6% of swimming days were lost in the past year due to combined sewage overflows

Number of CSO discharges October 2019 – September 2020

547

Northumbrian Water

486

United Utilities

259

Yorkshire Water

387

Welsh Water

Severn

Trent

Water

98

Anglian

Water

Thames

Water

79

Southern Water

813

Wessex Water

241

South West Water

Number of CSO discharges October 2019 – September 2020

547

Northumbrian Water

486

United

Utilities

259

Yorkshire Water

Severn Trent

Water

387

Welsh Water

98

Anglian Water

Thames Water

241

South West Water

79

Southern Water

813

Wessex Water

Guardian graphic. Source: Surfers Against Sewage, 2020 Water Quality Report