South West Water remains the worst performing company for combined sewage overflows discharge in 2020

2019

2020

CSO discharge notifications per 10,000km of sewage network

50

0

100

150

South West Water

Wessex Water

Northumbrian Water

Welsh Water

United Utilities

Southern Water

Yorkshire Water

Anglian Water

2019

2020

200 CSO discharge notifications per 10,000km of sewage network

150

100

50

0

Wessex

Water

Northumbrian

Water

Welsh

Water

United

Utilities

Southern

Water

Anglian

Water

South

West Water

Yorkshire

Water