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
Barton Sewage Treatment Works Inlet overflow at sewage works Sewage works Barton EA ID / permit NWL00091 · 25/02/1080 Outlet location NZ2314309135 (OS grid reference) · View on Apple Maps WFD catchment Barton Beck from Source to Clow Beck (GB103025072040) 2024 spills / hours 7 / 15 Long-term average 7.8 spills a year (monitored since 2022) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	Barton Beck	6	14	down 14%	99%
Harbour SPS Storm discharge at pumping station EA ID / permit NWL00646 · 221/0914 Outlet location NU2195932254 (OS grid reference) · View on Apple Maps WFD catchment Northumberland North (GB650301440000) Bathing water Seahouses North 2024 spills / hours 5 / 12 Long-term average 9.9 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	The North Sea	12	14	up 140%	92%
Milfield CSO Overflow on sewer network EA ID / permit NWL00880 · EPRZB3891ET Outlet location NT9380734319 (OS grid reference) · View on Apple Maps WFD catchment Till from Glen to River Tweed (GB102021073050) 2024 spills / hours 1 / 0.3 Long-term average 21.9 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	Unnamed Trib River Till	22	14	up 2100%	91%
Church Street CSO Overflow on sewer network EA ID / permit NWL00289 · 210/1320 Outlet location NT9941328257 (OS grid reference) · View on Apple Maps WFD catchment Wooler Water from Harthope Burn to Till (GB102021072930) 2024 spills / hours 24 / 23 Long-term average 25.5 spills a year (monitored since 2014) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 14 hours spilling →	Wooler Water	24	14	no change	100%
CSO at Shildon Overflow on sewer network EA ID / permit NWL00378 · 25/03/1216 Outlet location NZ2452025230 (OS grid reference) · View on Apple Maps WFD catchment Woodham Burn from Source to Rushyford beck (GB103025072400) 2024 spills / hours 10 / 14 Long-term average 10.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	Trib of Woodham Burn	9	14	down 10%	100%
Hexham (the Larches) P.S. Storm discharge at pumping station EA ID / permit NWL01366 · 233/1042 Outlet location NY9283163828 (OS grid reference) · View on Apple Maps WFD catchment Tyne from Watersmeet to Tidal Limit (GB103023075801) 2024 spills / hours 27 / 37 Long-term average 22.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	Cockshaw Burn	10	14	down 63%	100%
Church Street NO26 CSO Overflow on sewer network EA ID / permit NWL00291 · NPSWQD008982 Outlet location NZ3304649836 (OS grid reference) · View on Apple Maps WFD catchment Lumley Park Burn from Source to Herrington Burn (GB103024077580) 2024 spills / hours 23 / 35 Long-term average 26.2 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	Moors Burn	16	14	down 30%	100%
Gribdale Terrace STW Inlet overflow at sewage works Sewage works Gribdale Terrace EA ID / permit NWL00626 · 256/1062 Outlet location NZ5844411062 (OS grid reference) · View on Apple Maps WFD catchment Leven from Source to Tame (GB103025071890) 2024 spills / hours 11 / 53 Long-term average 10.6 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	Trib of River Leven	14	14	up 27%	98%
Woodlands No 3 SPS Storm discharge at pumping station EA ID / permit NWL01549 · 223/B/0223 Outlet location NU2490705679 (OS grid reference) · View on Apple Maps WFD catchment COQUET (GB510302203000) Bathing water Warkworth; Amble Links 2024 spills / hours 7 / 17 Long-term average 3.0 spills a year (monitored since 2016) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	River Coquet	3	14	down 57%	95%
Hetton-Le-Hole SSO No. 3 Overflow on sewer network EA ID / permit NWL00672 · 245/1362 Outlet location NZ3494048180 (OS grid reference) · View on Apple Maps WFD catchment Lumley Park Burn from Source to Herrington Burn (GB103024077580) 2024 spills / hours 10 / 21 Long-term average 12.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	Hetton Burn	11	14	up 10%	96%
Ulswater Crescent CSO Overflow on sewer network EA ID / permit NWL01421 · 241/1130 Outlet location NZ1663435102 (OS grid reference) · View on Apple Maps WFD catchment Beechburn Beck (Trib of Wear) (GB103024077390) 2024 spills / hours 16 / 29 Long-term average 27.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 14 hours spilling →	Crook Beck	14	14	down 13%	99%
CSO at Warkworth Crescent Overflow on sewer network EA ID / permit NWL00383 · 255/1157 Outlet location NZ4042349383 (OS grid reference) · View on Apple Maps WFD catchment Seaton Burn from Source to Tidal Limit (GB650301500002) 2024 spills / hours 12 / 24 Long-term average 15.0 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	Scawpie Dean	10	14	down 17%	100%
Shincliffe (A177) CSO Overflow on sewer network EA ID / permit NWL01194 · 245/1285 Outlet location NZ2876741031 (OS grid reference) · View on Apple Maps WFD catchment Wear from Croxdale Beck to Lumley Park Burn (GB103024077621) 2024 spills / hours 7 / 7.8 Long-term average 12.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 14 hours spilling →	River Wear	13	14	up 86%	100%
Melkridge STW Inlet overflow at sewage works Sewage works Melkridge EA ID / permit NWL00866 · 232/1156 Outlet location NY7435063780 (OS grid reference) · View on Apple Maps WFD catchment South Tyne from Tipalt Burn to Allen (GB103023075532) 2024 spills / hours 82 / 53 Long-term average 55.7 spills a year (monitored since 2020) Monitor below 90% Sensor failure / issue · Resolved - Oct Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 13 hours spilling →	River South Tyne	27	13	down 67%	69%
West of Hedworth Lane CSO Overflow on sewer network EA ID / permit NWL01485 · 235/C/0044 Outlet location NZ3345763236 (OS grid reference) · View on Apple Maps WFD catchment Don from Source to Tidal Limit (GB103023075690) 2024 spills / hours 35 / 27 Long-term average 27.7 spills a year (monitored since 2014) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 13 hours spilling →	Don	33	13	down 6%	94%
Brinkburn Crescent CSO (SU28) Overflow on sewer network EA ID / permit NWL00199 · 245/1358 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 / 2.8 Long-term average 6.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 13 hours spilling →	Moors Burn, Trib Lumley Park	14	13	up 250%	100%
Park Lane CSO Overflow on sewer network EA ID / permit NWL01009 · 256/1080 Outlet location NZ6041515706 (OS grid reference) · View on Apple Maps WFD catchment Skelton Beck Catch (Saltburn) trib of North Sea (GB103025071970) 2024 spills / hours 21 / 32 Long-term average 17.0 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 13 hours spilling →	Chapel Beck	13	13	down 38%	100%
Priestley Crescent CSO Overflow on sewer network EA ID / permit NWL01057 · 245/1386 Outlet location NZ3899757745 (OS grid reference) · View on Apple Maps WFD catchment WEAR (GB510302402900) 2024 spills / hours 28 / 27 Long-term average 31.8 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 13 hours spilling →	Wear Estuary	15	13	down 46%	100%
CSO Neptune Yard No.1 Outfall Overflow on sewer network EA ID / permit NWL00392 · 235/1623 Outlet location NZ2997665306 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 23 / 23 Long-term average 15.8 spills a year (monitored since 2018) Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 13 hours spilling →	Tyne Estuary	12	13	down 48%	100%
Station Bank (DU21) Overflow on sewer network EA ID / permit NWL01285 · 245/1296 Outlet location NZ3107042270 (OS grid reference) · View on Apple Maps WFD catchment Pittington Beck from Coalford to Old Durham Beck (GB103024077540) 2024 spills / hours 11 / 8.0 Long-term average 18.5 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 13 hours spilling →	Pittington Beck	20	13	up 82%	100%
Hustledown Road CSO Overflow on sewer network EA ID / permit NWL00722 · 245/1257 Outlet location NZ1949851638 (OS grid reference) · View on Apple Maps WFD catchment Twizell Burn from Source to Cong Burn (GB103024077590) 2024 spills / hours 20 / 27 Long-term average 20.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	Stanley Burn	17	12	down 15%	99%
Skippers Lane Industrial Estate PS Overflow on sewer network EA ID / permit NWL01208 · 254/1849 Outlet location NZ5262020100 (OS grid reference) · View on Apple Maps WFD catchment Spencer Beck to River Tees (GB510302509900) 2024 spills / hours 6 / 16 Long-term average 5.5 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	Spencer Beck	5	12	down 17%	96%
Chester Le Street STW Inlet overflow at sewage works Sewage works Chester Le Street EA ID / permit NWL00275 · 245/1242 Outlet location NZ2805051740 (OS grid reference) · View on Apple Maps WFD catchment Wear DS of Lumley Park Burn to Tidal Limit (GB103024077624) 2024 spills / hours 0 / 0.0 Long-term average 4.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	Wear	8	12	up from 0	99%
Washington CSO Don Gardens - Nwl name Overflow on sewer network EA ID / permit NWL01460 · EPR/ZB3798WE Outlet location NZ3102858090(toaculvertedwatercoursewhichopenatNZ3115258339) (OS grid reference) · View on Apple Maps WFD catchment Don from Source to Tidal Limit (GB103023075690) 2024 spills / hours 13 / 33 Long-term average 12.9 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	Culverted tributary of the River Don	6	12	down 54%	97%
Blankney Close CSO Overflow on sewer network EA ID / permit NWL00154 · 256/1045 Outlet location NZ6114915290 (OS grid reference) · View on Apple Maps WFD catchment Skelton Beck Catch (Saltburn) trib of North Sea (GB103025071970) 2024 spills / hours 10 / 48 Long-term average 3.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	Tributary of Chapel Beck	4	12	down 60%	99%
Veronica Street CSO Overflow on sewer network EA ID / permit NWL01426 · 254/1205 Outlet location NZ5068319719 (OS grid reference) · View on Apple Maps WFD catchment Marton West Beck Catchment (trib of Tidal Tees) (GB103025072210) 2024 spills / hours 1 / 1.5 Long-term average 16.8 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	Ormesby Beck	4	12	up 300%	98%
Oakley Green Combined Sewer Overflow Overflow on sewer network EA ID / permit NWL00973 · EPRTP3225PG Outlet location NZ1868726495 (OS grid reference) · View on Apple Maps WFD catchment Gaunless from Source to Hummer Beck (GB103024072690) 2024 spills / hours 23 / 31 Long-term average 15.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 12 hours spilling →	The River Gaunless via a surface water sewer	18	12	down 22%	99%
Lumley Sewage Pumping Station Storm discharge at pumping station EA ID / permit NWL00824 · 245/1055 Outlet location NZ2843550888 (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 4.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	Wear	2	12	up from 0	100%
Grange Bank CSO Overflow on sewer network EA ID / permit NWL00600 · 241/1141 Outlet location NZ1731031590 (OS grid reference) · View on Apple Maps WFD catchment Beechburn Beck (Trib of Wear) (GB103024077390) 2024 spills / hours 5 / 23 Long-term average 13.8 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	Beechburn Beck	12	12	up 140%	99%
Blackett Street CSO Overflow on sewer network EA ID / permit NWL00145 · 235/1744 Outlet location NZ3203065850 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 14 / 22 Long-term average 10.3 spills a year (monitored since 2013) Monitor below 90% Installation set-up/design issue · Resolved - Oct Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	River Tyne Saline Estuary	10	12	down 29%	90%
Billingham STW Inlet overflow at sewage works Sewage works Billingham EA ID / permit NWL00129 · 254/1965 Outlet location NZ4846025840 (OS grid reference) · View on Apple Maps WFD catchment Tees (GB510302509900) 2024 spills / hours 44 / 167 Long-term average 42.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	North Sea	6	12	down 86%	98%
Strait Lane CSO Overflow on sewer network EA ID / permit NWL01319 · 254/1806 Outlet location NZ3100010000 (OS grid reference) · View on Apple Maps WFD catchment Tees from Skerne to Tidal Limit (GB103025072595) 2024 spills / hours 12 / 23 Long-term average 12.3 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 12 hours spilling →	Tees	10	12	down 17%	94%
Durham Skill Centre CSO DU008 Overflow on sewer network EA ID / permit NWL00470 · 244/1017 Outlet location NZ2540239889 (OS grid reference) · View on Apple Maps WFD catchment Browney from Deerness confl to Wear (GB103024077552) 2024 spills / hours 11 / 13 Long-term average 15.2 spills a year (monitored since 2013) Monitor below 90% Comms failure / issue · Resolved - May Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	Goat'S Beck Trib River Browney	13	12	up 18%	83%
West Woodburn SPS Storm discharge at pumping station EA ID / permit NWL01498 · 231/0966 Outlet location NY8925886777 (OS grid reference) · View on Apple Maps WFD catchment Rede from Bellshiel Burn to N Tyne (GB103023075320) 2024 spills / hours 7 / 42 Long-term average 6.5 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 12 hours spilling →	River Rede	3	12	down 57%	100%
Richard Street Pumping Station Storm discharge at pumping station EA ID / permit NWL01107 · 256/1075 Outlet location NZ6744918735 (OS grid reference) · View on Apple Maps WFD catchment Skelton Beck Catch (Saltburn) trib of North Sea (GB103025071970) 2024 spills / hours 6 / 2.0 Long-term average 4.4 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 11 hours spilling →	Holme Beck	11	11	up 83%	99%
Tanton Road CSO Overflow on sewer network EA ID / permit NWL01343 · 25/04/1629 Outlet location NZ5267009610 (OS grid reference) · View on Apple Maps WFD catchment Tame from Source to Leven (GB103025071910) 2024 spills / hours 1 / 11 Long-term average 0.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 11 hours spilling →	Meadowfield Stell	2	11	up 100%	100%
Manor Road CSO Overflow on sewer network EA ID / permit NWL00848 · 235/1952 Outlet location NZ3102057947 (OS grid reference) · View on Apple Maps WFD catchment Don from Source to Tidal Limit (GB103023075690) 2024 spills / hours 18 / 38 Long-term average 22.8 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 11 hours spilling →	Don	10	11	down 44%	99%
Howdon Road CSO (Nty 040) Overflow on sewer network EA ID / permit NWL00710 · 235/1899 Outlet location NZ3548567147 (OS grid reference) · View on Apple Maps WFD catchment River Tyne (GB510302310200) 2024 spills / hours 9 / 28 Long-term average 11.1 spills a year (monitored since 2019) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 11 hours spilling →	River Tyne	7	11	down 22%	99%
Long Bridge CSO Overflow on sewer network EA ID / permit NWL00805 · QC.25/02/1070 Outlet location NZ2314309135 (OS grid reference) · View on Apple Maps WFD catchment Barton Beck from Source to Clow Beck (GB103025072040) 2024 spills / hours 11 / 31 Long-term average 9.1 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 11 hours spilling →	Barton Beck	5	11	down 55%	100%
Newburn Haugh/Riversdale Way P Stn Storm discharge at pumping station EA ID / permit NWL00944 · 235/1731 Outlet location NZ1845963698 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 10 / 37 Long-term average 9.5 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 11 hours spilling →	River Tyne Saline Estuary	5	11	down 50%	93%
Don Valley Pumping Station Storm discharge at pumping station EA ID / permit NWL00452 · 235/B/0171 Outlet location NZ3355864930 (OS grid reference) · View on Apple Maps WFD catchment River Don to River Tyne (GB510302310200) 2024 spills / hours 23 / 123 Long-term average 27.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 11 hours spilling →	Don	7	11	down 70%	100%
Blue Bell Inn CSO Overflow on sewer network EA ID / permit NWL00160 · 235/1973 Outlet location NZ2632065410 (OS grid reference) · View on Apple Maps WFD catchment Ouse Burn from Source to Tyne (GB103023075780) 2024 spills / hours 14 / 29 Long-term average 10.6 spills a year (monitored since 2014) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 11 hours spilling →	Ouse Burn	9	11	down 36%	94%
Blackhills Farm CSO Overflow on sewer network EA ID / permit NWL00148 · 255/1151 Outlet location NZ4465641299 (OS grid reference) · View on Apple Maps WFD catchment Blackhills Gill (GB650301500002) 2024 spills / hours 10 / 6.9 Long-term average 7.8 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 11 hours spilling →	Blackhills Gill	6	11	down 40%	99%
Duke Street CSO Overflow on sewer network EA ID / permit NWL00459 · 235/1714 Outlet location NZ1687452291 (OS grid reference) · View on Apple Maps WFD catchment Team from Source to Tyne (GB103023075670) 2024 spills / hours 15 / 21 Long-term average 18.0 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 11 hours spilling →	Trib Kyo Burn	20	11	up 33%	99%
West Coatham Lane CSO Overflow on sewer network EA ID / permit NWL01480 · 254/1914 Outlet location NZ5797023810 (OS grid reference) · View on Apple Maps WFD catchment Tees Estuary (S Bank) (GB103025072320) 2024 spills / hours 9 / 23 Long-term average 5.6 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 11 hours spilling →	Trib of the Fleet	3	11	down 67%	100%
Berry Edge Road CSO DER096 Overflow on sewer network EA ID / permit NWL00122 · 234/1137 Outlet location NZ0907549831 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 20 / 18 Long-term average 15.8 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 11 hours spilling →	Unnamed Trib of Dene Burn	21	11	up 5%	100%
CSO Welbeck Road & Bath Street Overflow on sewer network EA ID / permit NWL00405 · 235/1331 Outlet location NZ2984664771 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 29 / 24 Long-term average 51.4 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 11 hours spilling →	Tyne Estuary	23	11	down 21%	95%
Hopgarth Gardens CSO Overflow on sewer network EA ID / permit NWL00702 · 245/1268 Outlet location NZ2778551535 (OS grid reference) · View on Apple Maps WFD catchment Cong Burn from Twizell Burn to Wear (GB103024077600) 2024 spills / hours 10 / 19 Long-term average 15.5 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 10 hours spilling →	Cong Burn	7	10	down 30%	99%
Horden Dene SSO No 1 Overflow on sewer network EA ID / permit NWL00704 · 255/E/0644 Outlet location NZ4238643364 (OS grid reference) · View on Apple Maps WFD catchment Thorpe Gill to Hordon Burn (GB650301500002) 2024 spills / hours 71 / 37 Long-term average 39.2 spills a year (monitored since 2018) Monitor below 90% Installation set-up/design issue · Resolved - Jun Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 10 hours spilling →	Horden Burn/Thorpe Burn	14	10	down 80%	49%
West Row CSO HP008 Overflow on sewer network EA ID / permit NWL01492 · 254/1810 Outlet location NZ4916127222 (OS grid reference) · View on Apple Maps WFD catchment Greatham Beck Catchment (trib of Tidal Tees) (GB103025076030) 2024 spills / hours 18 / 17 Long-term average 15.5 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 10 hours spilling →	Greatham Beck	12	10	down 33%	95%

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.