Storm overflow register · 2025 annual return
Northumbrian Water storm overflows, 2025
Northumbrian Water reported 1,561 storm overflows in England for 2025. Together they recorded 27,860 spills over 123,803 hours, an average of 17.8 spills per overflow against 20.4 across England. That ranks 5 of 10 companies, where 1 is the fewest spills per overflow. Counting the same overflows in both years, spills were down 32% on 2024.
255 overflows did not spill · 69 spilled more than 60 times · 1,359 had monitors working for 90% of the year or more · 183 sewage treatment works with overflows
Hours spilling by month, 2025
All Northumbrian Water storm overflows
Sorted by hours spilling. Open an overflow for its permit, location, reasons for high spills and improvement status.
| Overflow | Discharges to | Spills 2025 | Hours 2025 | Spills vs 2024 | Monitor uptime |
|---|---|---|---|---|---|
Woolsington Sewage System
|
Ouse Burn | 0 | 0.0 | down 100% | 85% |
Workingmen'S Club CSO
|
Coxhoe Beck | 0 | 0.0 | down 100% | 100% |
Wormhill Terrace CSO
|
Biddick Burn | 0 | 0.0 | no change | 93% |
Yarm Road / Muirfield Road CSO
|
Trib of River Tees | 0 | 0.0 | no change | 94% |
York Hill PS (SE034)
|
Nicky Nack Beck | 0 | 0.0 | no change | 100% |
Stella Road CSO
|
Clvrt Watercrse River Tyne | 0 | 0.0 | no change | 93% |
Alwinton STW
|
Hosedon Burn | 0 | 0.0 | no change | 100% |
Alwinton STW
|
Hosedon Burn | 0 | 0.0 | down 100% | 100% |
CSO u/s of Dalton Le Dale SPS
|
Dawdon Dene | 0 | 0.0 | 66% | |
Fourstones STW High Level CSO
|
River South Tyne | 0 | 0.0 | 96% | |
Water Lane CSO, Loftus
|
Loftus Beck | 0 | 0.0 | 94% |
Sewage treatment works
Storm tanks and inlet overflows at each Northumbrian Water sewage works. The figures are 2025 spills.
- Aldbrough 0
- Aldin Grange 40
- Allendale 106
- Alnwick 123
- Alwinton 0
- Amble 91
- Aycliffe 20
- Barkers Haugh 41
- Barnard Castle 29
- Barningham 10
- Barton 43
- Belford 35
- Bellingham 83
- Belmont 8
- Berwick Upon Tweed 39
- Billingham 105
- Birtley 44
- Bishop Middleham 21
- Bishopton 31
- Blanchland 5
- Blyth 31
- Boldron 19
- Boulmer 43
- Bowburn 62
- Bowes 34
- Bowsden 42
- Bradbury 11
- Bran Sands Ww Treatment Works 70
- Brancepeth 44
- Branxton 75
- Broomhaugh 9
- Broomley 4
- Browney 16
- Butterknowle 82
- Cambois 72
- Carlton And Redmarshall 37
- Carlton In Cleveland 89
- Cassop 38
- Causey 0
- Chatton 7
- Chester Le Street 40
- Cockfield 22
- Colwell 77
- Consett 46
- Cotherstone 161
- Cramlington 53
- Crookhall 95
- Crookham 16
- Dipton 63
- Dunstan 4
- Durham University 42
- East Howle 23
- East Tanfield 129
- Edmondsley 45
- Eglingham 11
- Ellingham 0
- Elsdon 18
- Embleton 58
- Eppleby 26
- Esh Winning 47
- Etal 88
- Falstone And Stannersburn Ps 48
- Falstone And Stannersburn Sewage Trea 8
- Felton 116
- Fenwick 77
- Fir Tree 56
- Fishburn 29
- Fourstones 12
- Frosterley 52
- Gainford 43
- Graythorp 94
- Great Ayton 50
- Great Broughton 56
- Greatham 84
- Gribdale Terrace 14
- Guisborough Emergency 9
- Gunnerton 69
- Haggerston Castle 10
- Haltwhistle 107
- Hamsterley 97
- Harbottle 39
- Hawthorn 50
- Haydon Bridge 25
- Heddon On The Wall 53
- Hendon Preliminary Treatment Works 70
- Hepple 3
- Hepscott 17
- Hexham 43
- High Reflief 0
- Hollinside 0
- Holy Island 9
- Horden 26
- Horncliffe North 5
- Howdon 269
- Humshaugh 56
- Hustledown 23
- Hutton Rudby 10
- Ingleby Greenhow 33
- Joyce Terrace And Deerness View 17
- Kelloe 9
- Kirklevington 19
- Knitsley 41
- Lanchester 37
- Lanehead 63
- Leamside 37
- Lockhaugh 67
- Long Newton 8
- Longbyre 1
- Longhirst 16
- Longhorsley 39
- Low Wadsworth 62
- Lowick 117
- Lynemouth 28
- Manfield 0
- Marske 99
- Melkridge 27
- Melsonby 15
- Mickleton 37
- Middleton In Teesdale 81
- Milfield 83
- Moorsholm 113
- Mordon 32
- Morpeth 33
- Nenthead 84
- Netherton 8
- New Moors 55
- Newbiggin 139
- Newfield 96
- Norham 25
- Ogle 5
- Old Cleatlam 12
- Otterburn 120
- Ovington 21
- Pegswood 20
- Pity Me 16
- Plawsworth 34
- Portrack 110
- Powburn 38
- Ramshaw 77
- Romaldkirk 24
- Rookhope 59
- Rothbury 13
- Sacriston 27
- Sadberge 25
- Satley 50
- Scots Gap 66
- Seaham 25
- Seaton Carew 68
- Sedgefield 15
- Sedgeletch 131
- Sherburn 32
- Shilbottle 74
- Slaley 78
- Staindrop 9
- Stamfordham 1
- Stanhope 29
- Stokesley 15
- Stressholme 30
- Swainby 72
- Thropton And Snitter 34
- Tindale 19
- Togston 56
- Tow Law 150
- Trimdon Village 68
- Tudhoe Mill 87
- Ulgham 31
- Vinovium 13
- Wall 55
- Wallridge 10
- Warden Village 3
- Wark 46
- Washington 16
- Western Area 107
- Whalton 14
- Whittingham 49
- Whittle Colliery Village 11
- Whorlton 19
- Willington 37
- Windlestone 24
- Winston 45
- Witton Gilbert 37
- Wolsingham 44
- Wooler 68
← All water companies · Contains Environment Agency data licensed under the Open Government Licence v3.0. How to read the data.