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
Finings Avenue SPS Storm discharge at pumping station EA ID / permit NWL00777 · 244/A/0528 Outlet location NZ2041445080 (OS grid reference) · View on Apple Maps WFD catchment Browney from Smallhope Burn Deerness confl (GB103024077551) 2024 spills / hours 16 / 69 Long-term average 19.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 46 hours spilling →	River Browney	9	46	down 44%	100%
Victoria Embankment - Polam Lane Overflow on sewer network EA ID / permit NWL01427 · 25/03/1231 Outlet location NZ2884413754 (OS grid reference) · View on Apple Maps WFD catchment Skerne from Demons Beck to Tees (GB103025072596) 2024 spills / hours 18 / 84 Long-term average 12.6 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 45 hours spilling →	River Skerne	11	45	down 39%	99%
East Hartford PS Storm discharge at pumping station EA ID / permit NWL00481 · 226/1089 Outlet location NZ2713879285 (OS grid reference) · View on Apple Maps WFD catchment Blyth from Pont to Tidal Limit (GB103022077052) 2024 spills / hours 33 / 238 Long-term average 24.7 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 45 hours spilling →	Horton Burn (River Blyth)	12	45	down 64%	92%
Wood Grove CSO (NC029) Overflow on sewer network EA ID / permit NWL01541 · 235/1939 Outlet location NZ1965463974 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 55 / 87 Long-term average 54.6 spills a year (monitored since 2013) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 45 hours spilling →	River Tyne Estuary	38	45	down 31%	100%
Salters Lane CSO Overflow on sewer network EA ID / permit NWL01140 · 235/1895 Outlet location NZ2560468471 (OS grid reference) · View on Apple Maps WFD catchment Ouse Burn from Source to Tyne (GB103023075780) 2024 spills / hours 42 / 383 Long-term average 34.6 spills a year (monitored since 2019) Monitor below 90% Telemetry or data archiving failure / issue · Resolved - Jul Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 44 hours spilling →	Ouse Burn	5	44	down 88%	80%
Stockton Road CSO (Se 024) Overflow on sewer network EA ID / permit NWL01308 · 254/1820 Outlet location NZ3624028116 (OS grid reference) · View on Apple Maps WFD catchment Billingham Beck from Source to Bishopton Beck (GB103025072410) 2024 spills / hours 34 / 71 Long-term average 21.3 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 44 hours spilling →	Shotton Beck	28	44	down 18%	100%
Winston STW Inlet overflow at sewage works Sewage works Winston EA ID / permit NWL01536 · 25/02/1120 Outlet location NZ1436316565 (OS grid reference) · View on Apple Maps WFD catchment Tees from River Greta to River Skerne (GB103025072190) 2024 spills / hours 5 / 0.6 Long-term average 6.5 spills a year (monitored since 2013) 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 44 hours spilling →	River Tees	45	44	up 800%	98%
Throstles Nest Storage Tank Overflow on sewer network EA ID / permit NWL01384 · 255/1192 Outlet location NZ3945039900 (OS grid reference) · View on Apple Maps WFD catchment Castle Eden Burn from Source to North Sea (GB103025075930) 2024 spills / hours 13 / 74 Long-term average 5.2 spills a year (monitored since 2015) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 44 hours spilling →	Gore Burn	8	44	down 38%	100%
Bleach Green Farm CSO Overflow on sewer network EA ID / permit NWL00159 · 244/0999 Outlet location NZ2369041750 (OS grid reference) · View on Apple Maps WFD catchment Deerness from Hedleyhope Burn to Browney (GB103024077280) 2024 spills / hours 14 / 36 Long-term average 14.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 44 hours spilling →	River Deerness	22	44	up 57%	96%
Teesbank Avenue CSO Overflow on sewer network EA ID / permit NWL01348 · 254/0663 Outlet location NZ4286715217 (OS grid reference) · View on Apple Maps WFD catchment Tees from Skerne to Tidal Limit (GB103025072595) 2024 spills / hours 37 / 80 Long-term average 35.6 spills a year (monitored since 2013) Investigation Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 44 hours spilling →	Tees	15	44	down 59%	100%
Acomb Pumping Station Storm discharge at pumping station EA ID / permit NWL00024 · 233/1041 Outlet location NY9306665445 (OS grid reference) · View on Apple Maps WFD catchment Red Burn (Trib of Tyne) (GB103023075730) 2024 spills / hours 33 / 91 Long-term average 31.2 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 43 hours spilling →	Birkley Burn (River Tyne)	22	43	down 33%	100%
Pont Lane A CSO Overflow on sewer network EA ID / permit NWL01047 · 234/1054 Outlet location NZ1250652428 (OS grid reference) · View on Apple Maps WFD catchment Pont Burn Catchment (trib of Derwent) (GB103023074780) 2024 spills / hours 36 / 207 Long-term average 17.9 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 43 hours spilling →	Pont Burn	12	43	down 67%	95%
Pottery Lane PS Storm discharge at pumping station EA ID / permit NWL01053 · 245/1171 Outlet location NZ3538257268 (OS grid reference) · View on Apple Maps WFD catchment WEAR (GB510302402900) 2024 spills / hours 18 / 82 Long-term average 13.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement completed Volume & pollution Estimate from 43 hours spilling →	River Wear	9	43	down 50%	100%
Whitburn Steel PS Storm discharge at pumping station EA ID / permit NWL01512 · 245/1207 Outlet location NZ4206061150 (OS grid reference) · View on Apple Maps WFD catchment Tyne and Wear (GB650301500002) Bathing water Seaburn - Sunderland 2024 spills / hours 32 / 124 Long-term average 23.8 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 42 hours spilling →	North Sea	12	42	down 63%	100%
South Shields Pilot SPS Storm discharge at pumping station EA ID / permit NWL01032 · 235/0076 Outlet location NZ3663068239 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) Bathing water Littlehaven Beach 2024 spills / hours 33 / 128 Long-term average 20.8 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 42 hours spilling →	River Tyne (Tidal)	14	42	down 58%	100%
Pennine View CSO Overflow on sewer network EA ID / permit NWL01026 · 234/1161 Outlet location NZ1173457950 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 26 / 100 Long-term average 20.8 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 42 hours spilling →	Tributary of River Derwent	11	42	down 58%	100%
Grove Terrace CSO DU005 Overflow on sewer network EA ID / permit NWL00629 · 244/1007 Outlet location NZ2555040913 (OS grid reference) · View on Apple Maps WFD catchment Browney from Deerness confl to Wear (GB103024077552) 2024 spills / hours 37 / 59 Long-term average 34.6 spills a year (monitored since 2013) 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 42 hours spilling →	River Browney	38	42	up 3%	92%
Swarland House SPS Storm discharge at pumping station EA ID / permit NWL01335 · 223/0864 Outlet location NU2618504546 (OS grid reference) · View on Apple Maps WFD catchment COQUET (GB510302203000) Bathing water Warkworth; Amble Links 2024 spills / hours 13 / 67 Long-term average 6.6 spills a year (monitored since 2018) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 42 hours spilling →	Guilders Burn	8	42	down 38%	100%
Langley Beck CSO Overflow on sewer network EA ID / permit NWL00776 · 25/03/1251 Outlet location NZ3780735531 (OS grid reference) · View on Apple Maps WFD catchment Skerne from Source to Carrs (GB103025076070) 2024 spills / hours 41 / 119 Long-term average 38.1 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 42 hours spilling →	Langley Beck	26	42	down 37%	92%
Main Street CSO Overflow on sewer network EA ID / permit NWL00837 · 210/1291 Outlet location NT8569039070 (OS grid reference) · View on Apple Maps WFD catchment Coquet from Forest Burn to Tidal Limit (GB103022076693) 2024 spills / hours 27 / 37 Long-term average 26.4 spills a year (monitored since 2013) 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 42 hours spilling →	Duddo Burn, Tributary of	38	42	up 41%	97%
Magdalene Fields North CSO Overflow on sewer network EA ID / permit NWL00835 · 210/1355 Outlet location NU0009954653,NU0010954736&NU0011454649 (OS grid reference) · View on Apple Maps WFD catchment Northumberland North (GB650301440000) 2024 spills / hours 51 / 70 Long-term average 50.8 spills a year (monitored since 2015) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 42 hours spilling →	North Sea	46	42	down 10%	99%
Woodlands SPS Storm discharge at pumping station EA ID / permit NWL01548 · 233/1065 Outlet location NY9493663938 (OS grid reference) · View on Apple Maps WFD catchment Tyne from Watersmeet to Tidal Limit (GB103023075801) 2024 spills / hours 23 / 105 Long-term average 22.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 42 hours spilling →	Trib of the River Tyne	17	42	down 26%	91%
The Hollows CSO WV49 Overflow on sewer network EA ID / permit NWL01363 · 241/1108 Outlet location NZ1631533963 (OS grid reference) · View on Apple Maps WFD catchment Beechburn Beck (Trib of Wear) (GB103024077390) 2024 spills / hours 29 / 82 Long-term average 26.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 42 hours spilling →	Beechburn Beck	24	42	down 17%	100%
Mayfield Ave CSO NC034 Overflow on sewer network EA ID / permit NWL00860 · 233/1268 Outlet location NZ1635666370 (OS grid reference) · View on Apple Maps WFD catchment New Burn (Trib of Tyne) (GB103023075740) 2024 spills / hours 35 / 72 Long-term average 29.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 42 hours spilling →	New Burn	20	42	down 43%	100%
Bradbury STW Inlet overflow at sewage works Sewage works Bradbury EA ID / permit NWL00182 · 253/1277 Outlet location NZ3194628489 (OS grid reference) · View on Apple Maps WFD catchment Skerne from Carrs to Woodham Burn (GB103025072430) 2024 spills / hours 20 / 65 Long-term average 20.8 spills a year (monitored since 2020) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 41 hours spilling →	River Skerne	11	41	down 45%	100%
Bedside CSO Overflow on sewer network EA ID / permit NWL00104 · 226/1206 Outlet location NZ2818082260 (OS grid reference) · View on Apple Maps WFD catchment BLYTH (N) (GB510302203200) 2024 spills / hours 37 / 134 Long-term average 28.7 spills a year (monitored since 2013) Investigation Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 41 hours spilling →	Blyth	11	41	down 70%	100%
Longhirst STW Storm tank at sewage works Sewage works Longhirst EA ID / permit NWL00809 · 225/0351 Outlet location NZ2253788752 (OS grid reference) · View on Apple Maps WFD catchment Bothal Burn Catchment (trib of Wansbeck) (GB103022077030) 2024 spills / hours 29 / 175 Long-term average 22.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 41 hours spilling →	Longhirst Burn	16	41	down 45%	100%
West Woodburn CSO Overflow on sewer network EA ID / permit NWL01497 · 255/1186 Outlet location NZ3949636123 (OS grid reference) · View on Apple Maps WFD catchment Crimdon Beck from Source to Sea (GB103025075910) 2024 spills / hours 19 / 76 Long-term average 12.2 spills a year (monitored since 2015) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 41 hours spilling →	Trib. of Heads Hope Burn	16	41	down 16%	100%
Philipburn Dene PS Storm discharge at pumping station EA ID / permit NWL01031 · 232/A/1011 Outlet location NY8402056203 (OS grid reference) · View on Apple Maps WFD catchment Allen from Source to West Allen (GB103023074710) 2024 spills / hours 25 / 64 Long-term average 18.0 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 41 hours spilling →	Philip Burn	11	41	down 56%	95%
Old Tyne Bridge CSO Overflow on sewer network EA ID / permit NWL00980 · 232/1166 Outlet location NY7056663780 (OS grid reference) · View on Apple Maps WFD catchment South Tyne from Tipalt Burn to Allen (GB103023075532) 2024 spills / hours 50 / 46 Long-term average 48.2 spills a year (monitored since 2013) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 41 hours spilling →	River South Tyne	44	41	down 12%	100%
Briardale Road CSO Overflow on sewer network Company site name TAYLOR STREET CSO EA ID / permit NWL00193 · 226/1050 Outlet location NZ2906281980 (OS grid reference) · View on Apple Maps WFD catchment BLYTH (N) (GB510302203200) 2024 spills / hours 42 / 158 Long-term average 40.7 spills a year (monitored since 2013) Investigation Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 40 hours spilling →	Blyth Estuary	25	40	down 40%	94%
CSO Adjacent 40 Hollyhill Gardens Overflow on sewer network EA ID / permit NWL00363 · 245/1258 Outlet location NZ1995851833 (OS grid reference) · View on Apple Maps WFD catchment Twizell Burn from Source to Cong Burn (GB103024077590) 2024 spills / hours 40 / 75 Long-term average 36.4 spills a year (monitored since 2013) High-spill reason (company) Not asset maintenance - Hydraulic capacity Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 40 hours spilling →	Trib of Stanley Burn	34	40	down 15%	100%
Grange Mill Combined Sewer Overflow Overflow on sewer network EA ID / permit NWL00601 · EPRMP3729PA Outlet location NZ5521210177 (OS grid reference) · View on Apple Maps WFD catchment River Leven (GB103025071890) 2024 spills / hours 21 / 88 Long-term average 14.4 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 40 hours spilling →	River Leven	19	40	down 10%	100%
Beaumont Hill SSO Overflow on sewer network EA ID / permit NWL00102 · 25/03/1248 Outlet location NZ2936018180 (OS grid reference) · View on Apple Maps WFD catchment Skerne from Demons Beck to Tees (GB103025072596) 2024 spills / hours 22 / 49 Long-term average 11.7 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement completed Volume & pollution Estimate from 39 hours spilling →	Unnamed Trib of Skerne	21	39	down 5%	97%
CSO at Green Lane Overflow on sewer network EA ID / permit NWL00371 · 254/1174 Outlet location NZ4481816925 (OS grid reference) · View on Apple Maps WFD catchment Tees from Skerne to Tidal Limit (GB103025072595) 2024 spills / hours 27 / 29 Long-term average 36.0 spills a year (monitored since 2013) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 39 hours spilling →	Tees	23	39	down 15%	95%
Ouston Villa Farm CSO Overflow on sewer network EA ID / permit NWL00991 · 235/1878 Outlet location NZ2648053780 (OS grid reference) · View on Apple Maps WFD catchment Team from Source to Tyne (GB103023075670) 2024 spills / hours 25 / 107 Long-term average 12.5 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 39 hours spilling →	Rowletch Burn 9RIVER Team)	6	39	down 76%	100%
Green Bridge CSO (Der 137) Overflow on sewer network EA ID / permit NWL00618 · 234/1110 Outlet location NZ0907453027 (OS grid reference) · View on Apple Maps WFD catchment Derwent from Burnhope Burn to River Tyne (GB103023074790) 2024 spills / hours 26 / 152 Long-term average 22.1 spills a year (monitored since 2018) Investigation Env Act (SODRP) investigation ongoing, Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 39 hours spilling →	Derwent	13	39	down 50%	100%
Fish Quay CSO Overflow on sewer network EA ID / permit NWL00557 · 235/1914 Outlet location NZ3642068490 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) Bathing water Littlehaven Beach 2024 spills / hours 28 / 134 Long-term average 21.5 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing, Operational investigation completed Improvement Operational improvement ongoing Volume & pollution Estimate from 39 hours spilling →	Tyne Estuary	15	39	down 46%	100%
Esh Winning CSO Point A2 Overflow on sewer network EA ID / permit NWL00521 · 244/E/0307 Outlet location NZ1754140406 (OS grid reference) · View on Apple Maps WFD catchment Deerness from Source to Hedleyhope Burn (GB103024077270) 2024 spills / hours 21 / 84 Long-term average 20.5 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 39 hours spilling →	Deerness	16	39	down 24%	90%
Point Pleasant Pumping Station Storm discharge at pumping station EA ID / permit NWL01044 · 235/1691 Outlet location NZ3158466077 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 25 / 57 Long-term average 13.5 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 39 hours spilling →	River Tyne, North Sea	16	39	down 36%	100%
Barningham STW Inlet overflow at sewage works Sewage works Barningham EA ID / permit NWL00090 · 252/0364 Outlet location NZ0864310923 (OS grid reference) · View on Apple Maps WFD catchment Aldbrough Beck from Source to Clow Beck (GB103025072150) 2024 spills / hours 20 / 68 Long-term average 13.0 spills a year (monitored since 2021) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 39 hours spilling →	Nor Beck	10	39	down 50%	100%
Neasham Road Pumping Station Storm discharge at pumping station EA ID / permit NWL00921 · 254/1017 Outlet location NZ3133110087 (OS grid reference) · View on Apple Maps WFD catchment Tees from Skerne to Tidal Limit (GB103025072595) 2024 spills / hours 19 / 53 Long-term average 19.2 spills a year (monitored since 2013) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 39 hours spilling →	Tees	17	39	down 11%	100%
Port Clarence West P.Stn Storm discharge at pumping station EA ID / permit NWL01049 · QR.25/04/1542 Outlet location NZ4940821638 (OS grid reference) · View on Apple Maps WFD catchment TEES (GB510302509900) 2024 spills / hours 4 / 11 Long-term average 6.8 spills a year (monitored since 2020) Investigation Operational investigation ongoing Improvement Operational improvement ongoing Volume & pollution Estimate from 39 hours spilling →	River Tees	7	39	up 75%	100%
Low Heworth Lane Pumping Station Overflow on sewer network EA ID / permit NWL00815 · 235/1750 Outlet location NZ2868062710 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 38 / 128 Long-term average 25.2 spills a year (monitored since 2015) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 39 hours spilling →	River Tyne Saline Estuary	17	39	down 55%	96%
Black Horse CSO Overflow on sewer network EA ID / permit NWL00142 · 243/1012 Outlet location NZ3232034950 (OS grid reference) · View on Apple Maps WFD catchment Croxdale Beck from Source to Wear (GB103024077410) 2024 spills / hours 26 / 67 Long-term average 23.2 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 38 hours spilling →	Coxhoe Beck	17	38	down 35%	100%
East End CSO Overflow on sewer network EA ID / permit NWL00477 · 241/1092 Outlet location NZ0779937205 (OS grid reference) · View on Apple Maps WFD catchment Waskerley Beck from Source to Wear (GB103024077520) 2024 spills / hours 31 / 45 Long-term average 32.6 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 38 hours spilling →	Waskerley Beck (River Wear)	29	38	down 6%	98%
Aislaby Quay SPS Storm discharge at pumping station EA ID / permit NWL00028 · 254/1928 Outlet location NZ4071712229&NZ4071412228 (OS grid reference) · View on Apple Maps WFD catchment Tees from Skerne to Tidal Limit (GB103025072595) 2024 spills / hours 16 / 138 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 38 hours spilling →	River Tees	4	38	down 75%	94%
Church Bank CSO Overflow on sewer network EA ID / permit NWL00284 · 235/1777 Outlet location NZ3115466912 (OS grid reference) · View on Apple Maps WFD catchment Wallsend Burn (Trib of Tyne) (GB103023075760) 2024 spills / hours 53 / 135 Long-term average 32.3 spills a year (monitored since 2020) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 38 hours spilling →	Wallsend Burn Saline Estuary	26	38	down 51%	99%
Lime Street/Cut Bank (2) Overflow on sewer network EA ID / permit NWL00792 · 235/1957 Outlet location NZ2633564341 (OS grid reference) · View on Apple Maps WFD catchment TYNE (GB510302310200) 2024 spills / hours 35 / 85 Long-term average 44.9 spills a year (monitored since 2013) Investigation Env Act (SODRP) investigation ongoing Improvement No improvement action in reporting period Volume & pollution Estimate from 38 hours spilling →	Ouse Burn Estuary	15	38	down 57%	95%
Broomley STW CSO Inlet overflow at sewage works Sewage works Broomley EA ID / permit NWL01587 · Unpermitted Outlet location NZ0420560329 (OS grid reference) · View on Apple Maps WFD catchment Tyne from Watersmeet to Tidal Limit (GB103023075801) 2024 spills / hours – / – Long-term average 4.0 spills a year (monitored since 2025) Investigation No investigation activity in reporting period Improvement No improvement action in reporting period Volume & pollution Estimate from 38 hours spilling →	Smithy Burn	4	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.