United Utilities Water Ltd

Water supply arrangements

Company Assets

Number of treatment works

92

Number of service reservoirs 

352

Number of water supply zones

229

Length of mains pipe (km)

42,538km

Population Served

Population Supplied

7,329,000

Number of local authorities

44

Water Supplied

Water Supplied (l/day)

1,831,804,000

Percentage from surface sources

85%

Percentage of ground sources

5%

Percentage from mixed sources

10%

Area of supply

Blackburn with Darwen, Blackpool, Bolton, Bury, Cheshire East, Cheshire West and Chester, Cumbria, Derbyshire, Halton, Knowsley, Lancashire, Liverpool, Manchester, Oldham, Rochdale, Salford, Sefton, St. Helens, Stockport, Tameside, Trafford, Warrington, Wigan, Wirral 

Consumer Contacts

Informing Consumers

Company Figure

Total Number

Rate pet 1,000 population

2019

981

0.14

2020

786

0.11

2021

937

0.13

Industry Average

2021

9,913.96

1.22

Acceptability of water to consumers

Company Figure

Total Number

Rate pet 1,000 population

2019

13,950

1.93

2020

13,379

1.83

2021

13,669

1.87

Industry Average

2021

2,832.12

1.08

Complaints to the Drinking Water Inspectorate

A total of 3 consumers of Thames Water Utilities Ltd directly contacted DWI in 2021.

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