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
St Helens Lane CSO Overflow on sewer network EA ID / permit NWL01261 · 233/1090 Outlet location NY9867764397 (OS grid reference) · View on Apple Maps WFD catchment Tyne from Watersmeet to Tidal Limit (GB103023075801) 2024 spills / hours 18 / 16 Long-term average 18.9 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.5 hours spilling →	River Tyne	12	1.5	down 33%	92%
Warsdell Street Pumping Station Storm discharge at pumping station EA ID / permit NWL01459 · 226/1154 Outlet location NZ3116082360 (OS grid reference) · View on Apple Maps WFD catchment BLYTH (N) (GB510302203200) 2024 spills / hours 12 / 32 Long-term average 7.6 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.5 hours spilling →	Blyth Saline Estuary	1	1.5	down 92%	99%
CSO at Stoneygate Lane Overflow on sewer network EA ID / permit NWL00379 · 235/1202 Outlet location NZ2868262713 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 16 / 5.8 Long-term average 9.7 spills a year (monitored since 2013) Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 1.5 hours spilling →	Tyne Estuary	8	1.5	down 50%	95%
Denton Dene North of West Road CSO Overflow on sewer network EA ID / permit NWL00438 · 235/1869 Outlet location NZ1965463974 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 17 / 7.7 Long-term average 15.1 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.5 hours spilling →	River Tyne (Saline Estuary)	7	1.5	down 59%	100%
CSO 32 Walbottle Road Overflow on sewer network EA ID / permit NWL00362 · 235/1876 Outlet location NZ1693265809 (OS grid reference) · View on Apple Maps WFD catchment New Burn (Trib of Tyne) (GB103023075740) 2024 spills / hours 8 / 2.6 Long-term average 6.1 spills a year (monitored since 2015) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.4 hours spilling →	New Burn	3	1.4	down 63%	100%
Hobdale House CSO Overflow on sewer network EA ID / permit NWL00693 · 256/1074 Outlet location NZ6610017601 (OS grid reference) · View on Apple Maps WFD catchment Saltburn Gill Catch trib of North Sea (GB103025071960) 2024 spills / hours 14 / 12 Long-term average 11.3 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.4 hours spilling →	Boos Beck-Trib of Saltburn Bk	6	1.4	down 57%	98%
Riding Dene CSO Overflow on sewer network EA ID / permit NWL01108 · 233/G/0178 Outlet location NZ0732562359 (OS grid reference) · View on Apple Maps WFD catchment Tyne from Watersmeet to Tidal Limit (GB103023075801) 2024 spills / hours 24 / 33 Long-term average 16.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.4 hours spilling →	Tributary of Tyne	7	1.4	down 71%	94%
Coxhoe CSO Overflow on sewer network EA ID / permit NWL00339 · 243/0986 Outlet location NZ3170034920 (OS grid reference) · View on Apple Maps WFD catchment Croxdale Beck from Source to Wear (GB103024077410) 2024 spills / hours 7 / 2.3 Long-term average 5.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.4 hours spilling →	Coxhoe Beck	10	1.4	up 43%	97%
Hilton SPS Storm discharge at pumping station EA ID / permit NWL00692 · 254/1963 Outlet location NZ4700410852 (OS grid reference) · View on Apple Maps WFD catchment Leven from Tame to River Tees (GB103025071880) 2024 spills / hours 3 / 0.9 Long-term average 4.7 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.4 hours spilling →	Brewsdale Beck	2	1.4	down 33%	100%
Goatsbeck Terrace CSO Overflow on sewer network EA ID / permit NWL00596 · 244/0947 Outlet location NZ2490140081 (OS grid reference) · View on Apple Maps WFD catchment Browney from Deerness confl to Wear (GB103024077552) 2024 spills / hours 2 / 0.5 Long-term average 3.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.3 hours spilling →	Goats Beck (River Browney)	5	1.3	up 150%	98%
Prudhoe CSO 4 Overflow on sewer network EA ID / permit NWL01063 · 233/G/0117 Outlet location NZ0848962625 (OS grid reference) · View on Apple Maps WFD catchment Tyne from Watersmeet to Tidal Limit (GB103023075801) 2024 spills / hours 14 / 8.6 Long-term average 14.7 spills a year (monitored since 2013) Monitor below 90% Comms failure / issue · Resolved - Feb Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.3 hours spilling →	Otter Burn	8	1.3	down 43%	87%
Tanners Road CSO TD028 Overflow on sewer network EA ID / permit NWL01342 · 233/1238 Outlet location NY9331264296 (OS grid reference) · View on Apple Maps WFD catchment Tyne from Watersmeet to Tidal Limit (GB103023075801) 2024 spills / hours 7 / 1.6 Long-term average 6.0 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.3 hours spilling →	Cockshaw Burn	8	1.3	up 14%	96%
Boathouse Lane No 2 SPS Storm discharge at pumping station EA ID / permit NWL00166 · 254/1366 Outlet location NZ4467918059 (OS grid reference) · View on Apple Maps WFD catchment Tees from Skerne to Tidal Limit (GB103025072595) 2024 spills / hours 13 / 1.1 Long-term average 20.3 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.3 hours spilling →	Tees Estuary	9	1.3	down 31%	100%
Lansbury Drive CSO Overflow on sewer network EA ID / permit NWL00779 · 235/1885 Outlet location NZ2612056580 (OS grid reference) · View on Apple Maps WFD catchment Team from Source to Tyne (GB103023075670) 2024 spills / hours 26 / 56 Long-term average 19.3 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.3 hours spilling →	River Team	2	1.3	down 92%	100%
Gladstone Street (G1) Overflow on sewer network EA ID / permit NWL00591 · 253/A/0942 Outlet location NZ2910015000 (OS grid reference) · View on Apple Maps WFD catchment Skerne from Demons Beck to Tees (GB103025072596) 2024 spills / hours 4 / 1.3 Long-term average 8.8 spills a year (monitored since 2015) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 1.3 hours spilling →	Skerne	5	1.3	up 25%	100%
Bevan House Overflow on sewer network EA ID / permit NWL00126 · 226/1059 Outlet location NZ3207980783 (OS grid reference) · View on Apple Maps WFD catchment BLYTH (N) (GB510302203200) Bathing water Blyth South Beach 2024 spills / hours 11 / 75 Long-term average 4.2 spills a year (monitored since 2013) Investigation Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 1.3 hours spilling →	Blyth Estuary	1	1.3	down 91%	99%
Oliver Street CSO Overflow on sewer network EA ID / permit NWL00982 · 245/1265 Outlet location NZ1906251851 (OS grid reference) · View on Apple Maps WFD catchment Twizell Burn from Source to Cong Burn (GB103024077590) 2024 spills / hours 7 / 3.0 Long-term average 4.5 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.3 hours spilling →	Trip of Stanley Burn	7	1.3	no change	100%
Seaham Urban District Council SSO Overflow on sewer network EA ID / permit NWL01168 · 255/E/0645 Outlet location NZ4100050400 (OS grid reference) · View on Apple Maps WFD catchment Seaton Burn to North Sea (GB650301500002) 2024 spills / hours 5 / 3.5 Long-term average 6.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.3 hours spilling →	Seaton Burn	10	1.3	up 100%	100%
Sheraton CSO 50M Sw of STW Overflow on sewer network EA ID / permit NWL01182 · 255/1132 Outlet location NZ4416034790 (OS grid reference) · View on Apple Maps WFD catchment Crimdon Beck from Source to Sea (GB103025075910) 2024 spills / hours 4 / 7.5 Long-term average 5.7 spills a year (monitored since 2014) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.3 hours spilling →	Bellows Burn	2	1.3	down 50%	97%
Yarm Road CSO (Y3) Overflow on sewer network EA ID / permit NWL01564 · EPRMB3892RF Outlet location NZ2912514232 (OS grid reference) · View on Apple Maps WFD catchment Skerne from Demons Beck to Tees (GB103025072596) 2024 spills / hours 19 / 16 Long-term average 20.7 spills a year (monitored since 2013) Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 1.3 hours spilling →	River Skerne	3	1.3	down 84%	99%
Gunnerton STW Inlet overflow at sewage works Sewage works Gunnerton EA ID / permit NWL00633 · 231/1078 Outlet location NY9042074970 (OS grid reference) · View on Apple Maps WFD catchment Gunnerton Burn from Source to N Tyne (GB103023074880) 2024 spills / hours 3 / 4.5 Long-term average 5.0 spills a year (monitored since 2021) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.2 hours spilling →	Gunnerton Burn	9	1.2	up 200%	95%
Railway Station Stocksfield CSO Overflow on sewer network EA ID / permit NWL01080 · 233/D/0068 Outlet location NZ0547961386 (OS grid reference) · View on Apple Maps WFD catchment Stocksfield Burn Catchment (trib of Tyne) (GB103023075640) 2024 spills / hours 19 / 38 Long-term average 15.0 spills a year (monitored since 2013) Monitor below 90% Sensor failure / issue · Resolved - Jun Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 1.2 hours spilling →	Stocksfield Burn (River Tyne)	5	1.2	down 74%	74%
Houghwell House CSO Overflow on sewer network EA ID / permit NWL01227 · 235/1711 Outlet location NZ1908153958 (OS grid reference) · View on Apple Maps WFD catchment Team from Source to Tyne (GB103023075670) 2024 spills / hours 4 / 3.0 Long-term average 16.0 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 1.2 hours spilling →	Houghwell Burn	3	1.2	down 25%	100%
Union Quay CSO Overflow on sewer network EA ID / permit NWL01422 · EPRBB3497EZ Outlet location NZ3614468363 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) Bathing water Littlehaven Beach 2024 spills / hours 14 / 27 Long-term average 6.1 spills a year (monitored since 2018) Monitor below 90% Sensor failure / issue · Resolved - Aug Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 1.2 hours spilling →	River Tyne (Tidal)	2	1.2	down 86%	90%
Bensham Hospital CSO Overflow on sewer network EA ID / permit NWL00119 · 235/2009 Outlet location NZ2433260965 (OS grid reference) · View on Apple Maps WFD catchment Team from Source to Tyne (GB103023075670) 2024 spills / hours 8 / 1.5 Long-term average 7.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.2 hours spilling →	Team, River	6	1.2	down 25%	97%
Kings Arms Lane CSO Overflow on sewer network EA ID / permit NWL00759 · 232/1152 Outlet location NY7174546573 (OS grid reference) · View on Apple Maps WFD catchment South Tyne from Black Burn to Tipalt Burn (GB103023075531) 2024 spills / hours 1 / 0.5 Long-term average 1.5 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.2 hours spilling →	Trib River Nent	7	1.2	up 600%	100%
Main Street CSO Overflow on sewer network EA ID / permit NWL00839 · 232/1012 Outlet location NY7092064110 (OS grid reference) · View on Apple Maps WFD catchment Coquet from Forest Burn to Tidal Limit (GB103022076693) 2024 spills / hours 1 / 0.3 Long-term average 2.1 spills a year (monitored since 2015) Monitor below 90% Comms failure / issue · Resolved - Apr Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.2 hours spilling →	Hemmel Burn	6	1.2	up 500%	73%
Millfield CSO Overflow on sewer network EA ID / permit NWL00892 · 226/1105 Outlet location NZ2627581226 (OS grid reference) · View on Apple Maps WFD catchment Blyth from Pont to Tidal Limit (GB103022077052) 2024 spills / hours 15 / 18 Long-term average 11.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 1.2 hours spilling →	Blyth, Tributary of	3	1.2	down 80%	99%
Fallsway CSO (DU57) Overflow on sewer network EA ID / permit NWL00536 · 245/1160 Outlet location NZ3076044630 (OS grid reference) · View on Apple Maps WFD catchment Wear from Croxdale Beck to Lumley Park Burn (GB103024077621) 2024 spills / hours 0 / 0.0 Long-term average 1.6 spills a year (monitored since 2014) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.1 hours spilling →	Wear Trib	3	1.1	up from 0	99%
High Pittington STW CSO Overflow on sewer network EA ID / permit NWL00683 · 245/E/0065 Outlet location NZ3328043830 (OS grid reference) · View on Apple Maps WFD catchment Pittington Beck from Coalford to Old Durham Beck (GB103024077540) 2024 spills / hours 4 / 1.0 Long-term average 3.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.1 hours spilling →	Coalford Beck	4	1.1	no change	98%
Neasham Road (Y4) CSO Overflow on sewer network EA ID / permit NWL00919 · EPRJB3293DK Outlet location NZ2912514232 (OS grid reference) · View on Apple Maps WFD catchment Skerne from Demons Beck to Tees (GB103025072596) 2024 spills / hours 1 / 0.3 Long-term average 3.4 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 1.1 hours spilling →	River Skerne	3	1.1	up 200%	100%
Oakenshaw CSO Overflow on sewer network EA ID / permit NWL00971 · 243/1005 Outlet location NZ2026636956 (OS grid reference) · View on Apple Maps WFD catchment Wear from Gaunless to Browney (GB103024077464) 2024 spills / hours 1 / 0.3 Long-term average 4.0 spills a year (monitored since 2014) Investigation Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 1.1 hours spilling →	Park House Gill	4	1.1	up 300%	100%
Staindrop SSO Overflow on sewer network EA ID / permit NWL01272 · 25/02/1100 Outlet location NZ1331020620 (OS grid reference) · View on Apple Maps WFD catchment Langley Beck from Source to Sudburn Beck (GB103025072310) 2024 spills / hours 6 / 3.0 Long-term average 3.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 1.1 hours spilling →	Langley Beck	7	1.1	up 17%	100%
Newfield Farm CSO Overflow on sewer network EA ID / permit NWL00948 · EPRCB3191WN Outlet location NZ2038133892 (OS grid reference) · View on Apple Maps WFD catchment Wear from Gaunless to Browney (GB103024077464) 2024 spills / hours 5 / 2.3 Long-term average 3.0 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.1 hours spilling →	Seasonally Dry Ditch to R.Wear	8	1.1	up 60%	97%
Dellwood Pumped Storage Tank CSO Overflow on sewer network EA ID / permit NWL00427 · 242/1042 Outlet location NZ2142429782 (OS grid reference) · View on Apple Maps WFD catchment Gaunless from Hummer Beck to Wear (GB103024072730) 2024 spills / hours 103 / 1,674 Long-term average 103.6 spills a year (monitored since 2016) Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.1 hours spilling →	River Gaunless	4	1.1	down 96%	93%
Elmwood Gardens Overflow on sewer network EA ID / permit NWL00510 · 235/1568 Outlet location NZ2409959833 (OS grid reference) · View on Apple Maps WFD catchment Team from Source to Tyne (GB103023075670) 2024 spills / hours 69 / 116 Long-term average 51.9 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.1 hours spilling →	Black Burn	9	1.1	down 87%	100%
South Park East CSO Overflow on sewer network EA ID / permit NWL01234 · 253/1280 Outlet location NZ2884813759 (OS grid reference) · View on Apple Maps WFD catchment Skerne from Demons Beck to Tees (GB103025072596) 2024 spills / hours 2 / 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 1.1 hours spilling →	Skerne	3	1.1	up 50%	100%
High Pittington CSOs, MHs 27,28&29 Overflow on sewer network Company site name CHURCH VALE CSO EA ID / permit NWL00682 · 245/1385 Outlet location NZ3320043800 (OS grid reference) · View on Apple Maps WFD catchment Pittington Beck from Coalford to Old Durham Beck (GB103024077540) 2024 spills / hours 2 / 0.8 Long-term average 2.0 spills a year (monitored since 2015) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Coalford Beck	4	1.0	up 100%	96%
Vinovium SSO No A13 Overflow on sewer network EA ID / permit NWL01434 · 242/C/0371 Outlet location NZ2150029900 (OS grid reference) · View on Apple Maps WFD catchment Gaunless from Hummer Beck to Wear (GB103024072730) 2024 spills / hours 4 / 1.0 Long-term average 11.4 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Gaunless	3	1.0	down 25%	97%
Barclays A CSO Elvet Overflow on sewer network EA ID / permit NWL00079 · 245/0447 Outlet location NZ2760642176 (OS grid reference) · View on Apple Maps WFD catchment Wear from Croxdale Beck to Lumley Park Burn (GB103024077621) 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 1.0 hours spilling →	Wear	6	1.0	up from 0	100%
Broom Park Old Works CSO Overflow on sewer network EA ID / permit NWL00205 · 244/0936 Outlet location NZ2495541484 (OS grid reference) · View on Apple Maps WFD catchment Deerness from Hedleyhope Burn to Browney (GB103024077280) 2024 spills / hours 0 / 0.0 Long-term average 4.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 1.0 hours spilling →	Relley Gill	7	1.0	up from 0	98%
Rear St Michaels CSO Overflow on sewer network EA ID / permit NWL01095 · 245/1316 Outlet location NZ3296449620 (OS grid reference) · View on Apple Maps WFD catchment Lumley Park Burn from Source to Herrington Burn (GB103024077580) 2024 spills / hours 6 / 7.8 Long-term average 5.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Red Burn	3	1.0	down 50%	100%
Ridley Street SPS Storm discharge at pumping station EA ID / permit NWL01111 · 226/1175 Outlet location NZ3200381552 (OS grid reference) · View on Apple Maps WFD catchment River Blyth Estury (GB510302203200) 2024 spills / hours 7 / 19 Long-term average 2.5 spills a year (monitored since 2020) Investigation Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 1.0 hours spilling →	River Blyth	1	1.0	down 86%	100%
The Oval SPS Storm discharge at pumping station EA ID / permit NWL01372 · 235/1764 Outlet location NZ2787963428 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 12 / 6.1 Long-term average 5.3 spills a year (monitored since 2014) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	River Tyne Saline Estuary	7	1.0	down 42%	100%
Lynesack and Softley CSO (Te 011) Overflow on sewer network EA ID / permit NWL00830 · 242/1065 Outlet location NZ1111625534 (OS grid reference) · View on Apple Maps WFD catchment Gaunless from Source to Hummer Beck (GB103024072690) 2024 spills / hours 2 / 2.0 Long-term average 2.7 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.0 hours spilling →	Crow Howle Beck	2	1.0	no change	93%
Briardene Overflow on sewer network EA ID / permit NWL00194 · 234/A/1025 Outlet location NZ1700059500 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 9 / 7.0 Long-term average 6.2 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.9 hours spilling →	Derwent, Tributary of	4	0.9	down 56%	99%
CSO at Church Dene Overflow on sewer network EA ID / permit NWL00367 · 233/1004 Outlet location NZ1503665089 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 13 / 9.8 Long-term average 7.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 0.9 hours spilling →	River Tyne Estuary	5	0.9	down 62%	92%
Damside and Staithes Lane CSO Overflow on sewer network EA ID / permit NWL00416 · 225/1072 Outlet location NZ2012086080 (OS grid reference) · View on Apple Maps WFD catchment Wansbeck from Font to Bothal Burn (GB103022077061) 2024 spills / hours 7 / 29 Long-term average 27.6 spills a year (monitored since 2013) Monitor below 90% Telemetry or data archiving failure / issue · Resolved - Nov Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 0.9 hours spilling →	The Cotting Burn	2	0.9	down 71%	89%
Palace Street North CSO 1 Overflow on sewer network EA ID / permit NWL01000 · 210/1361 Outlet location NT9993852464 (OS grid reference) · View on Apple Maps WFD catchment TWEED (GB510202110000) Bathing water Spittal 2024 spills / hours 23 / 9.1 Long-term average 20.4 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 0.9 hours spilling →	River Tweed (Saline Estuary)	3	0.9	down 87%	96%
Whickham South & Sunniside CSO Overflow on sewer network EA ID / permit NWL01510 · 235/1966 Outlet location NZ2101059990 (OS grid reference) · View on Apple Maps WFD catchment Team from Source to Tyne (GB103023075670) 2024 spills / hours 8 / 3.0 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 0.9 hours spilling →	Trib Black Burn via Sw Sewer	5	0.9	down 38%	100%

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.