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
CSO at Rear of 1 River Terrace Overflow on sewer network EA ID / permit NWL00375 · 25/01/0922 Outlet location NY9487925005 (OS grid reference) · View on Apple Maps WFD catchment Tees from Maize Beck to Percy Beck (GB103025072511) 2024 spills / hours 8 / 4.0 Long-term average 1.3 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 2.3 hours spilling →	River Tees	4	2.3	down 50%	100%
Tedder Avenue SSO Overflow on sewer network EA ID / permit NWL01346 · 254/E/0431 Outlet location NZ4640015800 (OS grid reference) · View on Apple Maps WFD catchment Stainsby Beck Catchment (trib of Tidal Tees) (GB103025072180) 2024 spills / hours 2 / 0.5 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 2.3 hours spilling →	Stainsby Beck	2	2.3	no change	94%
Brus Sewage Pumping Station Storm discharge at pumping station EA ID / permit NWL00213 · 255/5021 Outlet location NZ5050035590 (OS grid reference) · View on Apple Maps WFD catchment Tees Coastal (GB650301500005) 2024 spills / hours 7 / 7.1 Long-term average 18.0 spills a year (monitored since 2019) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 2.2 hours spilling →	North Sea	4	2.2	down 43%	100%
White House Road 1+2 CSO Overflow on sewer network EA ID / permit NWL01514 · 254/1823 Outlet location NZ4515024010 (OS grid reference) · View on Apple Maps WFD catchment Billingham Beck from Brierley Beck to Tees Es (GB103025076010) 2024 spills / hours 3 / 0.8 Long-term average 3.3 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 2.2 hours spilling →	Thorpe Beck, Trib of Bill.Beck	5	2.2	up 67%	100%
Rowlandson Terrace CSO Overflow on sewer network EA ID / permit NWL01130 · 253/1080 Outlet location NZ3042931758 (OS grid reference) · View on Apple Maps WFD catchment Carrs from Source to Skerne (GB103025072520) 2024 spills / hours 9 / 4.8 Long-term average 12.0 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 2.2 hours spilling →	Carrs Tributary	17	2.2	up 89%	98%
Green'S Lane CSO Overflow on sewer network EA ID / permit NWL00623 · 254/E/0361 Outlet location NZ4225718333 (OS grid reference) · View on Apple Maps WFD catchment Lustrum Beck Catchment (trib of Tees) (GB103025072550) 2024 spills / hours 5 / 2.8 Long-term average 5.3 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 2.2 hours spilling →	Green'S Beck	5	2.2	no change	97%
Mountford Road CSO Overflow on sewer network EA ID / permit NWL00913 · 226/1195 Outlet location NZ3071377117 (OS grid reference) · View on Apple Maps WFD catchment Lysdon burn (GB650301500002) 2024 spills / hours 24 / 60 Long-term average 19.5 spills a year (monitored since 2015) Monitor below 90% Comms failure / issue · Resolved - Jun Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 2.2 hours spilling →	Uunamed Trib of Lysdon Burn	4	2.2	down 83%	84%
Thorpe Street SPS Storm discharge at pumping station EA ID / permit NWL01379 · 255/5022 Outlet location NZ5216634794 (OS grid reference) · View on Apple Maps WFD catchment Tees Coastal (GB650301500005) 2024 spills / hours 18 / 47 Long-term average 38.0 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 2.2 hours spilling →	North Sea	2	2.2	down 89%	100%
Vedra Close SSO Overflow on sewer network EA ID / permit NWL01425 · 241/A/0999 Outlet location NY8621039420 (OS grid reference) · View on Apple Maps WFD catchment Wear from Wearhead to Middlehope Burn, Iresho (GB103024077440) 2024 spills / hours 2 / 1.8 Long-term average 1.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 2.1 hours spilling →	Wear	2	2.1	no change	100%
Washington STW Inlet overflow at sewage works Sewage works Washington EA ID / permit NWL01461 · 245/1244 Outlet location NZ3351056000 (OS grid reference) · View on Apple Maps WFD catchment WEAR (GB510302402900) 2024 spills / hours 21 / 26 Long-term average 14.5 spills a year (monitored since 2022) Investigation Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 2.1 hours spilling →	Wear	3	2.1	down 86%	100%
CSO at Manhole 49 Howden Road Overflow on sewer network EA ID / permit NWL00373 · 235/1489 Outlet location NZ3496266848 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 10 / 9.7 Long-term average 7.1 spills a year (monitored since 2018) Monitor below 90% Sensor failure / issue · Resolved - May Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 2.1 hours spilling →	Tyne Estuary	9	2.1	down 10%	58%
Bell Burn Wood CSO WV042 Overflow on sewer network EA ID / permit NWL00113 · 243/E/0097 Outlet location NZ2252131682 (OS grid reference) · View on Apple Maps WFD catchment Wear from Gaunless to Browney (GB103024077464) 2024 spills / hours 5 / 3.5 Long-term average 6.9 spills a year (monitored since 2017) Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 2.1 hours spilling →	Bell Burn	7	2.1	up 40%	100%
Lamport CSO Overflow on sewer network EA ID / permit NWL00771 · 235/1051 Outlet location NZ3026065370 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 12 / 7.0 Long-term average 8.6 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 2.1 hours spilling →	Tyne (Tidal)	10	2.1	down 17%	100%
Gib Chare Housing Development Overflow on sewer network EA ID / permit NWL00586 · 242/C/0372 Outlet location NZ2140029800 (OS grid reference) · View on Apple Maps WFD catchment Gaunless from Hummer Beck to Wear (GB103024072730) 2024 spills / hours 5 / 2.0 Long-term average 9.1 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 2.0 hours spilling →	Gaunless	6	2.0	up 20%	97%
Wear View A CSO SE001 Overflow on sewer network EA ID / permit NWL01469 · 243/0992 Outlet location NZ2208034140 (OS grid reference) · View on Apple Maps WFD catchment Wear from Gaunless to Browney (GB103024077464) 2024 spills / hours 3 / 4.0 Long-term average 6.5 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 2.0 hours spilling →	Strait the	6	2.0	up 100%	100%
High Street CSO Overflow on sewer network EA ID / permit NWL00688 · EPRCB3190WC Outlet location NZ5439206848 (OS grid reference) · View on Apple Maps WFD catchment Wear from Croxdale Beck to Lumley Park Burn (GB103024077621) 2024 spills / hours 2 / 0.5 Long-term average 1.1 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement No improvement action in reporting period Volume & pollution Estimate from 1.9 hours spilling →	Broughton Beck	4	1.9	up 100%	91%
Junc of Clavering Rd & Swalwel Bank Overflow on sewer network EA ID / permit NWL00743 · 234/1143 Outlet location NZ2006362126 (OS grid reference) · View on Apple Maps WFD catchment River Derwent (GB510302310200) 2024 spills / hours 9 / 2.1 Long-term average 9.3 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.9 hours spilling →	Derwent Mill Race	9	1.9	no change	100%
Kimblesworth CSO Overflow on sewer network EA ID / permit NWL00755 · EPRBB3398RS Outlet location NZ2646447467 (OS grid reference) · View on Apple Maps WFD catchment Blackdene Burn to confluence with Wear (GB103024077622) 2024 spills / hours – / – Long-term average 12.0 spills a year (monitored since 2022) 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 1.9 hours spilling →	Blackdene Burn	14	1.9		84%
Point M St James Church CSO Overflow on sewer network EA ID / permit NWL01043 · 225/1073 Outlet location NZ1952086120 (OS grid reference) · View on Apple Maps WFD catchment Wansbeck from Font to Bothal Burn (GB103022077061) 2024 spills / hours 17 / 73 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 1.9 hours spilling →	Cotting Burn	6	1.9	down 65%	96%
Ashington Drive CSO Hlf Moon Rndbwt Overflow on sewer network EA ID / permit NWL00063 · 225/0940 Outlet location NZ2690486086 (OS grid reference) · View on Apple Maps WFD catchment Wansbeck from Bothal Burn to North Sea (GB103022077062) 2024 spills / hours 8 / 12 Long-term average 9.8 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.9 hours spilling →	Wansbeck Estuary	6	1.9	down 25%	100%
Greenford Road Combined Sewer Overflow Overflow on sewer network EA ID / permit NWL00621 · EPRSP3029PH Outlet location NZ2929963167 (OS grid reference) · View on Apple Maps WFD catchment The River Tyne (GB510302310200) 2024 spills / hours 12 / 3.9 Long-term average 4.9 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 1.9 hours spilling →	The River Tyne	7	1.9	down 42%	95%
Woodhouse Lane Library CSO Overflow on sewer network EA ID / permit NWL01546 · EPRBB3093WE Outlet location NZ2101027823 (OS grid reference) · View on Apple Maps WFD catchment Gaunless from Hummer Beck to Wear (GB103024072730) 2024 spills / hours 6 / 3.5 Long-term average 7.0 spills a year (monitored since 2017) Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.9 hours spilling →	River Gaunless	4	1.9	down 33%	100%
Church Villas CSO Overflow on sewer network EA ID / permit NWL00292 · 245/1260 Outlet location NZ3415041150 (OS grid reference) · View on Apple Maps WFD catchment Old Durham Beck from Source to Pittington Beck (GB103024077490) 2024 spills / hours 7 / 16 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 1.9 hours spilling →	Shadforth Beck	4	1.9	down 43%	100%
Lealhome Grove CSO Overflow on sewer network EA ID / permit NWL00784 · 254/1931 Outlet location NZ4179518687 (OS grid reference) · View on Apple Maps WFD catchment Lustrum Beck Catchment (trib of Tees) (GB103025072550) 2024 spills / hours 3 / 1.3 Long-term average 4.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.9 hours spilling →	Hartburn Beck Tributary	6	1.9	up 100%	100%
Potter Street SPS Storm discharge at pumping station EA ID / permit NWL01052 · 235/1688 Outlet location NZ3208766105 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 4 / 16 Long-term average 3.3 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.9 hours spilling →	River Tyne	2	1.9	down 50%	100%
Billingham STW Inlet overflow at sewage works Sewage works Billingham EA ID / permit NWL00130 · 254/1965 Outlet location NZ4846025840 (OS grid reference) · View on Apple Maps WFD catchment Tees (GB510302509900) 2024 spills / hours 1 / 0.1 Long-term average 4.0 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 1.8 hours spilling →	North Sea	3	1.8	up 200%	100%
West View CSO Overflow on sewer network EA ID / permit NWL01496 · 235/1317 Outlet location NZ2257663072 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 8 / 2.4 Long-term average 9.7 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.8 hours spilling →	Tyne Estuary	7	1.8	down 13%	100%
Westfield No 9 PS Overflow on sewer network EA ID / permit NWL01503 · 210/0983 Outlet location NT9962354112 (OS grid reference) · View on Apple Maps WFD catchment North Sea (GB650301440000) 2024 spills / hours 8 / 3.9 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 1.8 hours spilling →	Unnamed Coastal Stream	3	1.8	down 63%	100%
Ash Meadows CSO Chester Le Street Overflow on sewer network EA ID / permit NWL00060 · 245/E/0593 Outlet location NZ2829253005 (OS grid reference) · View on Apple Maps WFD catchment Wear DS of Lumley Park Burn to Tidal Limit (GB103024077624) 2024 spills / hours 28 / 46 Long-term average 47.8 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.8 hours spilling →	Trib. of Wear Estuary	5	1.8	down 82%	99%
Castleside Overflow on sewer network EA ID / permit NWL00255 · 234/1105 Outlet location NZ0886049980 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 6 / 2.8 Long-term average 8.1 spills a year (monitored since 2014) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 1.8 hours spilling →	Dene Burn (River Derwent)	8	1.8	up 33%	100%
Percy Main CSO Overflow on sewer network EA ID / permit NWL01027 · 235/1900 Outlet location NZ3499167106 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 10 / 17 Long-term average 7.9 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.7 hours spilling →	Tyne Estuary	5	1.7	down 50%	99%
Ravenscroft Ave CSO Overflow on sewer network EA ID / permit NWL01085 · 254/1922 Outlet location NZ4952017770 (OS grid reference) · View on Apple Maps WFD catchment Marton West Beck Catchment (trib of Tidal Tees) (GB103025072210) 2024 spills / hours 0 / 0.0 Long-term average 2.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.7 hours spilling →	Marton West Beck	2	1.7	up from 0	99%
Shildon CSO West Road Auckland Overflow on sewer network EA ID / permit NWL01193 · EPRAB3691WJ Outlet location NZ2268726227 (OS grid reference) · View on Apple Maps WFD catchment Woodham Burn from Source to Rushyford beck (GB103025072400) 2024 spills / hours 1 / 0.3 Long-term average 2.4 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 1.7 hours spilling →	Trib of the Woodham Burn	4	1.7	up 300%	90%
Storey Park CSO Overflow on sewer network EA ID / permit NWL01317 · 225/1077 Outlet location NZ1978085200 (OS grid reference) · View on Apple Maps WFD catchment Wansbeck from Font to Bothal Burn (GB103022077061) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2017) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.7 hours spilling →	Church Burn	4	1.7	up from 0	99%
Broken Blackwell Scar PS Storm discharge at pumping station EA ID / permit NWL00149 · 252/1015 Outlet location NZ2591813725 (OS grid reference) · View on Apple Maps WFD catchment Tees from River Greta to River Skerne (GB103025072190) 2024 spills / hours 0 / 0.0 Long-term average 1.2 spills a year (monitored since 2020) Monitor below 90% Power failure / issue · Resolved - January after reporting year Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 1.7 hours spilling →	River Tees	2	1.7	up from 0	88%
Crawcrook Lane CSO Overflow on sewer network EA ID / permit NWL00344 · 233/1258 Outlet location NZ1305265097 (OS grid reference) · View on Apple Maps WFD catchment River Tyne (GB510302310200) 2024 spills / hours 5 / 1.6 Long-term average 13.3 spills a year (monitored since 2023) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.7 hours spilling →	Tyne	6	1.7	up 20%	100%
Bridge End Cottages CSO Overflow on sewer network EA ID / permit NWL00195 · 233/1244 Outlet location NY9889964240 (OS grid reference) · View on Apple Maps WFD catchment Tyne from Watersmeet to Tidal Limit (GB103023075801) 2024 spills / hours 12 / 8.3 Long-term average 10.2 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.6 hours spilling →	River Tyne	9	1.6	down 25%	97%
Chopwell Road CSO Overflow on sewer network EA ID / permit NWL00281 · 234/1139 Outlet location NZ1215656843 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 14 / 29 Long-term average 14.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 1.6 hours spilling →	River Derwent	5	1.6	down 64%	93%
South of Rookwood CSO Nty 003 Overflow on sewer network EA ID / permit NWL01232 · 226/1268 Outlet location NZ2447873434 (OS grid reference) · View on Apple Maps WFD catchment Browney from Smallhope Burn Deerness confl (GB103024077551) 2024 spills / hours 14 / 17 Long-term average 8.9 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.6 hours spilling →	Seaton Burn	7	1.6	down 50%	100%
Attwood Terrace CSO SE008 Overflow on sewer network EA ID / permit NWL00068 · 243/1002 Outlet location NZ2654535606 (OS grid reference) · View on Apple Maps WFD catchment Wear from Gaunless to Browney (GB103024077464) 2024 spills / hours 6 / 4.0 Long-term average 7.3 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.6 hours spilling →	Nicky Nack Beck	8	1.6	up 33%	98%
Bothal CSO the Tunnels CM036 Overflow on sewer network EA ID / permit NWL00173 · 225/1068 Outlet location NZ2331387574 (OS grid reference) · View on Apple Maps WFD catchment Bothal Burn Catchment (trib of Wansbeck) (GB103022077030) 2024 spills / hours 14 / 29 Long-term average 14.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.6 hours spilling →	Bothal Burn	5	1.6	down 64%	99%
Moorside CSO DER002 Overflow on sewer network EA ID / permit NWL00904 · 234/1106 Outlet location NZ0902849791 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 6 / 5.5 Long-term average 4.0 spills a year (monitored since 2018) Monitor below 90% Comms failure / issue · Resolved - Apr Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 1.6 hours spilling →	Dene Burn (River Derwent)	4	1.6	down 33%	73%
Addison Village CSO Unit 3 Overflow on sewer network EA ID / permit NWL00026 · 233/1023 Outlet location NZ1697664214 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 11 / 7.8 Long-term average 8.3 spills a year (monitored since 2018) Monitor below 90% Comms failure / issue · Resolved - Dec Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.6 hours spilling →	Tyne	4	1.6	down 64%	88%
Cone Lane (Chester No 4) CSO Overflow on sewer network EA ID / permit NWL00311 · 245/1328 Outlet location NZ2744951601 (OS grid reference) · View on Apple Maps WFD catchment Cong Burn from Twizell Burn to Wear (GB103024077600) 2024 spills / hours 4 / 1.5 Long-term average 8.0 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.6 hours spilling →	Chester Burn	7	1.6	up 75%	100%
Durham Road Ref No 36 Overflow on sewer network EA ID / permit NWL00469 · 234/1152 Outlet location NZ1002151801 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 9 / 4.8 Long-term average 5.9 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 1.6 hours spilling →	Tinkerhill Gill, Tributary of	11	1.6	up 22%	99%
Harton Low Staithes (Mill Dam) CSO Overflow on sewer network EA ID / permit NWL00650 · 235/1907 Outlet location NZ3584066910 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 2 / 5.3 Long-term average 2.4 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 1.6 hours spilling →	Tyne Saline Estuary	1	1.6	down 50%	100%
29 First Row Overflow on sewer network EA ID / permit NWL00005 · 224/0969 Outlet location NZ2646891153 (OS grid reference) · View on Apple Maps WFD catchment Lyne from Source to Tidal Limit (GB103022076820) 2024 spills / hours 6 / 5.0 Long-term average 6.0 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 1.5 hours spilling →	Potland Burn (Trib of R.Lyne)	4	1.5	down 33%	100%
Shoregate CSO Overflow on sewer network EA ID / permit NWL01198 · 210/1347 Outlet location NT9979752582 (OS grid reference) · View on Apple Maps WFD catchment TWEED (GB510202110000) Bathing water Spittal 2024 spills / hours 15 / 23 Long-term average 7.5 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 1.5 hours spilling →	River Tweed (Saline Estuary)	2	1.5	down 87%	100%
Brenda Road/Park View CSO Overflow on sewer network EA ID / permit NWL00190 · 25/05/5033 Outlet location NZ5100930078 (OS grid reference) · View on Apple Maps WFD catchment Tees Coastal (GB650301500005) Bathing water Seaton Carew Centre 2024 spills / hours 2 / 0.4 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 1.5 hours spilling →	The Stell	3	1.5	up 50%	100%
Dean Street (High Level) CSO Overflow on sewer network EA ID / permit NWL00425 · 235/1921 Outlet location NZ2525963811 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 6 / 12 Long-term average 1.8 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 1.5 hours spilling →	River Tyne	2	1.5	down 67%	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.