Facts and figures

Our business 

  • UK's largest water and wastewater services provider
  • 13.5 million customers
  • 5,000 employees
  • Cheapest provider, with un-metered customers paying an average of 83p per day, and metered customers paying an average of 73p per day
  • Kemble Water Limited, a consortium of institutional investors managed by the Macquarie Capital Funds (Europe) Limited, acquired Thames Water on 1 December 2006

Water services

  • 8.5 million clean water customers in London and the Thames Valley
  • 2,800 million litres of drinking water supplied per day
  • Operation and maintenance of 100 water treatment works, 30 raw water reservoirs, 288 pumping stations and 235 clean water service reservoirs
  • Our tap water costs less than a tenth of a penny per litre
  • Drinking water quality is at its best ever, meeting 99.98 per cent of stringent tests
  • Half a million drinking water quality tests undertaken each year

Sewerage services

  • 13.5 million wastewater customers
  • 4,300 million litres of sewage treated per day
  • 43,500 miles of sewer, 2530 pumping stations and 800,000 manholes 
  • 349 sewage treatment works receiving 4.3 cubic meters of sewage and generating 437 GWh of renewable energy
  • All wastewater treatment facilities are currently operating within Environment Agency compliance guidelines

Then and now

Victorian pipe

Our history dates back to the 1600s with the creation of the new river

Our 25-year plan

Taking care of water - the next 25 years

Taking care of water is our plan for a sustainable future