How much does your water company leak?

The water industry in England and Wales loses 3.36 billion litres of water a day in leaks.
The water companies are investing in improvements to their network and leaks are now 35% lower than in the mid-1990s.
However, if all the pipes could be fixed it would save enough water to supply 22.4 million people every day.

One person uses 150 litres of water per day on average.
Find out how much your provider leaks.
Thames Water loses 664.6 million litres of water per day. That's enough to supply 4,430,400 people or 50% of their domestic users.

How do they rate?

Major water companies in England and Wales ranked by the percentage of their supply that is lost in leaks
Leaks in 2010-11, litres per day Water supplied 2010-11, litres per day
  • 0.5bn
  • 1bn
  • 1.5bn
  • 2bn
  • 2.5bn
  • Severn Trent Water
    27%
     
  • United Utilities Water
    26%
     
  • Thames Water
    26%
     
  • Yorkshire Water
    25%
     
  • South Staffordshire Water
    24%
     
  • Dwr Cymru Welsh Water
    24%
     
  • Northumbrian Water
    22%
     
  • Veolia Water Central
    21%
     
  • Wessex Water
    21%
     
  • South West Water
    20%
     
  • Anglian Water
    19%
     
  • Bristol Water
    18%
     
  • Cambridge Water
    18%
     
  • Veolia Water Southeast
    18%
     
  • Veolia Water East
    17%
     
  • South East Water
    17%
     
  • Portsmouth
    16%
     
  • Southern Water
    16%
     
  • Sutton & East Surrey Water
    15%
     
  • Dee Valley Water
    15%
     
  • Sembcorp B’mouth Water
    14%
     
  • Essex & Suffolk Water
    14%
     
Source: Ofwat, Environment Agency, water companies

The water companies are investing in improvements to their networks and are set targets for leaks by the water regulator, Ofwat.

Since 2005, the companies ranked in the top five above - Severn Trent Water, United Utilities Water, Thames Water, Yorkshire Water and South Staffordshire Water - have reduced leaks by a combined amount of 226.86 million litres a day.

Thames Water has shown the most improvement, reducing its leaks by almost a quarter over that period.

In 2011, six companies missed their leakage targets: Anglian Water, Dwr Cymru Welsh Water, Northumbrian Water, Severn Trent Water, Southern Water, Yorkshire Water.

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