7‌South Staffs Water (South Staffs region): £6Thames Water: £3Affinity Water (South east region): £3Article continues belowAffinity Water (East region): £1Get daily headlines and breaking news emailed to you - it’s FREE