Southern Water Services Ltd 

Water supply arrangements

Company Assets

Number of treatment works

86

Number of service reservoirs 

214

Number of water supply zones

76

Length of mains pipe (km)

13,973km

Population Served

Population Supplied

2,597,000

Number of local authorities

34

Water Supplied

Water Supplied (l/day)

564,102,000 

Percentage from surface sources

26%

Percentage of ground sources

62%

Percentage from mixed sources

12%

Area of supply

Brighton and Hove, East Sussex, Hampshire, Isle of Wight, Kent, Medway, Southampton, West Sussex

Consumer Contacts

Informing Consumers

Company Figure

Total Number

Rate per 1,000 population

2019

469

0.18

2020

351

0.14

2021

583

0.22

Industry Average

2021

9,913.96

1.22

Acceptability of water to consumers

Company Figure

Total Number

Rate per 1,000 population

2019

3,074

1.21

2020

2,766

1.08

2021

2,823

1.09

Industry Average

2021

2,832.12

1.08

Complaints to the Drinking Water Inspectorate

No consumers of Southern Water Services Ltd directly contacted DWI in 2021. 

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