Facts and figures

Our business

  • We're the UK's largest water and wastewater services provider, with an annual turnover of around £2 billion
  • We have 15 million customers and over 6,000 employees
  • Our service area stretches from the eastern fringes of Gloucestershire and Wiltshire in the west, through London and the Thames Valley, to the western edges of Essex and Kent in the east
  • Our bills are amongst the lowest in the country. The average water bill is £383 per year - for supplying customers with water and treating sewage
  • We have almost 60 million interactions with our customers each year
  • We’ve invested, on average, about £1 billion a year for the last 13 years in our network

Water services

  • We supply 2.7 billion litres of drinking water, on average, each day to ten million people, and carry out more than 400,000 water quality tests on water samples each year, an average of more than 1,000 a day
  • Our tap water quality is amongst the best in the world
  • We operate 97 water treatment works, 26 raw water reservoirs, 308 pumping stations, and 235 clean water service reservoirs
  • We've now installed over 250,000 smart water meters

    Sewerage services

    • We recycle 15 million people's wastewater safely back to the environment. That's 4.4 billion litres of sewage a day - 24 hours a day, 365 days a year
    • We have 351 sewage works, 100,000km of sewers, 4,780 sewage pumping stations and 1.2 million manholes


      Energy production

      • We self-generate one fifth of our electricity needs, the equivalent of £30 million a year in energy costs
      • In 2017/18, we produced 293GWh of electricity from renewable sources including sludge treatment, wind and solar power
      • We’ve installed Europe’s largest floating solar panel array on our QE2 reservoir. Last year it provided our Hampton Water Treatment Works with 14% of it's electricity needs