Comparison
UK water companies compared
Reported leakage across the major UK water and sewerage companies.
Side by side
| Metric | Thames Water | Severn Trent Water | United Utilities | Yorkshire Water | Anglian Water | Southern Water | Northumbrian Water | Dŵr Cymru Welsh Water | Scottish Water |
|---|---|---|---|---|---|---|---|---|---|
| LeakageMl/d | 570.02024 | 400.02024 | 415.02024 | 260.02024 | 175.02024 | 85.02024 | 130.02024 | 165.02024 | 455.02024 |
Leakage
Water lost from the distribution network and from customer supply pipes through physical escape, expressed as a daily volume.
Absolute leakage scales with the size of the company, so it must not be used to rank utilities of different sizes. Use litres per property per day or leakage per kilometre of main for comparison.
View the data behind this chart
| Subject | Value (Ml/d) | Notes |
|---|---|---|
| Thames Water | 570.0 | — |
| Severn Trent Water | 400.0 | — |
| United Utilities | 415.0 | — |
| Yorkshire Water | 260.0 | — |
| Anglian Water | 175.0 | — |
| Southern Water | 85.0 | — |
| Northumbrian Water | 130.0 | — |
| Dŵr Cymru Welsh Water | 165.0 | — |
| Scottish Water | 455.0 | — |