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PARLIAMENTARY WRITTEN QUESTION
Sewage: Waste Disposal (7 September 2020)

Question Asked

To ask the Secretary of State for Environment, Food and Rural Affairs, what proportion of the combined sewer overflows of each water company have monitoring equipment in place.

Asked by:
James Wild (Conservative)

Answer

The Environment Agency hold data for storm overflows, which includes combined sewer overflows, storm discharges at sewage treatment inlet works, storm tank overflows and storm overflows at pumping stations.

As of 31 December 2019 the numbers of storm overflows and percentage monitored by each Water and Sewerage Company were:

Company

Total number of storm overflow discharges

Number Monitored in 2019 (regulatory and non-regulatory)

Percentage Monitored in 2019 (regulatory and non-regulatory)

Anglian Water

1646

709

43

Dwr Cymru Welsh Water

2318

2110

91

Northumbrian Water

1518

1487

98

Severn Trent

2954

2308

78

Hafren Dyfrdwy

59

48

81

South West Water

1209

759

63

Southern Water

986

986

100

Thames Water

472

377

80

United Utilities

2273

1649

73

Wessex Water

1289

628

49

Yorkshire Water

2246

2185

97

TOTALS

16970

13246

78

The numbers monitored were supplied to the Environment Agency from the Water and Sewerage Companies in England and Wales.

Further monitoring is planned for the period 2020 to 2025 with more than a 1,000 monitoring installations.


Answered by:
Rebecca Pow (Conservative)
15 September 2020

Contains Parliamentary information licensed under the Open Parliament Licence v3.0.