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

Hours spilling, all Northumbrian Water overflows, from the start/stop records. Spills running across a month end are split between the months.

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
Salisbury PS Storm discharge at pumping station EA ID / permit NWL01138 · 245/1047 Outlet location NZ2837045893 (OS grid reference) · View on Apple Maps WFD catchment Wear from Croxdale Beck to Lumley Park Burn (GB103024077621) 2024 spills / hours 3 / 7.5 Long-term average 5.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.6 hours spilling →	Wear	2	0.6	down 33%	100%
Chopwell Park Footpath CSO Overflow on sewer network EA ID / permit NWL00280 · 234/1123 Outlet location NZ1200258113 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 5 / 3.0 Long-term average 8.8 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 0.5 hours spilling →	Tongue Burn	4	0.5	down 20%	100%
Glebe Estate CSO Overflow on sewer network EA ID / permit NWL00594 · 255/1124 Outlet location NZ4068050390 (OS grid reference) · View on Apple Maps WFD catchment Seaton Burn to North Sea (GB650301500002) 2024 spills / hours 3 / 0.8 Long-term average 3.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Seaton Burn	3	0.5	no change	94%
Mill Cottages CSO Overflow on sewer network EA ID / permit NWL00884 · 241/1119 Outlet location NZ0304136761 (OS grid reference) · View on Apple Maps WFD catchment Wear from Middlehope Burn to Houselop Beck (GB103024077461) 2024 spills / hours 6 / 3.0 Long-term average 5.5 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Wear	3	0.5	down 50%	100%
Opp Old Castleside STW CSO Overflow on sewer network EA ID / permit NWL00983 · 234/1135 Outlet location NZ0724049100 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 4 / 2.8 Long-term average 8.8 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 0.5 hours spilling →	Wharnley Burn (Derwent)	4	0.5	no change	100%
Otterburn Crescent CSO Overflow on sewer network EA ID / permit NWL00986 · 245/1367 Outlet location NZ3291950302 (OS grid reference) · View on Apple Maps WFD catchment Lumley Park Burn from Source to Herrington Burn (GB103024077580) 2024 spills / hours 4 / 3.3 Long-term average 3.1 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Moors Burn Trib	1	0.5	down 75%	100%
Scotswood NO1 SPS Storm discharge at pumping station EA ID / permit NWL01148 · 235/1673 Outlet location NZ2123963426 (OS grid reference) · View on Apple Maps WFD catchment River Tyne Estury (GB510302310200) 2024 spills / hours 8 / 4.2 Long-term average 6.2 spills a year (monitored since 2020) Monitor below 90% Comms failure / issue · Resolved - Aug Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	River Tyne	4	0.5	down 50%	85%
The Oval CSO Overflow on sewer network EA ID / permit NWL01371 · 235/1839 Outlet location NZ2547054860 (OS grid reference) · View on Apple Maps WFD catchment Team from Source to Tyne (GB103023075670) 2024 spills / hours 6 / 5.5 Long-term average 4.0 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Trib Rowletch Burn	4	0.5	down 33%	93%
Vinovium CSO No A9 Overflow on sewer network EA ID / permit NWL01433 · 242/C/0368 Outlet location NZ2065130313 (OS grid reference) · View on Apple Maps WFD catchment Wear from Beechburn Beck to Gaunless (GB103024077463) 2024 spills / hours 3 / 1.0 Long-term average 2.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	River Wear	1	0.5	down 67%	100%
Waterville Road CSO Overflow on sewer network EA ID / permit NWL01466 · 235/1898 Outlet location NZ3469767619 (OS grid reference) · View on Apple Maps WFD catchment River Tyne (GB510302310200) 2024 spills / hours 5 / 1.3 Long-term average 2.3 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	West End Park Burn	2	0.5	down 60%	97%
Cricket Ground Holmside Lane CSO Overflow on sewer network EA ID / permit NWL00347 · EPRBB3496RP Outlet location NZ1906848156 (OS grid reference) · View on Apple Maps WFD catchment Cong Burn from Source to Twizell Burn (GB103024077560) 2024 spills / hours 3 / 1.0 Long-term average 4.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Tributary of Iddeston'S Sike	4	0.5	up 33%	100%
Kelloe SSO Manhole No. 18 Overflow on sewer network EA ID / permit NWL00747 · 243/0991 Outlet location NZ3382037090 (OS grid reference) · View on Apple Maps WFD catchment Croxdale Beck from Source to Wear (GB103024077410) 2024 spills / hours 4 / 1.5 Long-term average 3.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Coxhoe Beck, Tributary of	2	0.5	down 50%	100%
West End CSO Overflow on sewer network Company site name SIMONSIDE CSO EA ID / permit NWL01203 · 226/1124 Outlet location NZ3373775609 (OS grid reference) · View on Apple Maps WFD catchment Seaton Burn from Source to Tidal Limit (GB103022076190) Bathing water Seaton Sluice 2024 spills / hours 9 / 4.6 Long-term average 8.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Seaton Burn	3	0.5	down 67%	97%
South Green Lane CSO Storm discharge at pumping station EA ID / permit NWL01226 · 225/0962 Outlet location NZ2730486575 (OS grid reference) · View on Apple Maps WFD catchment Wansbeck from Bothal Burn to North Sea (GB103022077062) 2024 spills / hours 3 / 8.6 Long-term average 2.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Blackclose Dene	4	0.5	up 33%	100%
Sunderland Road CSO Overflow on sewer network EA ID / permit NWL01327 · 255/1222 Outlet location NZ4391443354 (OS grid reference) · View on Apple Maps WFD catchment Horden Burn (GB650301500002) 2024 spills / hours 21 / 127 Long-term average 14.0 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Horden Burn	5	0.5	down 76%	98%
Briardale CSO Overflow on sewer network EA ID / permit NWL00191 · NPSWQD000519 Outlet location NZ2595282604 (OS grid reference) · View on Apple Maps WFD catchment Sleek Burn / Hepscott Burn Source to Tidal Limit (GB103022076230) 2024 spills / hours 5 / 6.0 Long-term average 4.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Unnamed Trib Sleek Burn	2	0.5	down 60%	94%
Eland Lane (New) Pumping Station Storm discharge at pumping station EA ID / permit NWL00505 · 226/A/0965 Outlet location NZ1663072980 (OS grid reference) · View on Apple Maps WFD catchment Pont from Med Burn to Small Burn (GB103022076860) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Pont	1	0.5	up from 0	93%
Riverside Park West CSO Overflow on sewer network EA ID / permit NWL01115 · 235/1765 Outlet location NZ2782063461 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 9 / 1.5 Long-term average 3.5 spills a year (monitored since 2014) Monitor below 90% Comms failure / issue · Resolved - Jul Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	River Tyne Saline Estuary	5	0.5	down 44%	89%
West Rainton CSO DU085 Overflow on sewer network Company site name WEST RAINTON STW MANHOLE NO21 CSO EA ID / permit NWL01487 · 245/E/0505 Outlet location NZ3011646522 (OS grid reference) · View on Apple Maps WFD catchment Wear from Croxdale Beck to Lumley Park Burn (GB103024077621) 2024 spills / hours 3 / 3.5 Long-term average 4.1 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 0.5 hours spilling →	Wear	3	0.5	no change	99%
Charlton Village 1 SSO Overflow on sewer network EA ID / permit NWL00271 · 25/06/1026 Outlet location NZ6490015850 (OS grid reference) · View on Apple Maps WFD catchment Skelton Beck Catch (Saltburn) trib of North Sea (GB103025071970) 2024 spills / hours 4 / 1.3 Long-term average 2.3 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.5 hours spilling →	Little Beck (Skelton Catchmen)	3	0.5	down 25%	96%
Bennetts Walk CSO Storm discharge at pumping station EA ID / permit NWL00117 · EPRDP3923XT Outlet location NZ2023585840 (OS grid reference) · View on Apple Maps WFD catchment Wansbeck from Font to Bothal Burn (GB103022077061) 2024 spills / hours 20 / 12 Long-term average 12.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	River Wansbeck	4	0.4	down 80%	100%
Dean Road CSO Overflow on sewer network EA ID / permit NWL00424 · EPRBB3495RJ Outlet location NZ2942431801 (OS grid reference) · View on Apple Maps WFD catchment Carrs from Source to Skerne (GB103025072520) 2024 spills / hours 2 / 0.8 Long-term average 5.9 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Tributary of River Skerne	8	0.4	up 300%	100%
Fatfield CSO 3 Overflow on sewer network EA ID / permit NWL00540 · Permit applied for Outlet location NZ3148354141 (OS grid reference) · View on Apple Maps WFD catchment River Wear (GB510302402900) 2024 spills / hours 6 / 11 Long-term average 1.5 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	River Wear	3	0.4	down 50%	100%
Horncliffe North STW Inlet overflow at sewage works Sewage works Horncliffe North EA ID / permit NWL00707 · 210/0887 Outlet location NT9267949961 (OS grid reference) · View on Apple Maps WFD catchment River Tweed (GB510202110000) 2024 spills / hours 218 / 85 Long-term average 67.8 spills a year (monitored since 2014) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	River Tweed	1	0.4	down 100%	100%
Station Lane CSO Overflow on sewer network EA ID / permit NWL01288 · 245/1313 Outlet location NZ2536052630 (OS grid reference) · View on Apple Maps WFD catchment Cong Burn from Twizell Burn to Wear (GB103024077600) 2024 spills / hours 4 / 1.0 Long-term average 5.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Chester Burn, Tributary of	3	0.4	down 25%	94%
Stella Road CSO Overflow on sewer network EA ID / permit NWL01300 · 233/1225 Outlet location NZ1744263972 (OS grid reference) · View on Apple Maps WFD catchment River Tyne (GB510302310200) 2024 spills / hours 7 / 4.3 Long-term average 5.8 spills a year (monitored since 2018) Monitor below 90% Comms failure / issue · Resolved - Jul Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Clvrt Watercrse River Tyne	5	0.4	down 29%	89%
Wall Sewage Treatment Works Inlet overflow at sewage works Sewage works Wall EA ID / permit NWL01446 · 231/A/0454 Outlet location NY9136068550 (OS grid reference) · View on Apple Maps WFD catchment N Tyne from Barrasford to S Tyne confluence (GB103023075802) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2021) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 0.4 hours spilling →	North Tyne	2	0.4	up from 0	100%
Castle Terrace NO2 (BT341) CSO Overflow on sewer network EA ID / permit NWL00253 · NPSWQD000697 Outlet location NT9927653342 (OS grid reference) · View on Apple Maps WFD catchment TWEED (GB510202110000) Bathing water Spittal 2024 spills / hours 0 / 0.0 Long-term average 0.3 spills a year (monitored since 2018) Monitor below 90% Comms failure / issue · Resolved - May Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	River Tweed (Saline Estuary)	2	0.4	up from 0	77%
CSO at Hillierson Terrace Overflow on sewer network EA ID / permit NWL00372 · 232/1022 Outlet location NY7794943799 (OS grid reference) · View on Apple Maps WFD catchment Nent from Source to South Tyne (GB103023075420) 2024 spills / hours 6 / 11 Long-term average 4.1 spills a year (monitored since 2018) Monitor below 90% Installation set-up/design issue · Resolved - Dec Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	River Nent	3	0.4	down 50%	64%
CSO New Drive Recreation Ground Overflow on sewer network EA ID / permit NWL00393 · 255/1154 Outlet location NZ4169950096 (OS grid reference) · View on Apple Maps WFD catchment Ice House Dene to North Sea (GB650301500002) Bathing water Seaham Hall Beach 2024 spills / hours 5 / 2.1 Long-term average 7.0 spills a year (monitored since 2013) Monitor below 90% Comms failure / issue · Resolved - Apr Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Ice House Dean	3	0.4	down 40%	87%
Gillas Lane East CSO (SU32) Overflow on sewer network EA ID / permit NWL00589 · 245/1360 Outlet location NZ3478348813 (OS grid reference) · View on Apple Maps WFD catchment Lumley Park Burn from Source to Herrington Burn (GB103024077580) 2024 spills / hours 1 / 0.3 Long-term average 1.6 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Rough Dene Burn	1	0.4	no change	98%
Yarm Bridge CSO Overflow on sewer network EA ID / permit NWL01561 · 254/1178 Outlet location NZ4180413187 (OS grid reference) · View on Apple Maps WFD catchment Tees from Skerne to Tidal Limit (GB103025072595) 2024 spills / hours 4 / 1.5 Long-term average 4.9 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	River Tees	6	0.4	up 50%	95%
29/30 North Road Combined Sewer Overflow Overflow on sewer network EA ID / permit NWL00006 · EPRZB3794RS Outlet location NZ3543562357 (OS grid reference) · View on Apple Maps WFD catchment Don from Source to Tidal Limit (GB103023075690) 2024 spills / hours 4 / 1.5 Long-term average 2.9 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 0.4 hours spilling →	The River Don	2	0.4	down 50%	93%
Argyle Court CSO Overflow on sewer network EA ID / permit NWL00058 · EPRBP3427GC Outlet location NZ1967554169 (OS grid reference) · View on Apple Maps WFD catchment Team from Source to Tyne (GB103023075670) 2024 spills / hours 1 / 0.3 Long-term average 2.9 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 0.4 hours spilling →	Unnamed Trib Of Houghwell Burn	1	0.4	no change	100%
Hamsterley CSO Overflow on sewer network EA ID / permit NWL00642 · 241/C/0419 Outlet location NZ1209030820 (OS grid reference) · View on Apple Maps WFD catchment Linburn Beck from Source to Wear (GB103024072720) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Linburn Beck, Tributary of	2	0.4	up from 0	96%
Junction Langholme Avenue & Overflow on sewer network EA ID / permit NWL00744 · 235/1590 Outlet location NZ3620661987 (OS grid reference) · View on Apple Maps WFD catchment Don from Source to Tidal Limit (GB103023075690) 2024 spills / hours 7 / 7.0 Long-term average 5.9 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Don	2	0.4	down 71%	99%
Queensway CSO Overflow on sewer network EA ID / permit NWL01075 · 234/1134 Outlet location NZ0910052300 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 1 / 0.5 Long-term average 4.0 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 0.4 hours spilling →	Backstone Burn	5	0.4	up 400%	95%
Tyne Street SPS Storm discharge at pumping station EA ID / permit NWL01415 · 235/1656 Outlet location NZ3305165804 (OS grid reference) · View on Apple Maps WFD catchment River Tyne (GB510302310200) 2024 spills / hours 1 / 0.3 Long-term average 1.1 spills a year (monitored since 2015) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	River Tyne	2	0.4	up 100%	100%
West Rainton CSO DU085 Overflow on sewer network Company site name WEST RAINTON STW CSO (DU081) EA ID / permit NWL01489 · 245/E/0506 Outlet location NZ3011646522 (OS grid reference) · View on Apple Maps WFD catchment Wear from Croxdale Beck to Lumley Park Burn (GB103024077621) 2024 spills / hours 13 / 17 Long-term average 23.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.4 hours spilling →	Wear	3	0.4	down 77%	97%
Cross Street CSO Overflow on sewer network EA ID / permit NWL00355 · 243/0916 Outlet location NZ2654837751 (OS grid reference) · View on Apple Maps WFD catchment Wear from Gaunless to Browney (GB103024077464) 2024 spills / hours 2 / 0.8 Long-term average 2.8 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Wear	3	0.3	up 50%	100%
New York CSO Overflow on sewer network EA ID / permit NWL00939 · 235/1901 Outlet location NZ3499167106 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 1 / 0.3 Long-term average 5.0 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Tyne Estuary	1	0.3	no change	96%
Scottswood Road (C49-104) Nwl name Overflow on sewer network EA ID / permit NWL01153 · Permit applied for Outlet location NZ2207663278 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 2 / 0.5 Long-term average 1.9 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	River Tyne	2	0.3	no change	100%
Wear View B CSO Overflow on sewer network EA ID / permit NWL01470 · 243/0921 Outlet location NZ2208734118 (OS grid reference) · View on Apple Maps WFD catchment Wear from Gaunless to Browney (GB103024077464) 2024 spills / hours 2 / 1.8 Long-term average 1.2 spills a year (monitored since 2017) Investigation Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 0.3 hours spilling →	The Strait, Culverted Watercrs	2	0.3	no change	96%
Broadway Road CSO Overflow on sewer network EA ID / permit NWL00203 · EPRBB3999AQ Outlet location NZ1990465237 (OS grid reference) · View on Apple Maps WFD catchment River Tyne (GB510302310200) 2024 spills / hours 4 / 0.6 Long-term average 3.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Tidal River Tyne	4	0.3	no change	98%
East Farm CSO Overflow on sewer network EA ID / permit NWL00479 · 233/1081 Outlet location NZ1558061680 (OS grid reference) · View on Apple Maps WFD catchment Blaydon Burn (GB103023074791) 2024 spills / hours 10 / 20 Long-term average 8.2 spills a year (monitored since 2014) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 0.3 hours spilling →	Barlow Burn	1	0.3	down 90%	100%
Holywell House (CSO) Overflow on sewer network EA ID / permit NWL00700 · 226/1186 Outlet location NZ3123072640 (OS grid reference) · View on Apple Maps WFD catchment Brierdene Burn from Source to North Sea (GB103022076180) 2024 spills / hours 10 / 58 Long-term average 4.6 spills a year (monitored since 2015) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Brierdene Burn (Coastal Strea)	1	0.3	down 90%	93%
J F Kennedy Estate CSO Overflow on sewer network EA ID / permit NWL00730 · 245/1302 Outlet location NZ3182855951 (OS grid reference) · View on Apple Maps WFD catchment River Wear (GB510302402900) 2024 spills / hours 5 / 1.7 Long-term average 4.7 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Willows Pond	3	0.3	down 40%	100%
Jarrow Hedworth CSO 23 Overflow on sewer network EA ID / permit NWL00735 · EPRAB3291RT Outlet location NZ3543562359 (OS grid reference) · View on Apple Maps WFD catchment Don from Source to Tidal Limit (GB103023075690) 2024 spills / hours 3 / 1.0 Long-term average 2.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 0.3 hours spilling →	River Don	2	0.3	down 33%	100%
Maughan Close CSO SE39 Overflow on sewer network EA ID / permit NWL00858 · 243/1001 Outlet location NZ3084034670 (OS grid reference) · View on Apple Maps WFD catchment Croxdale Beck from Source to Wear (GB103024077410) 2024 spills / hours 5 / 1.5 Long-term average 5.0 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Coxhoe Beck Trib	2	0.3	down 60%	95%
Murton Combined Sewer Overflow Overflow on sewer network EA ID / permit NWL00914 · EPRCB3195RW Outlet location NZ3979646686 (OS grid reference) · View on Apple Maps WFD catchment Dalton Beck to North Sea (GB103025075970) 2024 spills / hours 0 / 0.0 Long-term average 0.9 spills a year (monitored since 2013) Monitor below 90% Comms failure / issue · Resolved - Dec Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.3 hours spilling →	Culverted Trib of Seaham Burn	3	0.3	up from 0	90%

Sewage treatment works

Storm tanks and inlet overflows at each Northumbrian Water sewage works. The figures are 2025 spills.

← All water companies · Contains Environment Agency data licensed under the Open Government Licence v3.0. How to read the data.