Reservoirs: Construction
(asked on 13th May 2025) - View Source
Question to the Department for Environment, Food and Rural Affairs:
To ask His Majesty's Government, further to the Written Answer by Baroness Hayman of Ullock on 12 May (HL7055), which sites are being considered for the potential ten new reservoirs; and on what timescale they intend that the new reservoirs should become operational.
Answered by
Baroness Hayman of Ullock
Parliamentary Under-Secretary (Department for Environment, Food and Rural Affairs)
The following new reservoir sites (with a capacity above 10 million litres per day) have been identified in water company’s latest statutory water resources management plans, with their capacity and expected completion date provided in the table below.
Reservoirs | Water company | Daily supply (Ml/d) | Start year |
Broad Oak | South East Water | 12.6 | 2033 |
Cheddar 2 | South West Water | 13 | 2035 |
Fens | Anglian Water, Cambridge Water | 87 | 2036 |
Mendips Quarry | South West Water | 46 | 2042 |
River Adur offline reservoir | Southern Water | 19.5 | 2045 |
South East Strategic Resource Option | Thames Water, Affinity Water, Southern Water | 293 | 2039 |
South Lincs | Anglian Water | 166.5 | 2040 |
North Suffolk | Essex and Suffolk Water | 19.9 | 2040 |
West Midlands | Severn Trent Water | 32.5 | 2040 |
In addition to the nine sites above, work is already underway on Portsmouth Water’s Havant Thicket reservoir, as set out in the company’s WRMP19. This will supply an expected 21 Ml/d, with a latest forecast completion date of 2031-32.
The one reservoir enlargement is set out below.
Reservoir enlargement | Water company | Daily supply (Ml/d) | Start year |
Tittesworth | Severn Trent Water | 14 | 2049 |