Facts and figures

Last reviewed:

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 5,000 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. We charge just over £1 a day on average - £374 per year for 17/18 - 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 11 years in our network

Water services

  • We supply 2.6 billion litres of drinking water, on average, each day to nine 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 94 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 4.6 billion litres of sewage a day - 24 hours a day, 365 days a year
    • We have 350 sewage works, 109,000km of sewers, 4,780 sewage pumping stations and 1.2 million manholes
    • We reduced our pollution incidents by almost 50% in 2015


      Energy production

      • We are now generating around 15% of our own energy. We produced 127 GWh (a gigawatt is one million kilowatt hours of electricity) of energy from sludge during the first six months of 2016/17 
      • We’ve also been using more solar energy than ever before. Just over 7,200 MWh of solar power was generated by panels on our sites, including Europe’s largest floating solar panel array on our QE2 reservoir